Method of development of powerful steeply inclined coal bed in stripes downwards

FIELD: mining.

SUBSTANCE: method of development comprises preparing of the extraction column carrying out conveyor and ventilation drifts, preparing of winning band by performing off end and near slopes along the downwards line at the soil of layer from the conveyor to the ventilation drift on both sides of the band, performing the mounting chamber at the ventilation drift, mounting of sections of aggregated timber in it, coal extraction with low-inclined layers by the shearer of front action and transportation of coal along the bottom hole of self-propelled car to off end slope , in inclination of the extracted layer towards the near slope, or to the near coal chute slope, in inclination of the extracted layer towards the off end slope, change in the direction of inclination of the layer and turn of the combine in the chamber, which is carried out outside of the winning band. And the self-propelled car is equipped with an automated control system. At that from the overlap of each section of the aggregated timber towards the soil layer a signal is given, corresponding to the order number of the timber section, this signal is received by the receiving device mounted on the self-propelled car, and is transmitted to the automated control system. After changing the direction of inclination of the layer setting up of the control system of the self-propelled car is carried out, which, depending on the combination of numbers of the received signals and the degree of loading the body, ensures actuation of actuators of the self-propelled car - movement back and forth, drive-brake, loading-unloading, stop.

EFFECT: increased efficiency and safety of the development of powerful steeply inclined layers due to organisation of the automated control system of the self-propelled car for transporting loosened coal.

3 dwg

 

The present invention relates to mining, in particular to the development of powerful steeply inclined coal seams in flat layers to shield the development system.

There is a method of developing a powerful steeply inclined coal seam stripes on the decline, including the preparation of the mining of the pillar holding conveyor and ventilation drifts, the preparation of the mining strip holding the flank and the middle rays along the line of fall of the soil layer from the conveyor to the ventilation drift on both sides of the strip, for mounting the camera in the ventilation drift, installation of partitions coupled to the support, mechanized excavation of coal and forced transport of coal along the stope [1]. The disadvantage of analogue is that the forced transport of coal along the stope screw carried out by the Executive bodies of packaged shields are installed along the stope, sequentially from one to another. However, the performance stope cannot be higher than the performance of one screw Executive body for the transportation of extracted coal, which reduces the efficiency of the development of a coal seam.

As the prototype accepted way to develop powerful steeply inclined coal seam stripes-dip switch is in store preparation, excavation and post-holding conveyor and ventilation drifts, the preparation of the mining strip holding the flank and the middle rays along the line of fall of the soil layer from the conveyor to the ventilation drift on both sides of the strip, for mounting the camera in the ventilation drift, installation of partitions coupled to the support, the notch coal flat layers clearing harvester front steps, forced transport of coal along the face of a self-propelled carriage on the flank slope, if the slope of the removable layer in the middle of the slope, or the middle opesuse scat, when the slope of the removable layer in the direction of the flank of the slope, changing the direction of the bias layer and the reversal of the harvester in the chamber, which is held outside the excavation of the strip [2]. The disadvantage of the prototype is that when developing a powerful reservoir outcrop of the coal of the array at a height considerably greater than the height of the self-propelled carriage, and the array as a failover layers along the line of fall of the reservoir, has a tendency to hover over the ground of the developed layer. The control cab self-propelled carriage is in the front right of the longitudinal axis of the car. During transportation of extracted coal along the stope to reduce the likelihood of injuries to the driver of the self-propelled carriage, he must be from the shields, and not from the coal of the array, in order to avoid to be trauma is ofanim pulled from the array chunks of coal. But then, after turning the car, its cabin is behind the driver will not be visible trajectory that by itself is not effective and dangerous. This drawback reduces the effectiveness and safety of the development of powerful steeply inclined coal seam stripes on the decline.

The aim of the invention is to improve the efficiency and security developments powerful steeply inclined coal seam stripes on the decline due to partial withdrawal of people from the zone of doing cleaning work and organization of the automated control system of a self-propelled carriage.

This objective is achieved in that in the method of developing a powerful steeply inclined coal seam stripes on the decline, including the preparation of the mining of the pillar holding conveyor and ventilation drifts, the preparation of the mining strip holding the flank and the middle rays along the line of fall of the soil layer from the conveyor to the ventilation drift on both sides of the strip, for mounting the camera in the ventilation drift, installation of partitions coupled to the support, the notch coal flat layers clearing harvester front steps, forced transport of coal along the face of a self-propelled carriage on the flank slope, with the slope of the removable layer in the middle of the slope, or the middle opesuse scat, when the slope is animemanga layer in the direction of the flank of the slope, changing the direction of the layer tilt and turn combine in camera, which is held outside the excavation zone, in accordance with the technical solution, the transport of coal along the stope carry out a self-propelled carriage with an automated control system, with overlap each section is coupled to a support in the direction of the soil layer signal corresponding to the ordinal number of the shields, this signal is received by the receiving device mounted on a moving carriage, and passed into the automated control system, after changing the direction of inclination of the layer carry out the adjustment of the control system self-propelled carriage, which, depending on combinations of numbers of the received signals and the degree of loading of the body enables the Executive mechanisms of self - propelled car back and forth motion, acceleration-deceleration, loading-unloading, stop.

The essence of the proposed method is illustrated by drawings.

1 shows a diagram of the preparation and mining of a band falling flat layers; figure 2 - scheme of arrangement of equipment and devices in mounting the camera (view); figure 3 - the same, but in a mining face in the middle of the floor height.

The method can be implemented as follows.

Long extraction column prepared by carrying out the envelopes the cluster 1 and vent 2 drifts. Excavation strip framing holding the far border post (on the flank) uglespusknoj slope 3 in soil formation and in the near-border - uglespusknoj Stingray 4 in a similar way. The ventilation drift 2 construct the mounting chamber 5 in which is mounted the partition panel is coupled to a lining 6 stope powerful steeply inclined strata.

From the side of the working space on the downhole edge of the rotary fencing shield symmetrically to its longitudinal axis has two emitter 7 and 8 are configured on different frequency, different for each of the shields directed towards the soil working layer.

In the workspace stope mount Shearer 9 front steps with a cutting Executive body, made in the form of horizontally oriented drum, for example of the type of JOY 17CM, and self-propelled carriage 10, for example VC. On loading the boom of the Shearer 9 set the emitter 11 directed towards the soil layer, and over the cab self-propelled carriage 10 mounted device receiving signals from the emitters of shields, of the Shearer and the end of the emitter 12 that is installed on the border uglespusknoj the pitch with a working layer. Self-propelled carriage 10 can operate in manual control mode, i.e. under the control of the operator, and AVT is automated.

In the initial position of the section 6 is installed in-line, retractable canopies extended until it touches the roof of the reservoir. Emitters are turned on and the signals, limiting the operating area of the self-propelled carriage. While the emitters 7 and 8, each of the shields together to form a possible trajectory of the car, which at the initial stage is horizontal (see figure 1) and rectilinear in plan (see figure 2), the emitter 11 indicates the area of loading the broken coal in the car, and the radiator 12 to the unloading area of the car.

When the notch in the soil mounting chamber Shearer forms Shearer road, which is about one and a half times wider roads necessary to pass the self-propelled carriage. While the straightness of the soil layer (as in profile and plan) is violated, and the possible trajectory of the car, indicated by the emitters 7 and 8 of each section before advancing shields, remains straight. Due to the greater width of the harvester self-propelled road carriage moves on Shearer road, but in accordance with a possible trajectory indicated by the radiators 7, 8.

After loading the car repulsed by coal, the control system sends a signal to the driver of the Shearer about filling out the car body and, after stopping the operation of the harvester, signal the beginning of the movement towards uglespusknoj of the slope. The movement in the rut occurs in accordance with the trajectory, indicated by the radiators 7, 8 preset speed.

The border strip mining with prespectrum slope management system car picks up the signal from the end of the emitter 12 and sends a signal "stop", and after a stop - signal "unloading". The car performs unloading his body towards uglespusknoj of the slope.

At the end of the discharge control system sends a signal of the movement of the carriage to Oistamo the harvester. The carriage moves along the path indicated by the emitters 8, 7 in the opposite direction until such time as the control system does not receive a signal from the transducer 11, is installed on the harvester, to signal "stop" and its transfer to the operator of the combine to indicate that the readiness of the car to load repulsed by coal.

After shifting part of the shields, the possible trajectory of the car, indicated by the radiators 7, 8, will receive a small curvature, both in a horizontal and in a vertical plane. This is due to the angle of occurrence are working layer. As testing of further layers of the area of curvature of the trajectory of the self-propelled carriage will move in the direction uglespusknoj of the slope, on the pairing unloaded the car. However, regardless of the location of the zone of curvature of the trajectory, the car is described by the program until, when the and will need to change opesuse the slope.

To change uglespusknoj slope, perform camera reversal, as described in the prototype [2], unfold it shearers and change it in some places with a self-propelled carriage. The self-propelled carriage is carried out in manual mode, i.e. the car is controlled by the driver. Then the harvester and wagon driven by Shearer road to uglespusknoj the slope on the opposite side of strip mining.

During the execution of works on carrying out the camera turn carry out the adjustment of the control system of a self-propelled carriage and move the emitter terminal 12 to mate with the opposite prespectrum slope.

Further work equipment for the extraction of coal in flat layers is the same, but now in the zone of curvature of the projection of the trajectory of movement of the carriage on the vertical plane will have a change of angle from positive to negative, i.e. the first carriage will move up, and after curving downward; the same applies to the projection of the trajectory on the horizontal plane (see figure 1 and figure 3). Moving in accordance with the trajectory indicated by the emitters 7 and 8, the carriage will always be within the width of the "harvester road"that will eliminate occasional trips outside the possible trajectories, i.e. will reduce the likelihood of wosn is knowone emergency situations, associated with the human factor.

However, if a delay in shifting any shields, possible trajectory indicated by the emitters 7 and 8 shields, will fail because the emitted signal with the "late" sections will not be in the receiving device of the control system of a self-propelled carriage. In this case, the control system sends a signal "stop", informing, for example, the operator of the harvester on an emergency stop of the self-propelled carriage associated with the discontinuity of possible trajectories, and the location of the car in the layer. After restoring the continuity of the possible paths of movement of the carriage equipment resume.

Organization of work of the self-propelled carriage with an automated control system showed the following features of the way that distinguishes him from the prototype and analogues:

- due to the work of self-propelled car in automatic control mode no longer required reversal of the self-propelled car when you change the direction of transportation of rock mass;

- eliminated the need for a permanent role of operator self-propelled carriage during transport of the rock mass along the stope;

- decreased the probability of an accident during transport of the rock mass, as it reduced the influence of the human factor.

The listed features is vidualistic about improving efficiency and security developments powerful steeply inclined coal seam stripes-dip i.e. what are the goals of the invention.

Sources of information

1. How to develop powerful steeply inclined coal seam stripes on the decline. RF patent №2360115, publ. 27.06.2009, bull. No. 18 (analog).

2. How to develop powerful steeply inclined coal seam stripes on the decline. RF patent №2461713, publ. 20.09.2011, bull. No. 26 (prototype).

How to develop powerful steeply inclined coal seam stripes on the decline, including the preparation of the mining of the pillar holding conveyor and ventilation drifts, the preparation of the mining strip holding the flank and the middle rays along the line of fall of the soil layer from the conveyor to the ventilation drift on both sides of the strip, for mounting the camera in the ventilation drift, installation of partitions coupled to the support, the notch coal flat layers clearing harvester front steps, forced transport of coal along the face of a self-propelled carriage on the flank slope, with the slope of the removable layer in the middle of the slope, or the middle opesuse the slope, with the slope of the removable layer in the direction of the flank pitch, changing the direction of the layer tilt and turn combine in camera, which is held outside the excavation of the strip, characterized in that the transport of coal along the stope carry out a self-propelled carriage with automatiser the private control system, with overlap each section is coupled to a support in the direction of the soil layer signal corresponding to the ordinal number of the shields, this signal is received by the receiving device mounted on a moving carriage, and passed into the automated control system, after changing the direction of inclination of the layer carry out the adjustment of the control system self-propelled carriage, which, depending on combinations of numbers of the received signals and the degree of loading of the body enables the Executive mechanisms of self - propelled car back and forth motion, acceleration-deceleration, loading-unloading, stop.



 

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2 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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