Method for coal mine downhole reproduction and back production
A coal mining method and coal mine technology, applied in mine/tunnel ventilation, ground mining, mining equipment, etc., can solve the problems of low degree of mechanization of the working face, low yield per unit area of the working face, and low degree of mechanization, etc. Environmental protection, reduction of workers, and high degree of mechanization
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[0029] The specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings:
[0030] As shown in FIG. 1 , a roadway layout diagram of a method for re-mining and recovering coal in a coal mine of the present invention. The layout of the roadway is to divide several sections in the panel area, and arrange two preparation roadways in the section, one of which is used as the air inlet and the other is used as the return air. As the return air alley of the next section, only one return air alley is to be excavated in the next section, and a long column is arranged in the middle of the two prepared roadways. The long column is about 16m wide and 20~150m long. The width of the mining house is 4m, the width of the mining column is 4+4=8m, and the coal column is 5m. At the end of each section of the ventilation road, a gas end road is set, and the gas end road is connected with each section of the ventilation road; the remaining...
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