We have got good economic benefit by adopting the apply of multiple ceiling coal mining in the MineBlock of Hegang.
在鹤岗矿业集团公司应用综采放顶煤采煤法,取得了良好的经济效益。
2
It fundamentally differs from other methods by using as its' data set a geostatistically significant population of hardness data distributed across the mineblock model.
The selection of depressurization method, practical implementation of depressurization engineering and the realization of smooth extraction of high stress difficult-to-mineblock ar…