Shallow horizontal thick and extra thick seam adaptive mining technology Take Shendong mining area for examples

摘要

For the coal seam conditions of Shendong mine area are shallow, horizontal, thick and extra-thick, mining adaptabilities of combined technologies that short-wall mechanization combining with super-long long-wall large mining height fully-mechanized or fully mechanized sublevel caving are expounded in the terms of coal seam conditions, workface parameters, corollary equipments and process flows. And it made the first proof on a fully-mechanized workface that was 300m long and large mining height. The results show that the fully-mechanized process is adapted to the coal seam conditions and the resources mining rates are greatly improved and it made great economic benefits.