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对新安煤矿首个深部复合极软岩综采工作面支架工作阻力进行了连续观测,得知工作面具有较明显的周期来压特征,但矿压显现不强烈。通过工作面覆岩特征分析,认为工作面矿压显现不强烈主要在于覆岩是存在主关键层的多关键层覆岩且关键层岩性较为软弱;实测支架工作阻力有较大富余量,对顶板漏冒和煤壁片帮控制较好,支架具有良好的适应性。
The working resistance of the first deep composite soft rock fully mechanized coal mining face in Xin’an Coal Mine was continuously observed. It was found that the face has obvious periodic pressure characteristics, but the rock pressure is not strong. Based on the analysis of the strata characteristics of the working face, it is considered that the strata of the working face are not strongly characterized by the fact that the overburden strata are the multi-key strata strata of the main key strata and the lithology of the key strata is relatively weak. Roof leakage and coal wall to help better control, stent has a good adaptability.