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作 者:苌珂 Chang Ke(Jincheng Coal Industry Group Sihe Mine,Shanxi Qinshui 048000)
出 处:《山东煤炭科技》2021年第3期163-165,共3页Shandong Coal Science and Technology
摘 要:为分析王台铺煤矿XV2317南条带工作面采后的覆岩破坏范围,在工作面风巷内设置两个压水试验钻孔,采用井下压水试验法对采后的破坏范围进行实测分析。得到1#钻孔处垮落带范围为12.45~16.6 m,裂隙带最高位于49.80~53.95 m,2#钻孔处垮落带范围为8.8~13.2 m,裂隙带最高位于57.2~61.6 m。综合两钻孔结果可以确定垮落带高度约为8.8~16.6 m,裂隙带上限为49.8~61.6 m。For the purpose of analyzing the failure range of overburden after mining in the XV2317 south strip face of Wangtaipu Coal Mine,two water pressure test boreholes are set up in the air roadway of the working face,and the failure range after mining is measured and analyzed by underground water pressure test method.The results show that the caving zone of borehole 1 is 12.45-16.6 m,the highest fracture zone is 49.80-53.95 m,the caving zone of borehole 2 is 8.8-13.2 m,and the highest fracture zone is 57.2-61.6 m.According to the results of two boreholes,the height of caving zone is about 8.8-16.6 m,and the upper limit of fracture zone is 49.8~61.6 m.
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