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通过对大倾角煤层走向长壁回采时顶底板活动规律的分析,发现了走向长壁p采工作面顶底板垮落的特点。针对顶底板活动规律采取了相应措施,对工作面切眼的布置方式及收作方法进行了大胆改革,防止了初放、收作期间的垮面,为大倾角走向长壁回采工作面的技术参数、开采顺序的选择提供了实际经验,解决了大倾角走向长壁工作面的初放、收作时的安全技术问题。
Through the analysis of roof and floor movement rules of longwall mining with steeply sloped coal seam, it is found that the roof and floor caving of longwall coal mining face is characterized by caving. In response to the law of roof and floor activities, corresponding measures have been taken to boldly reform the arrangement of cut face and the method of receiving work, preventing the collapse during the initial release and closing and the technology for longwall mining face with steep dip The selection of parameters and mining sequence provides practical experience and solves the safety technical problems when the dip face moves to the initial face of the longwall face.