Method of controlled observance of gap between upper covering and coal face in mining faces

FIELD: mining.

SUBSTANCE: invention refers to mining industry and namely to control method of powered shield support. Method of controlled observance of a gap, preferably considering mine rock mechanics, between upper covering and coal face in mining faces is performed in the following way: during excavation of bituminous coal by means of underground method using slope sensors arranged at least on three of four main elements of each section of powered shield support there determined is slope of supporting covering and support slide in the cavity direction. On the basis of the measurement data, when changes in slope angle of supporting covering appear, influences on the gap between upper covering and coal face are determined in the calculation unit. Then, operating cycle of section of powered shield support, which includes unloading, supply and bracing, is controlled automatically to define an optimum gap between covering and coal face. Besides, slope sensors can be installed on support slide, goaf shield, load-carrying hinged cantilevers and in goaf area of supporting covering.

EFFECT: method allows monitoring and adjusting the gap between covering and coal face at advancing of extraction front; at that, hazard risk of formation roof destruction is minimised.

18 cl, 10 dwg

 

The invention relates to method control treatment faces, equipped with downhole conveyor, at least one cleaning machine, and a hydraulic shield mechanized support, the development of coal by underground methods.

One of the problems with automation control stope is controlling the gap between the upper ceiling and the coal face, briefly referred to as Paws" ("How"). The typical development of coal by underground methods after exposure of the surface of the roof strive as soon as possible to prop up the roof using the appropriate lining in order to reduce associated with the mechanics of rocks danger of collapse of the roof is not strengthened by the support region. In connection with the production process when working stope in current love inevitably arise in the field without strengthening of the roof lining. For example, during the recess of the method of cutting by means of the Shearer drum-the Executive body of the upper overlapping shield of powered roof supports from a face should have such a backlash from the coal face to ensure Oistamo the harvester forward without colliding with the shield. After the cutting drum, the speaker generally forward in the direction of advancement of the Shearer with Baraba is owned by the Executive body, cuts the top layer of the reservoir and raises the roof, the promotion of mechanized shield lining after leading his treatment combine with drum Executive body is possible only at a certain distance, so that the fastening of the roof using mechanized shield lining not made. Thus, installed, depending on the mode of operation when working stope the gap between the bottom end of the supporting slabs and coal face (Peos), then there is a free span roof layer between the coal face and the residual consisting of a control room mechanized lining, substantially increases the risk of collapse of the roof. With each collapse can cause damage to the production process, especially when the planned automation of dredging and construction of supports.

Therefore, the objective of the invention is to develop a method of the aforementioned type, which allows to control and regulate the gap between the ceiling and the coal face (Peos) when advancing front of wastewater treatment works with minimizing the danger of collapse of the roof of the reservoir.

The solution to this problem, including the predominant structural form of implementation and improvements of the invention are reflected in the content of the claims, which are given after the description.

Osnovnaya invention provides, for controlled compliance preferred considering the mechanics of rocks of the gap between the upper ceiling and the coal face by placing at least three of the four main elements of each partition panel powered roof supports, i.e. on the support skid, goaf shield bearing swivel consoles and landslide areas support the ceiling, sensor slope determine the slope of the supporting girders and supporting the runner in the direction of the grooves, on the basis of the measurement data with emerging changes of angle supports overlap in the computing unit determines the appropriate gap between the upper ceiling and the coal face, and automatically control the duty cycle of the shield section of powered roof supports, consisting of unloading, supply and disposal, so that to establish the optimal gap between the ceiling and the coal face.

An advantage of the invention is that only on the basis associated with a relatively small cost for determining the angle of inclination of the individual sections of the shield of powered roof supports in the direction of the notches can first assess the appropriate clearance between the ceiling and the coal face, and then in each case in the data block is in automatic mode to regulate worker C is CL the corresponding section of the shield of powered roof supports during development or promotion so in order to calibrate the optimum gap between the ceiling and the coal face on the basis of the existing framework conditions.

According to one example of structural embodiment of the invention provides the possibility in addition to measuring the angle of the slope in the direction of the grooves by means of sensors slope determine the slope of the individual sections of the shield of powered roof supports in the transverse to the notch direction and compare it with the transverse slope of the adjacent shield sections of powered roof supports, and if it exceeds one of the set as valid parameters to produce during a working cycle, the alignment of the corresponding section of the shield of powered roof supports relative to the adjacent supports. This should ensure that the slope of the adjacent shield sections of powered roof supports is not too different from the slope of the AFC, so that in automatic mode the adjacent partition panel mechanical supports are not disconnected from each other. In the case of registered unacceptable deviation, if detected, the corresponding critical situation of combining work cycle in the promotion section of the shield of powered roof supports can be automatically adapted or interrupted in order to allow korrektsiooni this section shield of powered roof supports. When this undesirable distortions of the shield section of powered roof supports lead primarily to increase Pews, so this measure also allows you to achieve the minimum possible Pews.

Because now adjustable on a separate modes of operation Pews is dependent on the pillows of the roof section of the shield of powered roof supports, education for supporting the overlapping breed pillows leads to the fact that the roof can no longer accumulate on the bottom front part of the upper floors, and sandwiches, primarily breed cushion formed, as a rule, in the rear part of the upper floor. For this reason, it is necessary to prevent the formation of this breed pillows. To do this in one of the examples of constructive solutions of the invention provides that during each operating cycle of the shield section of powered roof supports, the upper ceiling is set in such a way as to ensure the slope of the top of canopies from its bottom end to the side edge of the side dam. In this downward position of the upper overlap formed rock pillow is removed at each step section of the shield of powered roof supports. Thus control of the position of the upper overlap in each case can be done by using located in the shield section of mekhanizirovn the th lining corner jacks, these corner jacks are located between the upper ceiling and goaf shield lining that allows you to adjust the upper ceiling lining.

According to one example of structural embodiment of the invention installed in the desired position of the shield section of powered roof supports may also contribute to the fact that during each operating cycle section mechanized shield lining the slope of the base of the shields is set by the rising relative to the AFC, as well as the upward position of the base of the lining in the direction of the grooves makes it easy sliding up the bulk of the ore, which can be formed on the bottom layer. Such sliding can be achieved on the basis of the obtained through sensors slope information about the position of the shield of powered roof supports by means of known lifting device on the shield section of powered roof supports.

In the case of collapse of the roof of the aquifer in the area located in front of the bottom part of the upper canopies, there is a danger that the bottom end of the upper overlap will penetrate into the region of emission of the breed; in this case, such a position of the upper overlap is fixed on the basis of what happened between the two working cycles of the bias support the ceiling, assuming that the direction of the roof etc is sinking horizon was generally straightforward. In the case of slope support the ceiling in the direction of collapse of the bottom end of the upper may overlap with the next work cycle to be stuck in the collapse and, thus, prevent further advancement of the lining or even increase the caving. According to one example of structural embodiment of the invention in order to prevent this effect, provided that the detection occurred between the two working cycles of the bias support the ceiling in the direction of the notches when the next work cycle is set to such a pitch of upper floors, which corresponds to the position of the upper overlap during the previous operating cycle. The same method is used and if after the strike hit the rocks in the rear part of the support overlapping with the side of the dam is deflected in the direction of collapse, which leads to distortion of the upper overlap relative to the conveyor. In this case, the top cover of the shield should be installed with a given slope.

This may be provided for registering the height of the extension supporting the upper ceiling racks section of the shield of powered roof supports and provides for the current level of the upper canopies relative to the base of the shields in a separate operating cycles for ODA is dividing the appropriate position of the upper canopies.

Automation works on erection of supports is exacerbated in cases when the shield section of powered roof supports are equipped with a control system to guarantee the initial thrust. This management system to guarantee the initial thrust automatically provides the thrust racks section of the shield of powered roof supports until the working pressure of the uprights of the shields, holding the top of the ceiling to the roof of the reservoir, will not reach, for example, level of 300 bar. If emissions ore or areas of subsidence of the roof of the reservoir that causes the control system to guarantee the initial thrust automatically secures the top cover of the shield until then, until it reaches the corresponding robust level of resistance. The excavation of areas ejection ore it almost inevitably leads to distortions of the supporting beams. To prevent this, according to the example of structural embodiment of the invention provides for automatic interruption of the process of spreading shield of powered roof supports in case the tilt sensor, the upper canopies will fix the correct position of the upper canopies compared with its position during the previous operating cycle. In addition, according to one example to nstructing execution of the invention can be provided, that the control system with the guarantee of the initial thrust in the shield section of powered roof supports at the end of the working cycle is automatically deactivated and re-activated for the subsequent operating cycle. These measures help to avoid incorrect provisions of section mechanized shield lining associated with automatic thrust.

According to one example of structural embodiment of the invention, in order to control the position of the individual sections of the shield of powered roof supports relative to the AFC and moves through a downhole pipe cleaning machine, provided that the step hydraulic cylinder shifting lining providing the pulling section mechanized shield lining to the face conveyor, is registered by the measuring device path.

As for preventing collisions at promoting cleaning of the machine past the shield sections of powered roof supports sets the corresponding dependent on the technical performance of downhole equipment, the gap between the upper ceiling and the coal face (Peos), change this Peus always happens in the moment, especially with the passage of the recess or passage through a saddle, changes the angle of inclination of the face conveyor and cleaning machines Rel the relative inclination angle a separate section of the shield of powered roof supports. In order to detect such changes and to compensate for them by taking appropriate measures to control, according to one example of structural embodiment of the invention provides that on the face conveyor and/or cleaning the machine are mounted respectively on one tilt sensor, and determines the angle of inclination of the face conveyor and/or cleaning of the machine in the direction of the grooves. To do this, simply install the sensor bias on the treatment machine. Despite the fact that moving across the face conveyer and being led by him, the treatment machine to a certain degree form with the face conveyer whole, to improve the control accuracy may be appropriate to monitor and slope AFC installed by it of sensor bias. In some cases, the tilt sensor can be mounted on the face conveyor for the sole purpose of control.

In this regard, provided that when installed deviations in the angles of inclination of the face conveyor and cleaning machines, on the one hand, and the shield section of powered roof supports, on the other hand, is determined by the angle of misalignment between the bearing surface of the AFC and the shield section of powered roof supports. The angle between the displays, are the AFC and cleansing the machine, on the one hand, and the shield section of powered roof supports, on the other hand, in the direction of the notches at the same level, or due to changes of the angle of incidence of the formation position of the AFC with a treatment machine and partition panel powered roof supports with respect to each other is relative.

If during the passage of the notches, the angle error is less than 180 degrees, using a full, normal for normal production process of the step section of the shield of powered roof supports would lead to its collision with the cleaning machine, so according to the example of structural embodiment of the invention provides that when the angle of misalignment of less than 180 degrees step section of the shield of powered roof supports in the direction of the AFC decreases during the operating cycle thereby to allow passage of the treatment machine before the bottom part of the supporting beams.

If you travel through the saddle seam angle error becomes greater than 180 degrees, due to the provisions of the AFC and cleaning of the machine relative to the shield section of powered roof supports this leads to an undesirable increase in Pews, so in this case, the rapid advancement of the AFC with a treatment machine relative to section g the postal powered roof supports must be reduced, so as to limit Pews. According to one example of structural embodiment of the invention for this purpose provided that in fixing the angle between 180 degrees to reverse the AFC towards the coal face at an advanced forward section of powered roof supports, and thus the width of the tunnelling excavation of the roadway is reduced so that by the passage of the cleaning machine, the gap between the upper ceiling and the coal face was less than the normal width of the sinking.

To control such a situation is simpler in the case when according to the example of structural embodiment of the invention includes installation step hydraulic cylinder advancing roof support section greater than the width of penetration of the treatment machine, as this may prevent excessive increase of the gap between the upper ceiling and the coal face.

The same considerations regarding the management gap Pews also cover constructive form of downhole equipment, in which the upper overlapping sections of the support extended by sliding in the direction of the coal face the front of the console, if the sliding front console also has a tilt sensor, and the size of the departure sliding front console is controlled by the location is spent on a sliding front console motion sensor.

If one of the sections of the shield mechanized lining, made in the form lemniscates shield of powered roof supports, modifies the removal of the bottom end of the upper overlap depending on the height of the extension rack section of the shield of powered roof supports at the expense caused by the position located between the base of the shields and goaf shield lining traverse guide mechanism errors lemniscate, provided that this error as a correction factor taken into account when determining Pews.

The drawings show examples of the structural embodiment of the invention, which are described below. Shown:

Figure 1 - section shield of powered roof supports located on the sensor bias in combination with the face conveyor and is used as a cleaning machine, cleaning machine with a drum body in a schematic lateral projection,

Figure 2 - downhole equipment according to figure 1 in a schematic depiction,

Figure 3 - downhole equipment according to figure 2 with the threat of roof collapse due to deposits of rock pillow for supporting the ceiling,

4 is a specified position of the shield section of powered roof supports to prevent the formation rock pillow for supporting the casing in the schematic representation,

6 is the situation with the roof support according to figure 5 with the cutting of the roof,

Fig.7 - the situation with the roof support according to figure 5 and 6 in the next work cycle,

Figa-in - the impact of the passage grooves and passage through a saddle on Pews in schematic representation,

Fig.9 - downhole equipment according to figure 1 with the shield section of powered roof supports, with extra sliding front console

Figure 10 - image of the so-called errors lemniscate in section mechanized shield lining, made in the form lemniscates shield of powered roof supports.

Presented in figure 1 downhole equipment includes, first of all, section 10 shield powered roof supports with base runner 11, on which are two parallel mounted rack 12, of which figure 1 is visible only one hour, and at the upper end of which rests supporting the ceiling 13. While supporting the ceiling 13 of his front left end protrudes in the direction described below cleaning machine, to the rear right end support the ceiling 13 by hinge 15 is attached bearing swivel console 14, while bearing swivel console support is presented in two lateral projection fixed on the supporting skid 11 n the existing hinge console 16. Section 10 shield powered roof supports in the present exemplary embodiment has three sensor 17 of the draft, namely one sensor 17 draft - for supporting the skid 11, one sensor 17 of the slope in the rear area support the ceiling 13 near the hinge 15 and one sensor 17 pitch on the goaf shield 14. Although not presented, the installation of the tilt sensor can be provided also on the fourth movable element section 10 panel mechanical supports, load-bearing hinge brackets 16, with four possible sensor 17 of the slope should be set accordingly three in order based on the determined their location parameters to determine the position of the shield section of powered roof supports in a mining space. Thus, the invention is not limited only presented in figure 1 specific location of sensor bias, and includes all possible combinations of three sensors focus on four movable elements of the partition panel of powered roof supports.

Presented in figure 1 section 10 shield powered roof supports attached to the face conveyor 20, which is also equipped with a tilt sensor 21, so that from the point of view of control downhole equipment here you can also obtain data concerning the position of the conveyor. Above the conveyor 20 advances made in the form of itogo combine with drum 22 by the Executive body at the same time the machine with the upper drum 23 and the lower drum 24, thus in the area of the Shearer 22 with the drum by the Executive body is also the sensor 25 of the slope, in addition sensor 26 for registering the current location of the Shearer 22 with the drum body in a mining face, as well as measuring rods 27 for measuring the height of the section.

As follows from figure 2, the work described in figure 1 downhole equipment in a mining face looks so that downhole equipment moving along the sole 31 of the reservoir, while the drums 23 and 24 of the Shearer 22 with the drum by the Executive body develop the coal face 32. In this case, the roof of the reservoir 30 is supported by the top 13 overlap each section 10 shield powered roof supports, upon excavation of the roof of the reservoir 30 fall in pieces 40 in the passage of the stope. Figure 2 presents Pews (the gap between the ceiling and the coal face)formed in each of the technological situation between the bottom part of the support the ceiling 13 and the coal face 32 and delineate the boundaries of the freely hanging and unfortified area 34 of the roof of the reservoir 30, and the region 34 should principally be seen as dangerous from the point of view of the possibility of collapse.

As follows from figure 3, Pews 33 increases when the canopy 13 section 10 shield fur is dozirovanno lining is formed rock cushion 35, which creates a support for the roof of the reservoir 30. In figure 3 presents the example of execution in the area of the upper layer gate 32 simultaneously formed slope 36, and can be seen without fundamental changes to the provisions of the mining equipment in comparison with figure 2 is formed substantially greater Pews 33, so that the threatened collapse of the region 34 is greatly increased.

Figure 4 shows that at a constant prescribed bias support the ceiling 13, descending from its bottom end in the direction of the passageway 40 formed in the course of promoting the breed cushion 35, respectively, is removed. At the same time in the field supporting the skid 11 can be noted that the supporting runner 11 should be set at a slight upward angle in the direction of the notches 38 in relation to the face conveyor 20, as this will improve the slip lying on the bottom of the reservoir 31 to the bulk ore. First of all, these measures can be implemented using not represented in more detail, located on section 10 shield powered roof supports overlap between the support 13 and goaf shield 14 corner jacks, as well as through well-known lifting device in the area reference skid 11 (so-called basic lift).

If, therefore, on the basis presented in the invention of a way to climb is to be placed will be possible to avoid formation for supporting the overlapping breed pillows, Pews 33 will be correspondingly smaller.

Figure 5-7 presents now the passage of downhole equipment through the region of the roof of the reservoir with the collapse of 37. In addition, figure 5 shows that when collapse occurred 37 there is a danger that the bottom end of the upper slab 13 will enter the zone of collapse 37, and this process can be recorded by means mounted on supporting the ceiling 13 of the sensor 17 of the draft. As another identifying characteristic of the presence of a roof, which can be used is the change in elevation support the ceiling 13, set a fixed height extension racks roof support section 12, using, for example, the placement of the respective sensors 18 on the rack 12. If supporting the ceiling 13 took the presents in the diagram position, moving into the zone of collapse 37, it is obvious that - as it is seen in Fig.6 - supporting the ceiling 13 hit would be on the edge of collapse 37 from the side of the face and at the same time or would prevent further advancement of the section 10 shield powered roof supports forward or it would collapse 37. To prevent such undesirable effects, it is provided for supporting the ceiling 13 is installed only in such or such a bias, it was also preceded by the work cycles with full conformance to the top of reservoir 30, so extension support the ceiling 13 in the zone of collapse 37 does not occur. Thus, supporting the ceiling 13 of the strike zone caving 37, as it is fundamentally presented on Fig.6. When the bottom end of the supporting slabs 13 will again be up against the roof of the reservoir 30, it will eliminate the tendency to bias the upper slab 13, and this may be seen as a signal that produced cutting caving 37.

Similarly, requiring attention situation occurs when the next work cycle, when, as is seen from Fig.7, the rear part of the support overlapping 13 gets into the zone of collapse of 37, so as a result of pressure racks this rear part also has a tendency to move to the collapse of 37, so that a corresponding distortion of the upper slab 13 in the direction of the notches 38. This situation is well managed, if the installation of slope support the ceiling 13 is the same as in the previous operating cycle.

If presented in figure 2-7 examples of constructive execution we are talking about the control or management actually installed Pews, it is necessary to distinguish it from the technically required Pews, which is formed depending on the design decisions of the downhole equipment. This technical Pews corresponds safe Russ is the right, which should be supporting the ceiling 13 in the promotion of the face conveyor 20 in the direction of the gate 32 so that when the passage is moving along the face conveyor 20 cleaning machine 22 to prevent a collision between the cutting drum 23 and the upper shield overlap 13. When conditions change, the fall of the reservoir, which may be associated with the passage grooves, or passing through the saddle, the difference between the slope section of the shield of powered roof supports and the AFC and bias cleaning machine leads to changes in Pews, which turns out to be more or less technically necessary Pews. If the gap is less technically driven Pews, there is a danger of collision of the cleaning machine with the shield section of powered roof supports, while exceeding technically required Pews increases the risk of collapse of the fragile roof of the reservoir.

As shown in figa-in, with the passage of the grooves and passing through a saddle result in undesirable changes in Pews. As follows from comparison figb with figa, the passage grooves (figb) leads to the inclination of the face conveyor 20 and cleaning of the machine 22, the degree of which can be registered by means of located in these sensors slope 21 or 25. Recorded parameters of the slope can be compared with parameters of slope, marked on the section and 10 shield powered roof supports, resulting in the angle of misalignment, which refers to the corresponding support surface section 10 of powered roof supports and the AFC 20 with the cleaning machine with the drum by the Executive body on the bottom of the reservoir 31. Presented at figb the passage of the notches, the angle error is less than 180 degrees, and this leads to what is still available on figa the gap between the bottom part of the supporting slabs 13 and cleaning machine 22 is reduced, and along with it, and formed, not presented here Pews. To eliminate the associated risk of collision, according to the invention provides that in such a situation, section 10 shield mechanized lining is pulled not on full step value, and a little behind the AFC 20 cleaning machine 22 to be respected necessary for technical reasons Pews.

The opposite situation occurs when passing through a saddle as shown in figv compared to Figo. Here the angle of misalignment is greater than 180 degrees, which means the increase of the gap in the field of the roof seam overlap between the support 13 and cleaning machine 22, and hence Pews. In order to prevent in this case, an excessive increase in Pews, provided that in the automatic mode section 10 Sch the postal mechanized lining is pulled forward at full step, however, the width of the penetration of the treatment machine 22 decreases.

Appropriate management of control is technically due to Peos and agreed with him by way of promoting downhole equipment allows best way to reduce the so-called "box", i.e. the gap between the section 10 shield mechanized roof supports and the face conveyor 20 so that it supports the overlapping ledge 13 is pushed forward in the direction of the gate 32, and Pews 33 consequently decreases. Because the insert can be adjusted in mode of operation, depending on the conditions of the reservoir, you can choose the appropriate automatic operation of downhole equipment, controlling the process of pulling section 10 shield powered roof supports manually until you install a technically necessary Pews.

As shown in Fig.9, also known section 10 shield powered roof supports, with the upper slab 13 drawer console 41. The invention can also be implemented with such sections 10 shield powered roof supports. For this purpose it is envisaged that the sliding console 41 is also located the sensor 17 of the draft, and the system 42 of the measurement path so that when the automatic management of the work cycle section 10 shield powered roof supports could tracking is to position retractable console 41 in comparison with the supporting skid 11.

Following correction of deficiencies within the application according to the invention is possible using the so-called lemniscate panel mechanical supports, in which the position of the bottom end of the supporting slab 13 is changed depending on the height extension of the shield, and marked on figure 10 error 43 lemniscate should accordingly be taken into account when determining Pews in the particular case.

Conditions for controlling the gap between the ceiling and the coal face in mode of automatic operation section of the shield of powered roof supports can be improved also due to the fact that structural changes may be made in sections mechanized shield lining when carrying out repair and maintenance works on the earth's surface. This applies also and above all new developments shield sections of powered roof supports, under which the requirement for automated operation of the lining may be considered at the outset.

Disclosed in the above description, claims, abstract and drawings of the signs of the subject of this documentation can be significant both individually and in any combination in relation to each other for implementing the invention in its various structural forms.

1. The method of controlled compliance predpochtitel the CSO with regard to rock mechanics gap (33) between the upper ceiling and the coal face in Stopes, come face conveyor (20), at least one cleaning machine (22), and a hydraulic shield mechanized support, the development of coal by underground methods, characterized by the fact that by placing at least three of the four key elements of each section (10) shield of powered roof supports, i.e. on the supporting runner (11), goaf shield (14), bearing hinge brackets (16) and in the dammed area support the ceiling (13), sensors (17) slope determine the slope of the supporting floor (13 and the supporting skid (11) in the direction of the grooves, on the basis of the measurement data with emerging changes of angle supports overlap (13) in the computing unit determines the appropriate gap (33) between the upper ceiling and the coal face and automatically control the operational life cycle section (10) shield of powered roof supports, consisting of unloading, supply and disposal, thus, to establish the optimum gap between the ceiling and the coal face.

2. The method according to claim 1, in which by means of sensors (17) slope determine the slope of the individual sections (10) shield of powered roof supports in the transverse notch direction and compare with transverse slope of the adjacent sections (10) shield of powered roof supports, and if it exceeds one of the set in which the quality of admissible parameters during a working cycle aligns the corresponding section (10) shield of powered roof supports relative to the adjacent shield sections of powered roof supports.

3. The method according to claim 1 or 2, wherein each duty cycle section (10) shield of powered roof supports supporting the ceiling (13) is positioned so that there is a bias-aware overlay (13) from its bottom end towards the end of the dammed area.

4. The method according to claim 3, in which position control supports overlap (13) is by located on section (10) shield of powered roof supports corner jacks.

5. The method according to claim 1 or 2, wherein each duty cycle section (10) shield of powered roof supports, the slope of the supporting runner (11) is positioned so that there is accommodation at the rising of the supporting runner (11) relative to the AFC (20).

6. The method according to claim 5, in which position control of the supporting runner (11) is performed by means located on section (10) shield of powered roof supports lifting mechanism.

7. The method according to claim 1, wherein when the detection occurred between the two working cycles of the bias-aware overlay (13) in the direction of the notches when the next work cycle set this inclination of the upper cover (13), which corresponds to the position of the upper floor (13) in the previous cycle.

8. The method according to claim 7, in which register the height of the extension supporting the upper floor (13) hundred is (12) of section (10) shield of powered roof supports and consider the appropriate level of support the ceiling (13) relative to the supporting skid (11) in a separate operating cycles to determine the required position of the supporting overlap (13).

9. The method according to claim 7, in which the process of spreading sections (10) shield of powered roof supports automatically terminate if the sensor (17) bias-aware overlay (13) captures the correct position supports overlap (13) compared to its position during the previous business cycle.

10. The method according to claim 9, in which the control system to guarantee the initial thrust of the section (10) shield of powered roof supports at the end of the working cycle is automatically de-activated and re-activated for the subsequent operating cycle.

11. The method according to one of claims 7 to 10, in which step the hydraulic cylinder shifting lining providing the pulling section (10) shield of powered roof supports to the face conveyor (20), is controlled by means of the device measurement path.

12. The method according to one of claims 7 to 10, in which the downhole pipe (20) and/or cleaning machine (22) is set according to one sensor (21, 25) of the slope and determine the angle of inclination of the face conveyor (20) and/or cleaning of the machine (22) in the direction of the notch.

13. The method according to item 12, which when installed deviations in the angles of inclination of the face conveyor (20) and cleaning machine (22), on the one hand, and section (10) shield of powered roof supports, on the other hand, determine the angle of misalignment between the support is again the AFC (20) and section (10) shield of powered roof supports.

14. The method according to item 13, in which when the angle of misalignment of less than 180 step section of the shield of powered roof supports (30) in the direction of the AFC (20) decreases during the operating cycle so that the possible passage of the cleaning machine (22) before the visor bottom part of the support overlapping (13).

15. The method according to item 13, in which at fixing the angle between 180 reverse the AFC (20) in the direction of the gate (32) when advanced forward section (10) of powered roof supports is reduced so that, with the passage of the cleaning machine (22) sets the maximum allowable gap (33) between the upper ceiling and the coal face.

16. The method according to claim 11, in which the step of shifting cylinder shield set larger than the width of the penetration of the treatment machine (22).

17. The method according to claim 1, wherein supporting the ceiling (13) is arranged to extend through sliding in the direction of the gate (32) front console (41) and slide out the front console (41) is a sensor (17) slope, and the size of the departure sliding front console (41) is registered by means located on the sliding front console (41) of the system (42) of the measurement path.

18. The method according to claim 1, in which occur depending on the height extension section (10) sitovo the mechanized roof supports error (43) lemniscate considered when defining a gap (33) between the ceiling and the coal face.



 

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8 cl

FIELD: mining.

SUBSTANCE: extraction device of coal in longwall face of underground mine working consists of the following: many sections of powered support, which are installed near each other throughout the length of longwall face between gates; plough machine; chute and conveyor located in it with possibility of movement, which are located throughout the length of longwall face between extraction machine and support sections; several deflecting devices and control device. Plough machine is provided with possibility of being moved along the line of the mining face and equipped with rock detection sensor which is provided with possibility of transmitting radio data of the detected rock to the control device of the support by means of the transmitter installed on the plough and the radio receivers installed along the longwall face. Group of adjacent support sections and sections of the chute corresponds to each deflecting device. Deflecting device is connected to control unit of one of the support sections of the appropriate group, and depending on the data of the detected rock, it provides the possibility of lifting the chute sections of the appropriate group, which is accompanied with lowering of the tools of the plough machine, and lowering of the chute sections, which is accompanied with lifting of plough machine tools. Control device includes the following: bottomhole control unit located at the end of longwall face for control of functions of support sections in relation to unloading, transportation and bracing of the support; control units of sections, each of which is put into spatial and functional compliance with the appropriate support section for performing and further transmitting the commands from bottomhole control unit; and the bus connecting mainly in series the bottomhole control unit to control units of support sections. At that, rock sensor when moving beside each support section is provided with possibility of generating the measurement signal characterising the detected rock only for several, mainly not more than two measurement points. Measurement signals received at neighbouring measurement points are subject to analysis with a view to predominance of rock or coal. Depending on analysis results, there generated is deviation signal supplied to the common deflecting device common for all measurement points, and namely to the deflection of the chute sections, which causes the lifting of plough machine tools if analysis results show the predominance of rock at the analysed measurement points, and to deflection of the chute sections, which causes the lowering of the plough machine tools if the analysis results show coal predominance at the analysed measurement points.

EFFECT: possible quick correction of the plough machine position during the coal extraction, which causes the lifting and lowering of the plough.

9 cl, 2 dwg

FIELD: mining.

SUBSTANCE: equipment consists of electric-hydraulic driven sections of lining with corresponding facility for lining control. Additionally, there is foreseen at least one doubled block of power source, which provides current for at least two means of lining control of different sections of lining independently from each other. A double-sided element of communication is installed between the power source block and at least two means of lining control; this element performs galvanic separation between the power source block and means of lining control and/or groups of means of lining control. Also the element of communication forms a galvanic separated data transmitting channel which facilitates communicating between two means of lining control and/or groups of means of lining control. Notably, double-sided element of communication is in-built into the power source block or is flange mounted directly on the case of power source block.

EFFECT: simplification of design of face equipment.

4 cl, 2 dwg

FIELD: mining.

SUBSTANCE: invention relates to control system over underground face support with transport. The control system for underground walking face support consists of transporter, winning machine, plurality of panels each equipped with a block of functional control with a corresponding panel, of a facility connecting control blocks between themselves, of a central station located outside long wall face and communicating means for transmitting data between control blocks in the long wall face and the central station outside long wall face. The communicating means include at least one radio transmitting device from the side of the long wall face and one radio transmitting device from the side of the central station with receiving and transmitting modules to facilitate wireless and cable less two-directional data transmitting at the long wall face end.

EFFECT: minimisation of costs for cable laying for underground control system over face support and increase of reliability of face support control.

7 cl, 2 dwg

FIELD: mining.

SUBSTANCE: support control system to control shield support section movement in breakage face of mine contains central device of control (CDC) and set of control units (CU) each of those is located at corresponding section and functionally coupled with this section. At that CU of sections are connected with CDC and between each other with two bus bars and designed so as to facilitate a call of CU of any section from CDC or from CU of the neighbour section to control command input. Also CU of each section is programmed so as to transmit received control commands via the bus bar; the said commands, equipped with a code word assigned to the CU called at that moment, are transmitted to this particular CU for execution. Owing to the second analog bus bar (a parallel one) received signals not equipped with the code word assigned to the CU called at the moment, are transferred to CU of the neighbour section.

EFFECT: upgraded reliability of excavating machine and mechanised support due to safe and trouble free operation of their work with insignificant costs for maintenance.

2 cl, 3 dwg

FIELD: engines and pumps, mining operations.

SUBSTANCE: system composed of hydraulic units for underground mining operations is intended for, particularly, underground working supports, actuators and/or pickups, all of them being encased and interconnected or can be connected, via a data transfer system, to the control unit. Note that every actuator is designed to make every hydraulic unit function operate and/or every pickup is set up to read out the hydraulic conditions at the point of measuring whatever quantity of the walking support. Mind that every actuator (3) and/or sensitive element (7, 8) in its casing (4; 18, 19) are wired to readout unit (20; 30), while hydraulic unit (1) for every function (2) or every point of measurement is connected to data element (12; 13) connected in the circuit to allow a readout unit with a receiver and/or transmitted module (20; 30) to effect a contactless inductive data readout therefrom and to transmit the said data to control unit (6). Data element (12; 13) represents a transponder or a transmitter incorporating a receiver coil. The control unit (6) uses this data via the data transfer system to allow an automatic single-valued identification and reprogramming.

EFFECT: faultless connections.

8 cl, 3 dwg

FIELD: mining.

SUBSTANCE: system includes multiple control units (CU), each positioned at the respective section and functionally conjugated thereto. The CU of each section features multichannel transceiver, whereby a CU communicates to a portable decentralised control device for controlling signal reception and measurement and condition data transmission in the simultaneous transceiving mode. Section CUs are programmed so that controlling signals received by radio are not converted into lining section functions unless the controlling signal carries a code word assigned to the addressed CU. Section CUs are preferably interconnected by two electric buses for transmission of entered data to all section CUs and feature amplifier for restoration of signals received via electric bus.

EFFECT: improved operation reliability of winning machine and powered support due to sustaining safe and fail-proof operation at low cost.

3 cl, 3 dwg

FIELD: construction.

SUBSTANCE: adaptive system for movement of a construction machine measures counteracting forces applied by soil surface to a milling drum, and in response to measured changes of these counteracting forces it controls a moving force fed to a moving drive of the machine, or moderates speed of lowering of a rotary milling drum.

EFFECT: early and quick detection of such changes in counteracting forces makes it possible for a control system to assist in prevention of forward or backward list phenomena accordingly in a construction machine.

21 cl, 9 dwg

FIELD: miningo.

SUBSTANCE: invention relates to mining, particularly, to mining machine displacing along conveyor. Proposed machine comprises sensor system arranged on machine frame 11 to perceive boundary zone mineral wealth/host rock. Note here that machine frame front side has sensor system mount. Note also that geological radar is used as the sensor system. Said mount can be adjusted over height. Besides, it is composed of several parts and comprises main box with to and/or bottom holes to house geological radar. Deflectors are arranged on both sides of said main box.

EFFECT: possibility to sound entire front of second working.

12 cl, 5 dwg

FIELD: oil and gas production.

SUBSTANCE: proposed device comprises hydraulic cylinders, electrically control hydraulic control valves, oil unit, and remote control board. It comprises also boom turn (lift) angle and telescope position transducers. Heading drive motor current transducer. Microcontroller with memory containing algorithm of defining face rock toughness, maximum feed rates depending upon motor current. To determine delivery of axial piston pump, an appropriate algorithm is used. Said pump is controlled via frequency inverter by PDM signal from microcontroller output. Mean voltage is selected from microcontroller to control induction motor squirrel-cage rotor rpm by adjusting pump shaft rpm.

EFFECT: otimised heading drive load current control.

2 dwg

FIELD: mining.

SUBSTANCE: in control method of drum actuating element equipped at least with one lever of drum actuating element each electric hydraulic section of the support is equipped with its own electric hydraulic control instrument. Control commands are entered for correction of lever position of drum actuating element from control instrument of support section. And they are supplied from there to control system of drum actuating element.

EFFECT: improving control efficiency of the cut by means of drum actuating element.

8 cl

FIELD: mining.

SUBSTANCE: system to control mining machine comprises a hydraulic drive of travel and a drilling rod with a power hydraulic control unit, a hydraulic drive of a loading element and hydraulic cylinders of a drilling rig with a power hydraulic control unit, an electrohydraulic unit of power hydraulic units control with a system of electric interlocks, sources of supply for hydraulic drive and control systems. At the same time power hydraulic units to control a hydraulic drive of travel, a drilling rod, a hydraulic drive of a loading element and hydraulic cylinders of a drilling rig are equipped with additional locking devices installed between sections of the hydraulic control units.

EFFECT: locking of the caterpillar drive and loading element drive during operation of drilling equipment to ensure safety of maintenance personnel.

1 dwg

FIELD: physics.

SUBSTANCE: system consists of an optical direction selector, a photodetector unit, as well as: a unit for controlling the direction selector, a signal matching unit, a microcontroller, a decoder, a matrix background polling module, bus-type conditioners, an interrupt signal generating unit, a switch, electric drives, a unit for monitoring and controlling electric drives, an optical transmitter control unit, an optical transmitter, a photodetector. All of these elements are interconnected.

EFFECT: determination of spatial coordinates of a mini-shield with high accuracy, which enables real-time communication with apparatus fitted on the mini-shield through a laser beam, endowing this system with noise-immunity and high speed of operation.

1 dwg

FIELD: mining.

SUBSTANCE: extraction device of coal in longwall face of underground mine working consists of the following: many sections of powered support, which are installed near each other throughout the length of longwall face between gates; plough machine; chute and conveyor located in it with possibility of movement, which are located throughout the length of longwall face between extraction machine and support sections; several deflecting devices and control device. Plough machine is provided with possibility of being moved along the line of the mining face and equipped with rock detection sensor which is provided with possibility of transmitting radio data of the detected rock to the control device of the support by means of the transmitter installed on the plough and the radio receivers installed along the longwall face. Group of adjacent support sections and sections of the chute corresponds to each deflecting device. Deflecting device is connected to control unit of one of the support sections of the appropriate group, and depending on the data of the detected rock, it provides the possibility of lifting the chute sections of the appropriate group, which is accompanied with lowering of the tools of the plough machine, and lowering of the chute sections, which is accompanied with lifting of plough machine tools. Control device includes the following: bottomhole control unit located at the end of longwall face for control of functions of support sections in relation to unloading, transportation and bracing of the support; control units of sections, each of which is put into spatial and functional compliance with the appropriate support section for performing and further transmitting the commands from bottomhole control unit; and the bus connecting mainly in series the bottomhole control unit to control units of support sections. At that, rock sensor when moving beside each support section is provided with possibility of generating the measurement signal characterising the detected rock only for several, mainly not more than two measurement points. Measurement signals received at neighbouring measurement points are subject to analysis with a view to predominance of rock or coal. Depending on analysis results, there generated is deviation signal supplied to the common deflecting device common for all measurement points, and namely to the deflection of the chute sections, which causes the lifting of plough machine tools if analysis results show the predominance of rock at the analysed measurement points, and to deflection of the chute sections, which causes the lowering of the plough machine tools if the analysis results show coal predominance at the analysed measurement points.

EFFECT: possible quick correction of the plough machine position during the coal extraction, which causes the lifting and lowering of the plough.

9 cl, 2 dwg

FIELD: mining.

SUBSTANCE: invention relates to the field of mining and may be used in designs of mining machines and other fields of machine building. Hydraulic system of mining machine control is additionally equipped with hydraulic cylinders of telescope tightening, in working manifolds of which there is a hydraulic valve installed with logical function "OR", as well as controlled check valve with control cavity, besides inlet manifolds of hydraulic valve with logical function "OR", which is installed in working manifolds of hydraulic cylinders for telescope tightening, are connected to outlet channels of hydraulic valves with logical function "OR", which are installed in outlet channels of hydraulic distributors for control of hydraulic cylinders of actuator lift and rotation, and control cavity of controlled check valve is connected to outlet channel of hydraulic valve with logical function "OR", which is installed in outlet channels of hydraulic distributor for control of hydraulic cylinder of telescope extension.

EFFECT: invention increases rigidity and reliability of support structures of mining machine actuator, improves durability of machine as a whole.

1 cl, 1 dwg

FIELD: mining.

SUBSTANCE: device for orientation of tunnelling system during construction of curved tunnels includes the units located in line of sight and at the specified distance from each other, the end ones of which are rigidly fixed, one - in starting tube, and the other one - on tunnelling shield, intermediate units are installed inside the erected part of the tunnel, each unit is equipped with a photo sensor, light emitting element and roll sensor, also, the device is provided with sensor of amount of advance and data transfer channels between the device assemblies and computing unit with a display; at that, each unit is equipped with a plate with sector symmetric light-tight slots, plate is located on motor shaft the axis of which coincides with the direction of tunnelling operation, on both sides of the plate in horizontal and vertical planes passing through motor axis there installed are light-emitting elements directed to the plate side; at that, each unit contains differently directed photo sensors oriented parallel to motor axis.

EFFECT: improving the orientation accuracy of tunnelling system and operating characteristics of the device, and increasing standardisation of the device components.

3 dwg

FIELD: mining.

SUBSTANCE: group of inventions is related to system and methods for control of getting machine along bottomhole in underground mine tunnel, and also to mining face for method realisation. Method includes measurement of gas concentration and depending on measurement results, generation of warning signal. At the same time volume of production achieved by getting machine is additionally established. In case of insufficient correlation between volume of production and gas concentration, a warning signal is generated.

EFFECT: invention provides for possibility to minimise danger of methane gas explosion in mining face, to establish fact of gas sensor failure and/or manipulation with it.

26 cl, 3 dwg

FIELD: mining industry.

SUBSTANCE: device has two asynchronous electric engines, connected via reducers to drive sprockets of continuous traction chain, provided with plane carriages with their possible displacement along the guide, and hydraulic cylinders for displacing guide on pit-face. To windings of stators of first and second electric engines connected respectively are outputs of first and second frequency converters, inputs of which are connected to power grid and control inputs of which are connected respectively to outputs of first and second frequency adjusters. To frequency adjusters also connected are inputs of load detectors, to outputs of which load balancing block is connected, outputs of which are connected to inputs of first frequency adjuster. To inputs of both frequency adjusters output of load adjuster is connected, inputs of which are connected to load-setting block and load sensor for second engine. To output of second frequency converter connected are input of control block, other input of which is connected to signal block of base plant, and stator winding of third asynchronous engine, which via mechanical link is connected to first and second hydraulic pumps, having constant working volumes. Output of first hydraulic pump is connected to force hydro-main and input of second preventing hydraulic valve and to first inputs of two-position hydraulic distributors with electromagnetic control, to electromagnets of which outputs of control block are connected. Second inputs of two-positional hydraulic distributors with electromagnetic control are connected to control chambers of hydro-controlled two-positional hydro-distributors, which are part of hydro-blocks. Outputs of hydro-controlled two-positional distributors are connected to opposite hollows of volumetric dosing device of each hydro-block, and their inputs are connected respectively to outputs of hydro-distributors for controlling hydro-cylinder for moving the guide on pit-face, inputs of each of which are connected to force and drain hydro-mains, and outputs are connected to piston and rod hollows of appropriate hydro-cylinder.

EFFECT: higher efficiency.

1 dwg

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