曹家滩煤矿首采面导水裂隙带高度研究被引量：4

Study on the height of water flowing fractured zone in the first mining face of Caojiatan coal mine

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摘要煤层开采后,上覆岩层导水裂隙带高度的确定对于顶板水害防治与保水采煤均具有重要的技术指导意义。根据曹家滩煤矿首采工作面开采技术条件与岩石力学参数,采用物理相似模拟试验、经验公式计算和现场实测相结合的方法对导水裂隙带高度进行了研究确定。结果表明:物理模拟试验预测导水裂隙带高度145 m,裂采比24.2;经验公式预计导水裂隙带高度89.6 m,裂采比14.9,与物理模拟试验相差较大;钻孔冲洗液漏失量观测预测导水裂隙带高度分别为136.10 m和139.15 m,裂采比22.68和23.19。通过综合分析得到,物理相似模拟试验结果与现场实测数据较为接近,现有经验公式已不适用于曹家滩煤矿条件下的导水裂隙带高度确定。 After coal seam mining,the determination of the height of water flowing fractured zone of the overburden rock has important technical guiding significance for roof water damage prevention and water-preserved coal mining.According to the mining technical conditions and rock mechanics parameters of the first mining face in Caojiatan Coal Mine,the height of water flowing fractured zone was determined by the combination of physical similarity simulation test,empirical formula calculation and field measurement.The results show that the physical simulation test predicts that the height of the water flowing fractured zone is 145 m and the ratio of crack height to mining height is 24.2,the empirical formula shows that the height of the water flowing fractured zone is 89.6 m and the ratio of crack height to mining height is 14.9,and the leakage of the drilling flushing fluid predicts that the height of the water flowing fractured zone is 136.10~139.15 m and the ratio of crack height to mining height is 22.68~23.19.Through comprehensive analysis,the results of physical similarity simulation test are close to the actual measured data,and the existing empirical formula is not applicable to the determination of the height of the water flowing fractured zone in Caojiatan Coal Mine.

作者于水黄克军杨建辉 YU Shui;HUANG Ke-jun;YANG Jian-hui(Shaanxi Coal Chemical Industry Technology Research Institute Co.,Ltd.,Xi’an 710065,China;National and Local United Engineering Research Center of Green Safe and Efficient Coal Mining,Xi’an 710065,China;Research Center of Coal Green Mining Engineering in Coal Industry,Xi’an 710065,China;Shaanxi Shanmei Caojiatan Mining Co.,Ltd.,Yulin 719000,China)

机构地区陕西煤业化工技术研究院有限责任公司煤炭行业煤炭绿色开采工程研究中心煤炭绿色安全高效开采国家地方联合工程研究中心陕西陕煤曹家滩矿业有限公司

出处《陕西煤炭》 2020年第S01期42-46,共5页 Shaanxi Coal

关键词物理模拟现场实测导水裂隙带经验公式 physical simulation field measurement water flowing fractured zone empirical formula

分类号 TD745 [矿业工程—矿井通风与安全] TD325 [矿业工程—矿井建设]