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带压综采工作面矿井综合物探及安全性评价研究
牟义1,2,3, 徐慧1,2,3, 马志超1,2,3, 姜鹏1,2,3
1.煤炭科学技术研究院有限公司 安全分院, 北京 100013;2.煤炭资源高效开采与洁净利用国家重点实验室 (煤炭科学研究总院), 北京 100013;3.北京市煤矿安全工程技术研究中心, 北京 100013
摘要:
采用瞬变电磁法和无线电波透视法对大饭铺矿61114工作面带压开采区域进行导水通道和富水性探测,综合分析瞬变电磁法和无线电波透视法圈出的异常重叠区域,据此对带压开采区域进行安全性评价分析,提出安全开采措施。结果表明:矿井瞬变电磁法主要探明含水层范围及富水性,无线电波透视法主要探明煤层及隔水层构造发育情况,而两种方法探测的异常体重叠区域则可能既有含水体,又有导水通道,为带压综采工作面防治水工作重点区域;对于井下综合物探圈定的重叠异常区需要进行提前打钻验证,当揭示存在富水构造异常区时,及时进行安全分析,必要时需实施注浆封堵导水构造或留设防水煤岩柱,保证工作面的安全采掘。
关键词:  矿井瞬变电磁法  无线电波透视法  富水性探测  导水通道探测  带压开采
DOI:10.11835/j.issn.1000-582X.2019.12.005
分类号:TD175
基金项目:国家科技重大专项资助项目(2016ZX05045001-004);国家自然科学基金资助项目(51704162,51804162);煤科院基础研究基金资助项目(2017JC07)。
Comprehensive geophysical exploration and safety evaluation of the mine with a fully mechanized pressurized mining face
MU Yi1,2,3, XU Hui1,2,3, MA Zhichao1,2,3, JIANG Peng1,2,3
1.Mine Safety Technology Branch of China Coal Research Institute, Beijing 100013, P. R. China;2.State Key Laboratory of Coal Mining and Clean Utilization(China Coal Research Institute), Beijing 100013, P. R. China;3.Beijing Mine Safety Engineering Technology Research Center, Beijing 100013, P. R. China
Abstract:
Through the combined use of transient electromagnetic method and radio wave perspective method, the water-rich mining area and the water-conducting channel were detected in the pressurized mining area of the 61114 working face of the Dafanpu Mine, and the overlapping abnormal areas identified by the transient electromagnetic method and the radio wave perspective method were comprehensively analyzed. Safety evaluation and analysis of the pressurized mining area was conducted, and safe mining measures were proposed. The results showed that the transient electromagnetic method mainly detected the aquifer range and water richness, the radio wave perspective method mainly detected the development of the coal seam and the aquifuge layer. The overlapping abnormal regions detected respectively by the two methods had both water bodies and water channels, which were key areas for water prevention and control. For these overlapping anomalies defined by the underground comprehensive geophysical exploration, it was necessary to carry out pre-drilling verification. When the existence of water-rich anomalous structural belt was confirmed, safety analysis should be conducted in time, and grouting may be necessary for blocking the water conducting fractured zone or setting waterproof coal (rock) pillar to guarantee the safe mining on the pressurized workface.
Key words:  transient electromagnetic method  radio wave perspective method  water-rich detection  water conducting fracture detection  pressurized mining
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