Study on safe and efficient stoping technology of fully mechanized face with shallow mining height
The width of 22501 fully mechanized face in Bulianta Coal Mine is 300 m,the thrust length is 562.3 m,the mining area is 168 000 m2.The thickness of coal seam is 1.5-1.8 m,the average thickness of coal seam is 1.6 m,and the dip angle is 1°-3°.According to the exposed situation of the four-wall trough,the working face has no faults,scour and other structures.This paper introduces in detail the first weighting and periodic weighting of the working face and the weighting under special geological conditions,which is of guiding significance for the future mining of similar fully mechanized coal face.
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