Method for multi-roadway layout of long wall working face of thick coal seam

Abstract

The invention relates to the field of coal mining, in particular to a method for multi-roadway layout of a long wall working face of a thick coal seam. The method for the multi-roadway layout of the long wall working face of the thick coal seam solves the problem that roadways of the multi-roadway layout system of a conventional long wall working face are all tunneled along a floor, a lower section air roadway is affected by repeated mining, the maintenance time is long, and the maintenance is difficult. The method for the multi-roadway layout of the long wall working face of the thick coal seam comprises the following steps that step 1, four roadways of a first working face are parallelly tunneled, a first auxiliary transport roadway and a first main transport roadway are arranged along the floor, and a first main return air roadway and a first auxiliary return air roadway are arranged along a roof; step 2, the first working face is mined; step 3, after mining of the first working face is completed for more than half a year, a second auxiliary transport roadway of a second working face parallelly tunnels four roadways of the second working face in a goaf of the first working face;step 4, coal of the second working face is mined; and step 5, in the way, subsequent working faces are arranged in sequence for mining, a layout mode the same as that of the front working face is adopted, and stoping is carried out in sequence. The method for the multi-roadway layout of the long wall working face of the thick coal seam has better economy and higher security.

Description

technical field [0001] The invention relates to the field of coal mining, in particular to a multi-lane layout method for longwall working faces in thick coal seams. Background technique [0002] In our country, the recovery roadway of the longwall coal mining face (including the transportation roadway and the air return roadway of the working face) is generally arranged in a single roadway. However, when the gas content in the coal seam is large, the water inflow in the mining area is large, or the single-lane layout cannot meet the requirements due to the requirements of excavation, ventilation, and transportation, etc., it is necessary to adopt double-lane or multi-lane layouts. Lane and multi-lane arrangement. [0003] The main advantages of double-lane or multi-lane layout include: (1) It is easy to ventilate in the excavation; (2) There are two exits in and out of the excavation surface, and there is also a disaster escape exit in mining, which is safe; (4) Easy drai...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems that the roadways of the multi-lane layout system of the conventional longwall working face are all driven along the floor, the air roadway in the lower section is affected by repeated mining, the maintenance time is long, the maintenance is difficult, and the loss of coal pillars in the section is large. A multi-lane layout method for longwall working face in thick coal seam

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