三维瞬变电磁法超前探测勘探钻孔封堵效果研究
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摘要
为了对煤矿地质调查的钻孔封堵效果做出有效评价,基于传统的瞬变电磁超前探测技术,设计在掘进工作面定点的多方向的小线圈三维超前探测技术及探测结果三维可视化方法,并在小回沟煤矿对BZ-13勘探钻孔的封堵效果进行了探测。研究结果表明:该钻孔在水平二维扇形拟断面图上成一个低于25Ω·m的近似圆形的低阻区域,在垂直巷道掘进的二维扇形拟断面图上成一个低于25Ω·m的近似条带状低阻区域,依据矿区探测经验,视电阻率在20～25Ω·m时,煤岩层会有少量含水,经钻探验证,瞬变电磁探测结果准确,说明该方法能够较准确地确定钻孔的位置以及其导含水情况;三维立体显示,使钻孔范围及位置更直观,呈现一个近似直立的圆柱状形态,使探测成果更加易于分析,可更好地指导煤矿安全生产。
In order to effectively evaluate the drilling plugging effect of coal mine geological survey,based on the traditional transient electromagnetic lead detection technology,the multi-directional three-dimensional lead-front detection technology for multi-directional positioning at the heading face and the three-dimensional visualization method for detecting results are designed. The sealing effect of Exploration Borehole BZ-13 was detected in Xiaohuigou Coal Mine. The results show that the borehole is an approximately circular low-resistance area of less than 25 Ω·m on the horizontal two-dimensional fan-shaped pseudo-section,and is less than 25 Ω·m on the two-dimensional fan-shaped cross-section of the vertical roadway. The approximate strip-shaped low-resistance area of m,according to the mining area experience,when the apparent resistivity is 20 ～ 25 Ω·m,there will be a small amount of water in the coal and rock layers. After drilling verification,the transient electromagnetic detection result is accurate,indicating that the method can be more accurate. The position of the borehole and its water-conducting condition are determined; the three-dimensional display makes the drilling range and position more intuitive,and presents an approximately upright cylindrical shape,which makes the detection results easier to analyze and better guides the safe production of coal mines.
In order to effectively evaluate the drilling plugging effect of coal mine geological survey,based on the traditional transient electromagnetic lead detection technology,the multi-directional three-dimensional lead-front detection technology for multi-directional positioning at the heading face and the three-dimensional visualization method for detecting results are designed. The sealing effect of Exploration Borehole BZ-13 was detected in Xiaohuigou Coal Mine. The results show that the borehole is an approximately circular low-resistance area of less than 25 Ω·m on the horizontal two-dimensional fan-shaped pseudo-section,and is less than 25 Ω·m on the two-dimensional fan-shaped cross-section of the vertical roadway. The approximate strip-shaped low-resistance area of m,according to the mining area experience,when the apparent resistivity is 20 ～ 25 Ω·m,there will be a small amount of water in the coal and rock layers. After drilling verification,the transient electromagnetic detection result is accurate,indicating that the method can be more accurate. The position of the borehole and its water-conducting condition are determined; the three-dimensional display makes the drilling range and position more intuitive,and presents an approximately upright cylindrical shape,which makes the detection results easier to analyze and better guides the safe production of coal mines.
引文
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[19]李貅.瞬变电磁测深的理论与应用[M].西安:陕西科学技术出版社,2002.
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[21]王清虎,吴江.煤矿井下封闭不良勘探钻孔综合探查方法与实践[J].煤炭科学技术,2017,45(8):228-232.Wang Qinghu,Wu Jiang.Combined exploration method of poor sealing exploration borehole inunderground coal mine and its practices[J].Coal Science and Technology,2017,45(8):228-232.
[2]于景邨.矿井瞬变电磁法勘探[M].徐州:中国矿业大学出版社,2007.
[3]刘盛东,刘静,岳建华.中国矿井物探技术发展现状和关键问题[J].煤炭学报,2014,39(1):19-25.LIU Shengdong,LIU Jing,YUE Jianhua.Development status and key problems of Chinese mining geophysical technology[J].Journal of China Coal Society,2014,39(1):19-25.
[4]李佳俊.封闭不良钻孔导水及安全性评价方法研究[D].徐州:中国矿业大学,2016.
[5]王为申,贾庆孟.瞬变电磁法在封堵不良钻孔探测中的应用[J].山东煤炭科技,2015(2):155-157.WANG Weishen,JIA Qingmeng.Application of mine transient electromagnetic method in unfavorable-blocking borehole[J].Shandong Coal Technology,2015(2):155-157.
[6]张卫军.用瞬变电磁法探测麦垛山煤矿疑似封闭不良钻孔[J].现代矿业,2016,12(12):142-143.ZHANG Weijun.Using transient electromagnetic method to detect poorly closed drilling holes in Maizishan Coal Mine[J].Modern Mining,2016,12(12):142-143.
[7]李伟.瞬变电磁法探测钻孔封孔完整性研究[J].煤矿现代化,2015,3(3):77-79.LI Wei.Study on detection of sealing hole integrity by transient electromagnetic method[J].Coal Mine Modernization,2015,3(3):77-79.
[8]邢修举,于景邨.煤矿综采工作面突水水源瞬变电磁探测技术及应用[J].能源与环保,2017,39(1):96-99.XING Xiuju,YU Jingcun.The application of mine transient electromagnetic detection technology on working face water inrush water[J].China Energy and Environmental Protection,2017,39(1):96-99.
[9]王家臣,许延春.奥陶系石灰岩含水层钻孔隐性漏水机制与防治方法[J].岩石力学与工程学报,2009,28(2):342-347.WANG Jiachen,XU Yanchun.Mechanism and treatment method for potential water Leakage of aquifer through boreholes in ordovician limestone[J].Chinese Journal of Rock Mechanics and Engineering,2009,28(2):342-347.
[10]程建远,石显新.中国煤炭物探技术的现状与发展[J].地球物理学进展,2013,28(4):2024-2032.CHENG Jianyuan,SHI Xianxin.Current status and development of coal geophysical technology in China[J].Progress in Geophysics,2013,28(4):2024-2032.
[11]韩德品,赵谱,李丹.矿井物探技术应用现状与发展展望[J].地球物理学进展,2009,24(5):1839-1849.HAN Depin,ZHAO Pu,LI Dan.Application status and development prospects of mine geophysical exploration technology[J].Progress in Geophysics,2009,24(5):1839-1849.
[12]岳建华,刘树才.矿井直流电法勘探[M].徐州:中国矿业大学出版社,2000.
[13]姜志海,岳建华,刘树才.多匝重叠小回线装置形式的矿井瞬变电磁观测系统[J].煤炭学报,2007,32(11):1152-1156.JIANG Zhihai,YUE Jianhua,LIU Shucai.Mine transient electromagnetic observation system of small multi-turn coincident configuration[J].Journal of China Coal Society,2007,32(11):1152-1156.
[14]YU Jingcun,LIU Zhixin.Research on full space transient electromagnetic technique for detecting queous structures in coal mines[J].Journal of China University of Mining&Technology,2007,17(1):12-16.
[15]刘志新.矿井瞬变电磁场分布规律与应用研究[D].徐州:中国矿业大学,2007.
[16]杨海燕,邓居智,张华.矿井瞬变电磁法全空间视电阻率解释方法研究[J].地球物理学报,2010,53(3):651-656.YANG Haiyan,DENG Juzhi,ZHANG Hua.Research on fullspace apparent resistivity interpretation technique in mine transient electromagnetic method[J].Chinese Journal of Geophysics,2010,53(3):651-656.
[17]姜国庆,贾春梅.矿井瞬变电磁法全空间处理及三维解释方法研究[J].地球物理学进展,2005,5(5):78-81.JIANG Guoqing,JIA Chunmei,Research on full space processing and 3D interpretation of mine transient electromagnetic method[J].Progress in Geophysics,2005,5(5):78-81.
[18]李明星,程久龙.矿井瞬变电磁超前探测地质异常三维可视化[J].煤矿安全,2011,42(11):87-91.LI Mingxing,CHENG Jiulong.Mine transient electromagnetic advance detection geologic anomaly 3D visualization[J].Safety in Coal Mines,2011,42(11):87-91.
[19]李貅.瞬变电磁测深的理论与应用[M].西安:陕西科学技术出版社,2002.
[20]刘志新,岳建华,刘仰光.扇形探测技术在超前探测中的应用研究[J].中国矿业大学学报,2007,36(6):822-825.LIU Zhixin,YUE Janhua,LIU Yangguang.The application research of detection technology sector in leading exploration[J].Journal of China University of Mining&Technology,2007,36(6):822-825.
[21]王清虎,吴江.煤矿井下封闭不良勘探钻孔综合探查方法与实践[J].煤炭科学技术,2017,45(8):228-232.Wang Qinghu,Wu Jiang.Combined exploration method of poor sealing exploration borehole inunderground coal mine and its practices[J].Coal Science and Technology,2017,45(8):228-232.