SU1408070A1 - Method of mining inter-layer coal mass - Google Patents

Abstract

The invention relates to mining promethe and M. b. used in the development of powerful flat seams. The purpose of the invention is to increase the production of cleaning faces at the roof and soil of the reservoir and reduce the labor intensity for the preparation of interlayer l / thickness (MCT) for excavation. On the excavation machine (M) 1 install the monitor 2 and the hose 3 is connected to the pump. In operation M 1, the MCT 4 coal from MCT 6 is cut upwards from the bottom up by directing to the MCT 6 following the passage of the executive upper screw 7 M 1 of the high pressure water jet 8 from the monitor 2 at an angle of 40-65 °; to the horizon with touching the array at the level of the sliding tops 9. As M 1 moves, slot 10 is cut through, cut off MCT 6 strip MCT 4. Release MCT 4 onto the seam soil between screw 7 and lower screw M 1. Coal cut off from the array 6 and discharged from under the flexible dividing overlap between the screws, is loaded together with coal, broken M 1 onto the front conveyor I. Immediately after the strip MCT 4 is separated from the MCT 6, retractable tops 9 are pushed against the wall formed 9 dredging the coal from bottom to top, M 1 starts moving from top to bottom. 1 h. the item of f-ly, 4 ill. (L from 4 to 00 about Fig 1

Description

The invention relates to the mining industry and can be used in the development of thick flat seams.

The purpose of the invention is to increase the productivity of clearing faces at the roof and the soil of the reservoir and reduce the labor intensity for preparing the interlayer thickness for excavation.

FIG. Figure 1 shows a section of the clearing bottom of the undercut formation in the position where a strip of coal is cut off from the interlayer massif with a thin high-pressure water jet; in fig. 2 - section of the clearing flank, when the interlayer thick coal is cut off from its massif and the retractable visors are pushed all the way into the wall of the flank; in fig. 3 - section, when the excavation cycle is completed, and the lining and conveyor pushed to the wall of the bottom; in fig. 4 shows section A-A in FIG. one.

The method is carried out as follows.

A monitor 2 with a nozzle of 3-6 mm is installed on the excavation masonry 1 and connected via a flexible hose 3 to a pump that generates a pressure of 30-40 MHA; in this case, the flexible hose is located in the groove of the flat-laying machine in one bag with a power cable.

For example, during operation of the excavating machine for coal mining and moving upwards from the bottom, the strip of interlayer thickness of coal 4, equal to the working width of the excavating machine 5, is cut off from the array of interlayer thickness 6 as follows.

Following the passage of the upper actuator (screw) 7 of the excavation machine, the high-pressure water jet 8 from the monitor is directed at an angle of 40-65 ° to the horizon at the interlayer of the coal mass with the array touched at the level of the sliding upper 9, and as the excavation machine moves, it cuts through slot 10, cutting off the interlayer layer of coal 4 from its array. A strip of coal 4 cut off from the massif of interlayer thickness 6, is destroyed in front of the canopies of the upper 9 and conveyor 11 on the formation soil between the upper actuating member 7 and the lower 12 of the notch masking 1.

The strip of the interlayer layer from its massif is cut off, directing a high pressure jet towards the array at an angle of 40-65 ° to the horizon, since at an angle less than 40 °, the cut off from the interlayer massif is clamped by the weight of the rocks above the flexible dividing overlap, and at angles greater than 65 ° The dynamic loads on the flexible overlap and retractable visors of the sections increase dramatically as the distribution component of the dynamic impact forces approaches the visors of the support sections. Coal, cut off from the interlayer massif and discharged from under the flexible dividing overlap between screws 7 and 12, is loaded by them together with coal, which was beaten off by the excavating machine, onto the conveyor 11. Immediately after separating the strip of coal 4 from

13 retractable visors 9 are pushed against the wall formed at the bottom 13 of the array of the interlayer stratum 9. Having completed the excavation of the coal strip and the interlayer thickness by the passage of the excavator from the bottom up, the excavation machine begins to move downward from the clearing side down, and the coal is removed from the track by the executive bodies and gradually, as the coal is stripped, the lateral conveyor 11 is pushed against the wall of the clearing face 13 and the fur sections are moved towards it. complex 14.

After the excavation machine approaches the conveyor drift and the movement of the conveyor and mechanical supports throughout the lava is completed, the excavation process is repeated.

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Claims (2)

Invention Formula five . Method of excavation of coal interlayer stratum, including preparation of interlayer coal stratum for dredging in the clearing face at the crOE) or formation, construction of a flexible separating block, opening the interlayer stratum of the coal from the clearing bottom of the slit layer of the stratum by trimming the excavating machine, release and loading. coal interlayer on the laval conveyor by the excavating machine, characterized in that increase the performance of sewage treatment plants bottoming the roof and soil of the reservoir and reducing labor input for preparing the interlayer to excavation, excavating the interlayer of coal is produced by a monitor that is installed on the excavating machine, simultaneously with the excavation of the coal strip of the undercut layer of the coal seam, and the coal of the interlayer thick layer is cut off from its core array at an angle of 40-65 ° to the horizon with a high-pressure water jet and release 5 cut the coal between the screws of the excavation machine. 2. A method according to claim 1, characterized in that the loading of coal of the interlayer thickness onto the conveyor is carried out simultaneously with the broken coal of the substep layer. FIG. four