A method for design and construction of mining roadway in coal mine

Abstract

The invention discloses a method for designing and constructing a mining roadway in a coal mine, which includes step 1, constructing a section of mining roadway with a negative slope along the pseudo-inclination of the coal seam at the opening of the coal meeting point of the stone gate of the mining area of ​​the air return roadway and the transportation roadway, when the elevation of the mining roadway drops Stop excavation when the elevation of the designed leveling point is reached; step 2, change the construction orientation of the mining roadway and construct the mining roadway along the coal seam to the designed upper (lower) opening of the cut; step 3, construct the cut to form an independent return air The coal mining face of the system; step 4, stop the mining work of the coal mining face when the coal mining face is recovered to the position connecting the return air roadway level point and the transport roadway level point. In the present invention, because the coal mining face and the Shimen roadway in the mining area are staggered by a certain distance, the Shimen roadway in the mining area in one section is only affected by the mining operation of the coal mining face once, and the time when the coal mining face in the next section is mined is avoided. Cause the impact of secondary mining, solve the problems of difficult support and frequent maintenance of Shimen roadway in the mining area, and increase the service life of Shimen in the mining area.

Description

technical field [0001] The invention belongs to a coal mine roadway design and construction method, in particular to a coal mine mining roadway design and construction method. Background technique [0002] The impact of repeated mining in the mining face has always been the main factor causing difficulty in supporting and frequent maintenance of Shimen roadway in the mining area. The Shimen roadway in the mining area is repeatedly affected by the mining stress, the roof of the surrounding rock is subsidence and unstable, the convergence deformation of the two sides is serious, and the ground drum phenomenon is prominent, which seriously affects the use function of the Shimen roadway in the mining area, resulting in frequent maintenance of the Shimen roadway in the mining area. The deformation and instability of the Shimen roadway in the mining area not only seriously affects the mine production links such as transportation and pedestrian safety, but also requires a lot of ma...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: to provide a design and construction method for mining roadways in coal mines, reduce the impact of repeated mining on the Shimen roadway in the mining area, and solve the problems of difficult support and frequent maintenance of the Shimen roadway in the mining area

Images