Mechanised longwall set of equipment by professor kariman for bulk mining

FIELD: mining.

SUBSTANCE: mechanised longwall set of equipment for mining comprises sections of a powered support, a hydraulic cutting cleanout machine with actuators and hydraulic cutting heads, joined via metal tubes with a water-supply manifold, a hydraulic booster, a plane with two drives and a plate conveyor with load-carrying plates on rollers, and also comprises a transshipment platform with a mechanised sliding bottom. At the same time the set of equipment additionally comprises a scraper conveyor and a hydraulic support "Sputnik" structurally connected to each other by advancing rams. At both sides of the plate conveyor there are channel guides installed to move coalcutters along them with cable handlers. Besides, the coalcutter installed at the face side of the plate conveyor has a vertical upward direction of a cutting jib in parallel to the face line, and the coalcutter installed at the goaf side of the plate conveyor has a direction of a cutting jib in the bed plane along its border with the roof. The hydraulic machine of the set of equipment is fixed in the end part of the longwall face at the side of the transport mine, and hydraulic abrasive jets work in the transverse plane perpendicular to the direction of cut coal body displacement.

EFFECT: higher efficiency of a mining face due to reduction of duration of a process mining cycle.

4 cl, 14 dwg

 

The invention relates to mining in the area of underground mining of minerals lying flat reservoir, with a capacity of 1.2-3.5 m

Known treatment mechanized complexes for the development of sloping layers using combine harvesters or planes. This treatment complexes KM - 138, KM - 142, DSM - 143, KM - 144, KM - I, MK - 85, KMC - 500, KMC - 700, GST - 41 and other (1). The equipment consists of a hydraulic powered roof supports, face conveyors, harvesters or planes. For mechanized roof supports used hydraulic energy emulsion which is produced by the pumping stations.

The closest is "cleaning mechanized complex with fossil large blocks and delivery escalators" (see RF patent №2398107, C2, E21C, registered on August 27, 2010).

The fossil is made by cutting out from the bottom hole of the array of large blocks with one gidratnoi machine, equipped Executive tools for cutting three types of slots:

- cross over the entire layer thickness, directed perpendicular to the line stope: transverse slits are cut along the length of the lava in the bottom hole array at the same distance from each other and equal to the length of cut blocks fossil;

- rear vertical slit along the length of the lava IPO height at full capacity of the reservoir, separating excavated on this cycle bottomhole array from the rest of the array;

the upper slit, parallel to the plane of the layer, cut along the roof of the reservoir through the array of fossil along the length of the lava.

Transverse slits are cut when stopped gidratnoi car, and the rear vertical slit and the upper border of the roof are cut when moving. Cutting transverse slots precedes each section along the length of the lava to cutting back and upper slits.

The cutting of the slits is preceded by pre-creating the lower Podravka layer simultaneously along the entire length of the lava. The lower bomb it is the work of a plane while moving in the formed cavity of the delivery conveyor. Cut blocks fossil is made after complete valve hemmed in the cavity of the delivery conveyor when stopped the plow.

Loading blocks on the conveyor is made by dropping down under its own weight on the load-carrying plate conveyor, which moves the blocks to transportation development.

In the method adopted for the prototype, there are a number of irrational technological solutions in the revision which reveals the possibility of a sharp increase productivity stope. These include:

1. The impossibility of combining cut b the shackles of fossil with a plow on the education of the lower Podravka; this leads to an increase in the cycle time for 30-40 minutes.

2. The impossibility of combining cutting transverse slots with simultaneous displacement of the rear vertical slit and the top of the slit along the roof of the reservoir; this leads to an increase in the cycle time for another 30-40 minutes.

3. Speed-cutting the rear vertical slit and the top of the slit may be no more than 1-2 m/min abrasive hidromasaje; when used for these purposes, coal-cutter with cutting bars with mechanized movement of cables speed cutting slits can be increased to 6 m/min

4. Cutting transverse slots before cutting longitudinal (back and top) of the slots prevents the development of scope of work for cutting longitudinal slits, and prevents the combination of cutting transverse slots and execution of the idle driving electric cars, which increases the cycle time for another 17-20 minutes.

5. Difficulty mechanization move emulsion sleeves to mobile gidratnoi machine.

The purpose of the invention is similar to the purpose of the prototype is to create a technology that provides a significant performance increase stope compared with the existing average performance Shearer and plow full-mechanized longwall mining, about what the ensuring a high level of security of wastewater treatment works, including gas factor, the elimination of dust in the air lava dust generated during the extraction of fossil, the elimination of non-motorized heavy labour, ensuring a high technical and economic indicators of production when working Stopes in difficult mining and geological conditions.

According to the submitted application, a new treatment plant performs the following processes:

- creation of the lower Podravka reservoir through the work of the plow and hydraulic roof supports Sputnik;

- cutting electric machines slots in the bottom of the array along the length of the lava with his down on the underneath of the plate conveyor;

- waterjet cutting water jet high pressure transverse cracks on the cut thicker bottom-hole array at the bottom of the lava when left work plate conveyor;

- move the plate conveyor lying on its load-carrying plates cut out the bottom hole array in the lower part of the lava and cutting transverse slots;

- overload cut blocks with fossil plate conveyor on the vehicle, located on the transport development;

shifting mechanized roof supports and the delivering pipeline to a new position after discharge of all blocks with the delivery of convey the a and the idle end of the driving electric cars with a total podvigina lava on the width of the plate conveyor.

This treatment plant, while maintaining the advantages of the prototype: security on the gas factor, environmental dust, etc. has a very important advantage is the very high performance stope due to the fact that the duration of the technological cycle of production is reduced to 60 minutes.

When moving on a conveyor width of the rod 2.4 m speed podvigina stope can grow up to 43 m/day. At such speeds, podvigina lava management roof can be smooth deflection.

The invention is illustrated by drawings, each of which is shown following.

Figure 1. The arrangement of pollution control equipment in a mining face, view the profile; 1 - lower bomb it; 2 - bottom of the lower Podravka; 3 production; 4 - scraper conveyor; 5 - support "Sputnik"; 6 - they are used; 7 - plate conveyor; 8 - cut unit of fossil; 9 - electric machine; 10 - channel rails; 11 - cutter bar cutting back slit; 12 - shaft feeder rotation from the cutting end to the bar; 13 - rear vertical slit; 14 - electric machine cutting through the upper slit; 15 - cutting bar cutting the top of the slit; 16 - upper gap; 17 - channel rails electric machine; 18 - cable electric machine; 19 - visor mechanized roof supports.

Figure 2. Cutting transverse slots, gikore the Noah cleaning machine; view the profile; 1 - lower bomb it; 7 - plate conveyor; 19 - visor mechanized lining; 20 - slotted portion of the lateral slit; 21 - cut from the bottom of the array thickness fossil, cross cut slits into separate blocks; 22 - waterjet stream; 23 - waterjet cutting head; 24 - metal water supply pipe high pressure (SVD) to the cutting head; 25 - flexible supply tube abrasive to the cutting head; 26 - guides moving Executive gidroliznogo tool horizontally; 27 - guides moving Executive gidroliznogo tool vertically; 28 - feed hopper for abrasive; 29 - adapter; 30 - vertical metal tube water supply SVD to the cutting head; 31 - horizontal space hosting highway water supply SVD to gitorious nodes; 32 - highway water supply SVD.

Figure 3. Cutting transverse cracks Executive tool gidratnoi machine "the THUNDER", type in the plan; 23 - waterjet cutting head; 24 - metal supply tube ultra high pressure water to the cutting head; 25 - flexible supply tube abrasive cutting head; 26 - guides move horizontally truck with the Executive instrument; 28 - feed hopper for abrasive; 29 - adapter; 31 - horizontal space hosting is Magistrali supply SVD to the cutting units; 32 - highway water supply SVD.

Figure 4. Power steering; front view; 33 - hydraulischer; 34 receiver; 35 - filter; 36 is a pump for water injection.

Figure 5. Plate conveyor; cross section; 37 - carrying plate; 38 - rollers; 39 - pans; 40 - sill; 41 - supporting transverse plate; 42 - roller; 43 - eyes; 44 - blades; 45 - traction chain; 46 - axis; 47 - axis idlers; 48 - transverse plate with holder axis idlers.

Figure 6. The location of the actuator plate conveyor; in profile and plan; 37 - carrying plate; 49 - linear section; 60 - transition sections; 51 - pass vydatnou drum; 52 - actuator with gear.

Figure 7. Longitudinal section of the linear sections of the conveyor along the line of the eyes; 37 - carrying plate; 38 - rollers; 41 to the base plate; 42 - roller axis; 49 - coupler 50 to the bottom of the pans; 51 - plate porojniakova branches; 52 - holders idlers.

Figure 8. Longitudinal section of the linear sections of the conveyor along the line of the shoulder blades; 37 - carrying plate; 41 - supporting transverse plate; 42 - roller blades; 45 - traction chain; 50 - the bottom of the pans; 51 - plate porojniakova branches; 52 - holders idlers 53 - pull.

Figure 9. The conveyor chain conveyor, linear incision; 45 - traction chain; 53 - pull.

Figure 10. Thrust and traction chain plan; 53 - pull; 54 - traction love the key; 55 - anchor bends thrust; 56 - guides of the pan.

Figure 11. The design of traction and pan; cross section; 41 - supporting transverse plate conveyor; 54 - traction blades; 57 - the top half of the pan; 58 - the bottom half of the pan.

Figure 12. Schematic design of plate conveyor, front view; 37 - carrying plate; 42 - roller; 59 - linear section of the conveyor; 60 - transition sections; 61 - bypass drums; 62 - cargo branch; 63 - idle branch.

Figure 13. Handling platform; front view; 37 - carrying plate; 41 to the base plate; 42 - roller; 45 - traction chain; 61 by - pass drum; 65 - the drive sprocket; 66 - overload unit of fossil; 67 transport platform; 68 - they are used; 69 - stoppers; 70 - body; 71 - metal rails; 72 - the underside of the vehicle with motorized vidigal.

Figure 14. Loading point of purification of the complex; in terms of; 73 - drive head plate conveyor; 74 - handling platform; 75 - transport platform; 76 - the drive station plow; 77 - loader.

Cleaning mechanized complex according to the submitted application includes:

section hydraulic powered roof supports on the length of the lava 200 m from the pumping stations to transport the emulsion and emulsion sleeves;

- plow installation for carrying out n who sung Podravka mined seam as part of a plow, scraper conveyor and they are used;

- hydraulic landing support "Satellite" for securing the bottom Podravka;

- electric machine for cutting the rear vertical slit with the transport carriage and channel guides;

- electric car made with a cutting bar for cutting through the upper slit along the border with layer top with the transport carriage and channel rails with cable-handling vessel and truck chain;

- gidratnuju machine for cutting transverse slots and pump stations to supply machine emulsion;

- plate conveyor for the issuance of the stope on the haulage drift fossil in large blocks;

- handling platform for handling blocks with fossil plate conveyor to transport the platform to the haulage roadway.

Plow

Plow has (see Figure 1) plane 3, the conveyor chain, special conveyor 4, the upper and lower driving station, the support mate, hydropredict, electrical equipment with a sprinkler system and gate equipment.

Hydraulic shoring "Sputnik"

Hydraulic shoring "Sputnik" is used to fasten the roof at the bottom of the bomb it and mechanization of shifting a special production line, working as part of a plow. KREP "Sputnik" consists of s is s (see 1), each of which includes hydromentia landing strut 5, the set of valves, gidrotartrat advancing bilateral actions: provides shifting of the conveyor plow and the lining. The control stand and the hydraulic cylinder is produced from the distributor "Era" manual.

Electric machine for cutting the rear vertical slit

Electric machine for cutting the rear vertical slit is located at the bottom of the bomb it between shields "Sputnik" and slat conveyor. Electric machine is mounted on a trolley moving along the length of the lava on the channel guide. Together with rubbishing on the truck are the Bay of electric cables supplying electricity to the electric machine, which provides the necessary speed of its movement. When moving the cutting bar bromaline installed vertically, cuts through the rear vertical slit in the bottom array. Movement bromaline in the beginning of the cycle occurs without interruption from traffic generation to vent. Driver bromaline also located on the trolley. The rubble from cutting slits on the inclined plate is reset to the cloth plate of the conveyor. Return transfer bromaline after cutting back slit the entire length of the lava is carried out immediately and without interruption.

robova machine for cutting through the upper slit

Electric machine for cutting through the upper slit is also mounted on a wheeled trolley, moving through channel guides. Cutting bar bromaline mounted on the guitar (as well as combine augers). The movement of the cutting chain bar is provided by the rotation of the sprocket, which receives in turn the rotation of the cutting part of bromaline on the vertical shaft (Figure 1). Moving bromaline along the lava is provided on the same principle as harvester: the cable is located in the cable-handling vessel, and movement of bromaline is transmitted from the drive sprocket and truck chain.

Cycle extraction begins with the movement of both brummelen upwards along the length of the lava and back without stopping.

Gidroliznaja machine

Gidroliznaja machine is designed for cutting transverse slots in prizaboynom array. Gidroliznaja the machine consists of the working of the chassis (see Figure 4) and separate the Executive instrument (see figure 3).

After the release of electric machines from the bottom of the lava and lowering the cut side of bottom hole array on becoming the plate conveyor creates a free space between the roof bottom space and descended cut bottom array. In this space throughout its depth equal to the width of the plate conveyor, moves the actuating tool guide is aresnal cleaning machine. In the process of entering into the space hydroabrasive jets 22 (see Figure 2) is made by cutting a transverse slit at the top, separated from the rest of the array to its bottom part.

Hydroabrasive jet expire from waterjet cutting head 23 to which the individual tubes is supplied water ultrahigh-pressure (SVD) 24 and abrasive sand 25. Abrasive sand is sucked into the cutting head 23 of the feed hopper for abrasive 28. Moving Executive hydrorise tool deep into free bottom space is on the horizontal guide rails 26. Water ultra high pressure (300 MPa) is supplied to the Executive instrument through line 32 (Fig 3).

At the same time is cutting 6 transverse cracks (see figure 3)that provides high performance cross hydroretake and accordingly high performance cut coal blocks. From the production casing (water source ultra high pressure) to the Executive instrument of ultra high pressure water (SVD) is served by a flexible sleeve length up to 15 meters the flow of water ultrahigh-pressure (200-400 MPa) is used as the working fluid for cutting fossil strata.

Gidroliznaja machine has two variants: in the form of a pump station and gedrose is Italia. In the first embodiment, the water gets ultra-high pressure (typically not more than 200 MPa) in the pump due to the ultra-high compression ratio. On the second version of ultra-high pressure is created in two stages: first in the pump produces the pressure of the emulsion up to 20-30 MPa. Then, this emulsion is fed into the booster, where it is used for movement of the pistons. In the power steering, water undergoes ultra-high compression (up to 300-400 MPa) due to the energy of the emulsion. The spent emulsion is returned to the pump station, the water flow ultra high pressure water through a flexible sleeve is served on the Executive instrument.

When using the steering is achieved significantly higher water pressure and more so the effect of hydroretake array fossil. Therefore this option is considered to be the main one. However, in this case it is necessary to provide for steering the work of one or more pumping stations to generate flow of the emulsion.

The main structural elements of the hydraulic system are hydromultipoles 33 (see Figure 4), in which the compression of the water to the level of 300-400 MPa and issuance of pulses in the receiver 34, which produces a smoothing of the pressure pulses and output in the backbone of a powerful stream of water SVD with smooth ultra-high pressure. At the same time the RA is the work of several multipliers, the number of which is proportional to the required performance booster. In the most common in Western Europe the structures of power steering performance in 20 l/min is supported by 4 gidromanipulyatorov one receiver, where is the smoothing of the pressure pulses to obtain the output of the steering uniform pressure and performance of the water flow high pressure.

To ensure high performance cross hydroretake bottom of the array, you need 40 l/min (at the rate of 6.7 ml/min for cutting the single slit). Therefore, according to the European experience in the design of the steering gidratnoi machine it is planned to use 8 gidromanipulyatorov working on two receivers.

In the design of the hydraulic system also provides a fine filter water 35, control panel and instruments: pressure gauges, flow meters, etc. and the pump 36 to pump water into the system.

The Executive unit gidratnoi machine is stationary at the bottom of the lava and occupies a plot of the length of 10-15 m from the window lava from transport output.

The actuator includes a supply line to the water ultrahigh-pressure 32 (see Figure 2 and Figure 3), located on a horizontal platform 31, and six cutting the nodes transverse abrasive hydroretake together with feed hopper abrasive 28 (see 3).

Each of the 6 gitorious nodes includes:

- abrasive gitorious head 23 that generates hydro-abrasive jet cutter one transverse slit;

- metal supply pipe to the cutting head ultra high pressure water 24;

- the supply pipe to the cutting head 25 of abrasive feed hopper 28;

- guides move horizontally truck with the Executive instrument 26;

- guides move vertically Executive tool 27.

Technical characteristics gidratnoi machine

The steering 40/300

Produced by the pressure of the water flow, MPa - 300.

The water capacity, l/min - 40.

The coefficient multiplier, % - 18,4.

Feed water pressure, MPa to 0.6.

The supply pressure of the emulsion, MPa - 16.

Required flow rate of the supply of emulsion l/min - 730

Dimensions: length - 1.3 m, width - 0.74 m, height of - 0.5 m

The tool transverse hydroretake

The number gitorious nodes 6.

The length of the cutting gap, mm - 2400.

The depth of cutting of the array in one pass, mm - 1200.

The speed of the cutting gap, mm/s - 30-50.

The number of waterjet cutting heads, PCs - 6.

The flow of water in one cylinder, l/min - 6,67.

The abrasive flow rate in one cylinder, kg/min in 1.5.

Pipe diameter water supply ultra-high pressure, mm naru is Ter - 10,

internal - 2.

Allowable particle size, μm - 5.

Common abrasive flow rate, kg/min - 9.

The number of hopper for abrasive - 6.

The capacity of a single feed hopper for abrasive, kg - 100.

Plate conveyor

Plate conveyor is designed to move to a fixed-installed in the lower part of the lava gidratnoi machine separated from the bottom of the array body fossil to cross hydroretake and issuance of lava cut blocks fossil.

Figure 6 presents a view in plan used in the lava to issue blocks of fossil plate conveyor, and figure 5 - cross section. Plate conveyor includes linear and transition sections, videonow and tension head. Widoczna head 73 (Fig) has a bypass unit 61 and the drive sprocket 65 (Fig, 13 and 14) with electric actuators 52 (6 and 14).

Blocks fossil carried on the carrying plate 37, which upon movement based its lugs 43 on the axis with rollers 38, rolling across the bottoms of the pans located on the supporting transverse plate 41. Therefore, the weight of heavy blocks is transmitted through the load-carrying plate, lugs, pins and rollers on the supporting transverse plate 41 and the sill 40.

All of the plates 37 are connected with both sides of the couplers 49 (7), which gives them stability in aparecem direction and protects against the spread. The plates are also connected with each other lap.

Traction chains are driven by rotation of the sprockets, which are equipped with by-pass issued drums and compression heads pipeline.

Cut blocks of fossil work plate conveyor are issued at the loading point lava, where with the help of transshipment platform is loaded into the composition of the transport platforms.

Plate conveyor 7 (see Figure 1) at the end of the cycle moves into the space of the lower Podravka simultaneously along the entire length of the lava with the help of hydraulic jacks powered roof supports.

Plate conveyor includes:

- a closed circular chain of the carrying plate 37 (Fig) with rollers 38, the lugs 43, the blades 44, the axis 46 (see Figure 5, 6, 7 and Fig);

line 59 and the ends of the rod transition 60 sections (see Fig) pipeline, consisting of support bars 40, the reference lateral plates 41, the roller 42, the axes of the roller 47, the transverse plates 48 (see Figure 5);

three panline 39 (see Figure 5), located parallel and close to each other so that their upper part with the guides located above the base plate, and the lower part pan together with the guides are located under the base plate;

- two (left and right) closed circular conveyor chain 45 (see Figure 5) together with the rods 53 (see Fig), traction l is padami 54, reference bends rods 55 (see figures 9 and 10), located respectively in the left and right side panline the rods with the movement of rod 53 for guiding the panline frames in cargo and dry branches (see Fig, Figure 9, Figure 10 and 11);

- leading 65 (see Fig) and idler in the left and right chains with gearboxes and electrical wires 64 (see Fig), the driving and idler sprockets are located in the transition sections of the pipeline; for the passage of the traction chains of the upper branches to the stars in the bearing plates in the transition sections are open (6 and Fig);

two bypass drum 61 (see Fig and Fig).

Technical characteristics of the plate conveyor

Capacity, ton/min - 140.

The maximum permissible value of the load on the rod, t - 2000.

The speed of movement of the carrying plate, m/s - 0.25 in.

Dimensions, m: length - 200; width - 2.5; height of 0.5 in.

The dimensions of the carrying plate, m: width - 2,4; the length of the rod - 0,43.

The diameter of the drums, m - 0,72.

The length of the linear section, m is 1.5.

Electric drive power, kW - 110.

The diameter rollers, cm - 10.

The total weight of the moving parts:

at 1 PM, kg - 356,

all t - 142,4.

The use of plate conveyors for delivering the extracted fossil on the lava to transport formulation allows to increase the performance of the delivery means in lava through which invitatii sliding friction fossil on the bottom of the pans. Use rollers with a diameter of 10 cm can reduce the coefficient of resistance to movement from 0.4 to 0.8 (with the sliding friction of loose material on a metal pan) to 0.01 (friction Catania metal rink with a radius of 5 cm on a metal pan bottom). That is, the resistance force to movement of the load is reduced on average 60 times! Thus, the replacement delivery on fossil lava scraper conveyors on the plate is very progressive!

The proposed construction of a plate-type conveyor is used to move the face of heavy blocks of fossil weighing up to 12 tons of Heavy 12-ton blocks of fossil during transportation are located on the load-carrying plates 2.4 m wide sliding on rollers, which roll on the bottoms of 3 parallel on a base plate of the panline frames scraper conveyors. The weight of the units of fossil passed through rollers and the bottom of the pans on the support plate with channel supports on the sides.

Therefore, the support structure of linear and transition sections are arranged from the powerful support bars 40 and transverse plates 41, perceiving the bulk of the load from moving blocks fossil (see Fig. 5).

Upon delivery of the blocks on fossil lava on the conveyor blocks lie motionless on the carrying plate 37, which all the power of ties the top and passed through its eyes on the axis 46, have seven rollers 38, moving the bottoms of the pans. Thus, the weight of the units of fossil transmitted from the plates through the axis on rollers, and the last transmit this weight through the bottom of the pans 39 on the supporting transverse plate 41.

The movement of the carrying plate with cargo blocks fossil is provided by movement of the blades of these plates under the influence of traction blades, which are equipped with the traction chain.

The top half of the pan is installed at the top of the surface of the base plates, and the bottom half of the pan installed below the base plate. Thanks traction blades traction chains above the plate, the movement of the carrying plates in the cargo branches, and pulling the shoulder blades moving under the plate, the movement of plates in idle branch.

The movement of the carrying plate 37 acquire as a result of interaction of the traction blades 54 (see Figure 10) with the blades 44 of the carrying plate 37, as shown in Fig. Vanes 54 rods under tension of the traction chains force to move the blades of the plates themselves. Rectilinear movement of the rod 53 is provided so that the ends of the rods move along the guides of the trough 57 and 58 (see 11). The resistance rods from Procida is provided by the presence of the reference taps 55 (see Fig 10).

The movement of the traction blades, located on the OS is x, the ends of which are moved along the guides of the pans is provided a centrally located traction chains, driven drive sprocket.

Traction chains are located only in the side panline the rods. Traction chains are driven by the rotation of stars leading head 65 (see Fig), which is located in the head of the transition section and together with his drive is in the space transportation tunnel (Fig).

Transshipment platform

Reloading the platform is designed for overload issued from the stope blocks fossil on vehicle for transportation of mined blocks for transport development.

Transshipment platform is located on transport development in front of the window lava.

Transshipment platform consists of a body 70 (see Fig) and the sliding plate 72. The body has the ability to move (moving delivery conveyor in connection with the beginning of a new cycle) on rollers in a metal guide 71 following the movement of the conveyor, providing the installation of the body opposite the by-pass drum plate conveyor.

Mechanized extension of the bottom of the loading platform in the direction opposite to the movement of goods for transport and development, provides rapid overload of the block t is ansperto vehicle output.

Download blocks fossil in the back of the loading platform is performed using a load-carrying plate pushes the block to the body. This is followed by dumping from the block by means of mechanized vidivici its bottom.

Then you are moving the transport platform along a production of 2.5 m with they are used 68 in order to free up space on the platform for the next block. When the moving platform is dodiga unit of fossil on the platform with the help of skis positioned on the platform and bypass unit pipeline.

Shield support

For fastening of the roof in a mining face as part of the treatment of the mechanized complex uses serial mechanized roof supports having a sufficient width of the enclosed space from the bottom for placement next to the main face electric machines and Executive tool gidratnoi machine.

The treatment performance of the mechanized complex

Due to the fact that the sizes of the extracted blocks fossil form in the direction of podvigina lava 2.4 m, each cycle lava moves to 2.4 m, which is four times more than conventional 0.6 m - width of the harvester. Therefore, the production volume per cycle 4 times more than at the combine faces. So, in the lava length of 200 m during the development of the mo layer is of 3 m production cycle podvigina is

3 m × 1.4 tons/m3× 2.4 m × 200 m = 2016 so

The performance of the mining equipment also depends on the number of cycles produced per day. Time production per day is 18 hours (three shifts of six hours). Therefore, the number of possible cycles per day is determined by the duration of one cycle. The cycle length is determined by the higher of two times: the time podvigina plow bottom at a distance of 2.4 m and a time cut blocks of fossil along the length of the lava and outputting them from the stope.

Focusing on the use of the plow units of the Russian production types WITH or SN, possible chip thickness, and the speed of movement of the plow taken on their technical characteristics: chip thickness 7 cm, and the speed of 1.89 m/s.

Then the number of required chips for podvigina slaughter of 2.4 m is equal to

2.4 m: 0,07 m = 34.

The duration of removal of one chip

200 m: 1.89 m/s = 106 sec = 1,76 minutes

Then the duration of the withdrawal 34 shavings and podvigina plow bottom to 2.4 m equal to

1,76 min × 34 = 59,8 minutes

According to the technical characteristics working feed speed electric machines "Ural 33" - 2,82 m/min, However, given that moving electric machine is mounted on a wheeled cart on channel guides, and cutting slits electric machines production is carried out in a well-pressed array real working feed rate will be no less than 1.5 times more and will be 4.2 m/min With this in mind time of cutting slits will be:

200 m: 4.2 m/min=47,6 minutes

The speed of cutting a transverse slit in the array fossil, on the part of the conveyor opposite the Executive instrument of the transverse hydroretake, estimated at 5 cm/sec. When this cut is made waterjet stream with water flow SVD of 6.7 l/min and a pressure of 300 MPa. Thus on the basis of experimental data, the depth of cutting of the array will be up to 1.2 m in a single pass. Therefore, to complete the cutting of the slit need two passes: forward and reverse. Their execution time is (at speeds of 5 cm/sec)

2 × 240 cm: 5 cm/s = 96 s = 1.5 min.

To increase the performance of cross hydroretake simultaneously cut 6 transverse cracks action 6 gitorious nodes.

After cutting transverse slots and output of them out gitorious heads included in the work of the delivery conveyor and is overload cut blocks on fossil transport platform, and place on the conveyor in front of the tool transverse hydroretake is the next part of the body fossil to be cut off from him the following blocks.

The duration of discharge of each block is determined by the time which agrusti block in the back of the loading platform, equal to

1.6 m: 0.25 m/sec = 6,4 sec,

where 1.6 m - block width, m;

0.25 m/s - the speed of movement of the carrying plate;

and by the time of discharge of the body of the platform equal to

2.4 m: 0.5 m/s = 4.8 seconds,

where 2.4 m - block length;

0.5 m/s - velocity of the transport platform with the release of the body.

Thus, the unloading time of one block of 6.4+4,8=11,2 sec.

Then unload time 6 blocks equal to 11.2×6=67.2 per sec = 1,12 minutes

Then the total time cut 6 blocks and unloading

1.5 min + 1,12 min = 2,62 minutes

Then the total time of the transverse hydroretake and unloading units from the conveyor is

The remaining 60 min - 53,7 min =6,9 min spent on the advancing mechanized roof supports, conveyor and loading platform in position before the beginning of a new cycle.

Thus the total duration of the cycle of production of 1 hour. Therefore, the working time per day production is 18 cycles - one in an hour.

The overall performance of the mining equipment is:

2016 t × 18 = 36308 tons/day.

This value exceeds the average of the existing performance 4 times.

Bibliography

1. Progressive technological scheme of reservoir development in coal mines. IGD them. Ass. M. 1977

1. Cleaning mechanized system for fossil lying Polo is their layers, and large blocks containing sections of powered roof supports, gidratnuju clean machine with the Executive bodies and hydroregime heads, connected via a metal tube on which they are rigidly fixed, with a power line, power steering, plow with two actuators and plate conveyor with load-carrying plates on the rollers, characterized by the presence of the scraper conveyor and hydraulic roof supports Sputnik, structurally interconnected by a hydraulic Jack, shifting, channel guides arranged on both sides of the plate conveyor, the presence of electric cars, moving trucks on channel guides, handlers, while electric machine installed with downhole side of the plate conveyor, has the direction of the cutting bar vertically upward and parallel to the line of the face, and the electric machine installed with goaf side of the plate conveyor, has the direction of the cutting bar in the plane of the layer along the boundary with the roof.

2. The complex according to claim 1, characterized in that the winder has bromaline located on the downhole side of the plate conveyor, located on the downhole side of bromaline, and the winder has bromaline located on the dam side of the plate conveyor is, also located on the goaf side of electric machines.

3. The complex according to claim 1, characterized in that gidroliznaja machine is still at the end of the lava from transport production and action of water jet streams occurs in the transverse plane, perpendicular to the direction of movement of the cut coal body.

4. The complex according to claim 1, characterized in that it contains transshipment platform with mechanically retractable bottom.



 

Same patents:

FIELD: mining.

SUBSTANCE: extracted core of expendable wells helps to define the outline of bed pinching-out at the area, inside the outline the limits of its standard power are registered and on the base of their average position of seam strike the contoured workings are passed. First cuts are located perpendicular to contoured workings upslope or down-dip and till the outline of bed pinching-out and separate the area to paired blocks. Beginning from the end of each paired block and by moving the front line of extraction by reverse movement there are adjacent extraction workings going from the first cuts to both sides with axes shift and parallel to contoured workings; adjacent extraction workings help to extract the bed selectively and are performed with ground and roof breaking, between the paired blocks there remained are solid blocks with width not more than 10% of abutment pressure zone. Each paired block has formed groups of under-goaf and one support solid block. During seam extraction there drilled are prognostic holes and control the degree of rock-bump hazard is performed, if it is revealed the support solid blocks are unloaded.

EFFECT: increase of safety of developing the area of flat and slope seam liable to rock-bumps and reduction of mineral product losses due to involvement of bed pinching-out areas into actual mining.

3 cl, 3 dwg

FIELD: mining.

SUBSTANCE: mining method by large blocks includes advanced formation of bed underbreaking by plough machine with movement of conveyor into it for output of rectangular blocks of mineral cut from long face above it by cutting longitudinal and lateral slots with the use of supports. The output of alluvial mineral from plough operation is done by separate chain-and-flight conveyor. Plough operation in ripping lip is done simultaneously with cutting mineral blocks from the bed upper part by cutting longitudinal and lateral slots by cutting machines and loading of mineral blocks extracted from long face by transfer platform as well as their locomotive haulage from long face to the point of their discharge into grinding chamber.

EFFECT: invention provides multiple increase of mining face productivity in comparison to the existing level, creation of safe by gas factor and ecologically pure by dust production.

6 cl, 15 dwg

FIELD: mining.

SUBSTANCE: method includes driving of development-temporary workings, working off of primordial chambers of tapered section, their filling with curing mixture forming artificial pillars, formation of massive ore pillar between artificial pillars. Rock pressure is reallocated on artificial pillars. Touchdown working is driven along ore pillar symmetry axis by contact with ore deposits in overlying roof rocks. Blasting wells are drilled from it radially within outlines of natural arches so that ends of these wells most accurately form sizes and surface of line of natural arches in compliance with estimated ultimate strength of overlying rock massif. Complete discharge of massive ore pillar is performed by induced caving of roof rock between artificial pillars on chambers expanding upwards, support of artificial pillars by caved rock is provided. Massive ore pillar stocks are developed with support of overlying roof rock by natural arches resting upon artificial pillars and retaining slopes formed near side surfaces of artificial pillars during loading of broken ore.

EFFECT: increasing reliability of rock pressure control and labour safety.

2 cl, 4 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to mining and may be used in ore dressing. Proposed complex comprises receiving hopper, crushing and screening unit, assembly to feed ore to separation, ore control station, ore lump separators, concentrate and reject discharge conveyors arranged in underground openings. Assemblies feeding ore to separation and X-ray-type separators are arranged on two levels in long openings communicated by box holes to accumulate and feed ore to separators by gates arranged at their outlets. Said box holes are located at 5-7 mm from each other to feature diameter of 1.0-1.5 mm. Assembly feeding ore to separation represents combination of openings, each being 120-40 0m-long and having 2.5-3 m-diameter, and connected with crushing and screening assembly to allow every opening to feed ore of particular size grade to box hole. Every separator comprises, at least, one additional channel for cleaning rejects after separation of concentrate in main channel. Conveyor belts of said main and additional channels are located one above the other. Openings accommodating said assembly feeding ore to separation and separators are spaced apart for 15-20 m along vertical. X-ray-type separator channel comprises, at least, one x-ray useful component content analyser connected with separation device made up of, at least, one pneumatic blowout nozzle. Every aforesaid assembly is equipped with conveyor provided with unloading device driven along openings length. Crushing and screening unit allows producing four flows of ore sized to (-300+120), (-120+50), (-50+15), (-15+0) mm, with (-15+0) mm-ore directed to concentrate discharge conveyor, the remaining flows being used for filling box holes.

EFFECT: higher efficiency of separation and quality of concentrate, reduced costs.

8 cl, 3 dwg

FIELD: mining.

SUBSTANCE: method to increase stability of a ceiling in downward slicing development of a deposit with backfilling includes serial tunnelling and backfilling of parallel mines - stope entries, leaving ore pillars with width equal to one, two or three spans of mines, backfilling of mines with a concrete mix, and after backfilling hardens, ore pillars left between concrete strips are mined. At the same time the vault of stope entries is arranged as deep, besides, ore pillars are left in the roof between concrete backfilling of adjacent stope entries.

EFFECT: higher stability of a mine ceiling.

4 dwg

FIELD: mining.

SUBSTANCE: extraction sections or blocks are mined with vertical cuts including two vertical layers of various thickness, the internal one of which is mined by means of drilling method of large-diameter scavenger wells and external one is not mined. In order to ensure safe labour conditions at upper drilling level and uniform output of mineral deposit extracted during large-diameter well drilling, drilling of those wells is performed by shrinking of broken mine rock in them. If the deposit is represented with a bench of conformable beds, the cutting height is accepted equal to total thickness of all beds of that bench, including intermediate rocks. Drilling of scavenger wells is performed throughout the cutting height with shrinkage of broken mine rock in them, and separation of mineral deposit and hollow rock is performed at the stage of general release of racks by means of selective bed-by-bed supply.

EFFECT: creation of safe conditions from the point of view of hydrogeology for high-efficiency development of reserves of extraction sections or blocks outlined with natural or artificial barrier or inter-block pillars.

3 cl, 2 dwg

FIELD: mining.

SUBSTANCE: weakening a spring of natural balance at both sides of the block and damaging a key stone is done simultaneously by exploding rows of parallel wells drilled at the borders with interchamber sight pillars and along the axial line of the stope, in sections length of which is equal to the thickness of the damaged layer. Weakening of the spring at both sides of the block and damaging of the key stone is done by sectional explosion of clusters of parallel adjacent wells: linear ones at borders with interchamber sight pillars and bulk ones along the axial line of the block. The spring at both sides of the block is weakened ahead of erection of artificial interchamber sight pillars.

EFFECT: improved efficiency and safety of production works.

3 cl, 4 dwg

FIELD: mining.

SUBSTANCE: when developing mineral deposits in the form of ore bodies, ore zones are divided along the depth into stories and levels and are mined top-down with sloughing of the above rock massif or filling of the mined space with foreign ground material with lower strength and resistance of rock massif. Ore bodies are mined bottom-up with a layer method with the limited minable width of the layer using the bore hole method from drilling crosscuts with application of drilling mechanisms and conveyor transportation of ore material. Parameters of the broken layer comply with receiving capacity of conveyors that supply the material into the ore chute, and from there into the transport lifting vessel. Mining is carried out starting from the hanging wall of the deposit, and gradually, layer by layer is mined towards the underwall of the deposit. To collect the material sliding off the conveyor flight and during mining of intermediate layers between the extraction ones along the height and ground later, trenches are developed at the bottom. From the trenches the material is sent to a common conveyor via chutes.

EFFECT: complete mining of the deposit, prevention of weakening in the surrounding massif of the mined space.

16 dwg

FIELD: mining.

SUBSTANCE: air supplying gate and the main air gate pass along opposite boundaries of mine field so that they run ahead of extraction front through the length equal to distance between axes of the rooms. At that, rooms have the length equal to width of mine field and are located between air supplying gate and ventilation air gate. Fresh air is supplied through the tunnel located in front of extraction front. At that, return ventilation air is removed along auxiliary air gate.

EFFECT: improving concentration of mining operations, reducing volumes of preparatory mine work, and decreasing air leaks through the worked-out area.

1 dwg

FIELD: mining.

SUBSTANCE: method consists in maintaining the stable state of worked-out area with inter-chamber support pillars; at that, sizes of inter-chamber support pillars are determined from actual pressure of rocks on them, which are located inside the natural arch in its final position, and the pillar located at the joint of natural arches is determined considering the pressure on abutments of arches of those rocks which are located above the outlines of natural arches.

EFFECT: reducing the losses of developed mineral resources and improving the safety of mining operations.

2 dwg

FIELD: mining.

SUBSTANCE: method for coal extraction using dynamic plough involves cutting of deep advance slots in formation mass at the roof, soil and middle, working face, and further destruction of mass in two consoles weakened with slots are performed by shearing; at that, width of cut slot and cutting depth of consoles is set and adjusted along the strike due to turning angle relative to working face of actuator with cutting tool the cutters of which describe ellipsis trajectory, and shearing force is created due to external taper surface of actuator housing when the plough is being moved along the working face.

EFFECT: improvement of coal extraction controllability on coal formations with complex structure; increase in depth of removed chips.

FIELD: mining.

SUBSTANCE: production planer for underground production comprises a body, planing cutters, at the same time it is equipped with a receptacle element to receive tractive sleds connected to the planer's chain, which is restricted with counter-support surfaces facing towards the direction of motion, interacting with the support surfaces at tractive sleds. The counter-support surfaces include pressing elements preferably arranged with the possibility of replacement for interaction with a damping device built into the tractive sleds.

EFFECT: extended service life of the production planer.

15 cl, 5 dwg

FIELD: machine building.

SUBSTANCE: here is disclosed case of plough for reception of chain wheel of plough with mounting plate attached to side cheek of machine frame of face conveyer by means of connecting elements. A wall of the case is spaced from the mounting plate. Chain wheel of the plough is positioned in the case of the plough between the mounting plate and the wall of the case. The chain wheel is set without turning on a shaft of the chain wheel. The shaft is mounted on both sides in the case of the plough by means of bearings. The driving station with mounted case of the plough forms a compact case of the plough with stable transfer of torque to the machine frame; it also directs the chain of the plough in a region of machine frame with insignificant side offset from its side cheek. Also, for transfer of torque the case of the plough is made in such a way, that mounting plate is inserted and is secured with geometrical lock into a receiving recession in the side cheek of the machine frame. The mounting plate is equipped with a built-in bearing receiving element for a bearing of the shaft of the chain wheel; the receiving element is positioned from the side of the machine frame.

EFFECT: stable transfer of torque on machine frame; direction of plough chain in region of machine frame with insignificant side offset relative to its side cheek.

19 cl, 5 dwg

FIELD: mining.

SUBSTANCE: invention refers to mining industry, and namely to automatic control devices of drives of plough devices, as well as to control method of drives of plough devices. Plough device includes a movable plough with reverse direction by means of the plough chain and moved in back-and-forth direction between limit stops of the plough, two chain drives, measurement system of the plough travel and motor control device. Each chain drive has a drive motor with variable speed, transfer mechanism and the chain sprocket of the plough, which is located in engagement with links of the plough chain. Motor control device at programme or position control supplies control parametres for changing the rotation speed of drive motors to change the plough speed, and to it there attached is control module with automatic load balancing adjustment between drive motors of chain drives. In addition, plough device includes control module which switches off the control module of automatic load balancing by means of position control, with programme control and/or by means of parametre control, or modifies the operating mode of control module.

EFFECT: preventing excess wear of plough chains.

19 cl, 2 dwg

FIELD: mechanics, mining.

SUBSTANCE: invention relates to mining, particularly, to coal ploughs. Plough for underground mineral resources mining comprises plough casing moving along plough guide. The plough casing incorporates, at least, one bearing element accommodating a skid. Latter features, at least, one bearing surface on its lower side that slides, in the skid operating position, on over the guiding rail of the plough guide. The skid lower side features, at least, one wearable insert.

EFFECT: longer life, lower costs of production and operation.

13 cl, 5 dwg

The invention relates to mining tool and can be used in plow systems used in coal industry

FIELD: mechanics, mining.

SUBSTANCE: invention relates to mining, particularly, to coal ploughs. Plough for underground mineral resources mining comprises plough casing moving along plough guide. The plough casing incorporates, at least, one bearing element accommodating a skid. Latter features, at least, one bearing surface on its lower side that slides, in the skid operating position, on over the guiding rail of the plough guide. The skid lower side features, at least, one wearable insert.

EFFECT: longer life, lower costs of production and operation.

13 cl, 5 dwg

FIELD: mining.

SUBSTANCE: invention refers to mining industry, and namely to automatic control devices of drives of plough devices, as well as to control method of drives of plough devices. Plough device includes a movable plough with reverse direction by means of the plough chain and moved in back-and-forth direction between limit stops of the plough, two chain drives, measurement system of the plough travel and motor control device. Each chain drive has a drive motor with variable speed, transfer mechanism and the chain sprocket of the plough, which is located in engagement with links of the plough chain. Motor control device at programme or position control supplies control parametres for changing the rotation speed of drive motors to change the plough speed, and to it there attached is control module with automatic load balancing adjustment between drive motors of chain drives. In addition, plough device includes control module which switches off the control module of automatic load balancing by means of position control, with programme control and/or by means of parametre control, or modifies the operating mode of control module.

EFFECT: preventing excess wear of plough chains.

19 cl, 2 dwg

FIELD: machine building.

SUBSTANCE: here is disclosed case of plough for reception of chain wheel of plough with mounting plate attached to side cheek of machine frame of face conveyer by means of connecting elements. A wall of the case is spaced from the mounting plate. Chain wheel of the plough is positioned in the case of the plough between the mounting plate and the wall of the case. The chain wheel is set without turning on a shaft of the chain wheel. The shaft is mounted on both sides in the case of the plough by means of bearings. The driving station with mounted case of the plough forms a compact case of the plough with stable transfer of torque to the machine frame; it also directs the chain of the plough in a region of machine frame with insignificant side offset from its side cheek. Also, for transfer of torque the case of the plough is made in such a way, that mounting plate is inserted and is secured with geometrical lock into a receiving recession in the side cheek of the machine frame. The mounting plate is equipped with a built-in bearing receiving element for a bearing of the shaft of the chain wheel; the receiving element is positioned from the side of the machine frame.

EFFECT: stable transfer of torque on machine frame; direction of plough chain in region of machine frame with insignificant side offset relative to its side cheek.

19 cl, 5 dwg

FIELD: mining.

SUBSTANCE: production planer for underground production comprises a body, planing cutters, at the same time it is equipped with a receptacle element to receive tractive sleds connected to the planer's chain, which is restricted with counter-support surfaces facing towards the direction of motion, interacting with the support surfaces at tractive sleds. The counter-support surfaces include pressing elements preferably arranged with the possibility of replacement for interaction with a damping device built into the tractive sleds.

EFFECT: extended service life of the production planer.

15 cl, 5 dwg

Up!