“双大”放顶煤开采的实践

目前国内对大倾角特厚易燃煤层群进行走向长壁倾斜分层开采尚无定型综采设备和方法,煤层厚度、结构又达不到水平或斜切综采的要求,只能进行走向长壁倾斜分层炮工开采。经东峡煤矿多年开采实践证实,只有进行大采高、大进度“双大”放顶煤开采,才能实现高产、高效。

Practice of "Double-big" Caving Coal Mining

There is no finalize designing fully mechanized coal mining equipments and mining methods in the long wall caving and incline slicing blasting mining face along the strike on the steeply dipping seam group which is special thick and flammable at present,the thickness of coal seam and structure can't obtain the request of fully mechanized and incline slicing coal mining,only process blasting mining in long wall caving method along the strike.The practice of coal mining for many years in Dongxia Coal Mine tests that only carrying out the big mining height and high advance "Double-big" top coal mining,the high efficiency and high output can be achieved.