摘要
为分析扎旗盟煤矿22021工作面采后的覆岩破坏范围,采用井下压水试验法对采后的破坏范围进行实测分析。在工作面设置两个压水试验钻孔Z01和Z02,角度分别为47°和43°,深度分别为102 m和106 m。整理两个钻孔试验数据得出:Z01钻孔的垮落带范围在18. 3～21. 9 m之间,导水裂隙带范围在65. 8～69. 5 m之间; Z02钻孔垮落带范围在17. 0～20. 5 m之间,导水裂隙带范围在61. 4～64. 8 m之间。综合两个钻孔的数据分析结果,可得出垮落带大约在20 m左右,导水裂隙带大约在65 m左右。
In order to analyze the damage range of overburden after mining in 22021 working face of Zhaqi League Coal Mine,the underground pressure water test method was used to measure and analyze the damage range after mining.Two water pressure test boreholes Z01 and Z02 are set in the working face,with angles of 47° and 43°,and depths of 102 m and 106 m,respectively.By sorting out the test data of two boreholes,it can be concluded that the caving zone ranges from 18.3 m to 21.9 m,the water conducting fracture zone ranges from 65.8 m to 69.5 m,and the caving zone ranges from 17.0 m to 20.5 m,and the water conducting fracture zone ranges from 61.4 m to 64.8 m.Based on the data analysis of the two boreholes,it can be concluded that the caving zone is about 20 m and the water conduction fracture zone is about 65 m.
作者
王丙迎
WANG Bing-ying(Tunlan Coal Mine of Xishan Coal Electricity Group Co., Ltd.,Taiyuan030200,China)
出处
《煤》
2019年第4期25-27,44,共4页
Coal
基金
国家自然科学基金资助项目(51504127)
关键词
导水裂隙带
垮落带
河流下开采
钻孔压水试验
water conduction fracture zone
caving zone
mining underrivers
borehole water pressure test
