Roadway structure of a coal mine system

Abstract

The invention discloses a roadway structure of a coal mine system. The roadway structure of the coal mine system comprises five parallel system roadways all located between two coal seams. The five system roadways are the track roadway, the belt conveyer roadway, the coal base plate air returning roadway, the coal top plate air returning roadway and the gangue belt conveyer system roadway. At coal face gateways in coal pillars of the track roadway, the belt conveyer roadway, the coal base plate air returning roadway and the gangue belt conveyer system roadway, stone drifts are used for replacing coal roadways; the coal face gateway of the track roadway is directly connected with the track roadway; the coal face gateway of the belt conveyer roadway is connected with the belt conveyer roadway through a coal bin; and the coal face gateway of the coal base plate air returning roadway is connected with the coal base plate air returning roadway through a connection roadway. According to the roadway structure of the coal mine system, tunneling work of the coal roadways is reduced, if coal uncovering is conducted within a protection range at a protected layer coal face, coal uncovering can be conducted more rapidly, and meanwhile auxiliary conveying continuity is facilitated.

Description

technical field [0001] The invention relates to a roadway structure, in particular to a roadway structure of a coal mine system. Background technique [0002] Mining area range of coal north panel system roadway in East 1st Group C of Zhujidong Mine: North to F 29 (∠70°, H=0~30m) and Minglongshan fault (inverse) (∠70°, H>1000m), south to the protection coal pillar of Dongyi Daxiang, east to DF113 fault (inverse ∠65°~70° , H=0~10m), west to Gongguang and shaft protection coal pillar line. The 13-1 and 11-2 coal seams are mined in this area, and the corresponding ground elevation is +22.3m~+24.0m. [0003] The general gas control method chooses 11-2 coal as the protective layer and mines first. There are two types of gas control in the 11-2 coal seam. One is the layout of "four lanes on one side", that is, the floor drainage lane is used to drill and cover the excavation along the trench, supplemented by ground drilling to extract the pressure relief gas of the 13-1 coal...

AI Technical Summary

Problems solved by technology

[0006] With the continuous extension of the lower limit of mining in the mining area, the continuous increase of mining costs, and the renewal of auxiliary transportation equipment, the above layout methods have the following problems: 1) Group C coal mining needs to arrange 8 system roadways, and the amount of work and investment are large, resulting in mining The cost is high and the benefit is poor; 2) The return air system is arranged in the coal roadway, and the drainage drilling needs to be constructed to cover the excavation before construction, which affects the production period of the mining area, increases investment, and the maintenance work of the coal roadway is large; 3) In the system roadway to protect the coal pillar, the coal roadway is formed along the channel, and it also needs to be covered by construction drainage drilling, which requires a large amount of drilling work and a long construction period;

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