Balanced excavation method for room and pillar mining method

Abstract

The invention discloses an excavation method, comprising the following steps: calculating tunneling quantities for advancing a branch roadway; calculating tunneling time according to the tunneling quantities; calculating recovery quantities for a branch roadway; calculating recovery time according to the recovery quantities; and determining the work cycle of a continuous coal cutter and the work cycle of a rock bolting machine according to the tunneling time and the recovery time so as to ensure that the continuous coal cutter and the rock bolting machine work synchronously. By adopting the technical scheme disclosed by the invention, the problems that the capability of the continuous coal cutter and the capability of the rock bolting machine are mismatched and particularly the difference between the capability of the continuous coal cutter and the capability of the rock bolting machine is larger under thinner coal seam conditions are solved, and the capabilities of the continuous coal cutter and the rock bolting machine can be fully exerted.

Description

technical field [0001] The invention relates to the field of coal mining, in particular to a balanced mining method for a room-and-pillar coal mining method. Background technique [0002] The layout of the coal mining face is basically as follows: figure 1 Shown: [0003] 1-1 is the mine auxiliary transportation alley, which transports personnel and equipment materials, etc.; 1-2 is the mine rubber transportation alley, which transports the coal produced from the working face to the ground; 1-3 is the mine return air alley, which transports the working The dirty wind from the wind-using place is discharged to the ground. [0004] Working face trough and trough connection lane: 2-1 is the auxiliary transport trough of the continuous mining face (also called 1# trough); 2-2 is the continuous mining face rubber transport trough (also called No. 2 trough ); 2-3 is the continuous mining work return air channel (also called 3# channel), its use is corresponding to the mine main...

AI Technical Summary

Problems solved by technology

[0013] In order to ensure the quality of the support, it is required that the roadway just excavated by the continuous shearer must be supported immediately to prevent the roof of the roadway from detaching. To make full use of equipment capabilities, continuous mining machines, battery coal trucks, feeder crushers, belt conveyors, etc. are often in a waiting state, and the efficiency of machines and personnel is not high

[0014] 2. Since there is no supporting task in the coal mining room, the bolters are all in the idle state, and the ability of the bolters is also not fully utilized.

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