The geological structure in the min

The geological structure in the mine field is simple, the stratum of the whole mine area is gentle, and the joint fissures in the top and bottom rock layers of the main coal seams are moderately developed. When sandstone is the top and bottom plate, the stability is good. When the mudstone is the top and bottom plate, it is easy to crack in the horizontal direction due to weathering. The stability is poor. Pay attention to the occurrence of roof collapse during coal mining. At present, there is no water hazard accident in the production process of the mine. The coal seam in the mine field is shallowly buried, and the main water damage is atmospheric precipitation infiltration replenishment, which infiltrates the aquifer above the coal roof through rock layer fissure infiltration. In the empty area or roadway, the underground influx is relatively large, which has a certain influence on coal seam mining.