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前言根据部.院领导指示精神,为了给唐山矿南翼五煤层自移支架设计提供比较切合实际的基础参数,在1973年1—4月5258样机试验工作面矿压观测的基础上,今年又在5351全工作面自移支架试验过程中进行了必要的矿压观测。从5月15日正式运转到10月31日,工作面共推进300米,支架移动约600步。支架在此期间经历了直接顶初次大面积冒落和多次周期来压的考验,并且经过三条落差分为0.3—1.3米、0.6米、0.45米的断层,过一条老巷,两
Preface According to the instructions from the leaders of the ministry and the hospital, in order to provide more realistic basic parameters for the design of the fifth coal seam self-moving stent in the south wing of Tangshan Mine, based on the rock pressure observation of 5258 prototype pilot work surface in January-April 1973, this year The necessary pressure observation was carried out during the test of 5351 full-face self-moving stent. From May 15 formal operation to October 31, a total of 300 meters to promote the work surface, stent movement of about 600 steps. During this period, the stent underwent the test of direct large-area first large-area plunge and multiple cycles to pressure, and after three falls there were 0.3-1.3 m, 0.6 m and 0.45 m faults, passing through an old lane and two