煤层采后覆岩中的导水裂隙带之上存在离层带。
There exits bed separation zone above water-conducting crack zone overburden after coal mining.
离层带注浆时的覆岩破坏形态和范围向工作面外侧突出较大。
Its range had the larger outstand to outboard working face under the condition of injecting grouts in separate layers.
本文探讨了泥浆在工作面预注浆、壁后充填注浆、冒空区充填注浆和离层带充填注浆中的应用。
In this paper the authors approach the application of drilling mud to face pre-injection, backwall infilling injcetion, roof fall space infilling injection and split zone infilling injcetion.
应用推荐