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为了研究同一工作面不同回采工艺接续时的矿山压力显现规律及支护方案,通过UDEC数值模拟及工业性实验的方法对大倾角中厚煤层炮采工作面转综采切眼围岩应力、塑性区发育过程及控制技术进行研究。得出了以下结论:由于急倾斜煤层在采空区的非均匀充填作用,导致沿工作面倾向方向中部应力高,两端相对较低。通过锚网索联合支护及分次刷帮扩大工作面回采空间的施工方案,成功地解决了不同工作面转型的难题。
In order to study the law of mine pressure and support scheme when different mining processes are connected on the same working face, the stress and plasticity of the surrounding rock in the fully mechanized coal mining face with steep dip and medium thick seam are studied by UDEC numerical simulation and industrial experiment. District development process and control technology research. The following conclusions are drawn: Due to the non-uniform filling of steep coal seam in the goaf, the stress in the middle along the working face tends to be high and the two ends are relatively low. Through the combination of anchor net support and sub-brush to help expand the working face back to the construction of the program space, successfully resolved the problem of different face transformation.