地震属性和瞬变电磁技术在煤田勘探中的应用
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摘要
煤层的富水区严重威胁煤矿的生产安全,探明富水区的分布和断层、陷落柱等含水构造的发育情况,可以有效地指导煤矿的水害防治工作。地震属性可以有效识别断层、陷落柱等地质异常体,但难以对地层富水性进行探测。断层、陷落柱的电阻率主要取决于岩层的破碎程度及富水性,富水断层、陷落柱的电阻率远小于非富水断层和周围非富水地层,这是利用瞬变电磁探测含水断层、陷落柱和富水区的地球物理依据。本文结合华南某煤矿的应用实例,证明结合地震属性与瞬变电磁数据对探测煤田富水异常区效果良好。
Water-rich anormal bodies such as faults,collapsed columns and other structures in coalmines pose a serious threat to the safety of coalmine operations.To determine this kind of anormal bodies is very helpful for mining operations.Seismic attributes can identify anormal bodies,but it's difficult to tell the difference between water-rich anormal bodies or dry anormal bodies.So the joint use of seismic attributes and transient electromagnetic data is proposed to tell the difference.The resistivity in structures shows rock fragmentation and rock water-content.Water-rich faults and water-rich collapsed columns have much smaller resistivity than water-poor faults and water-poor collapsed columns.This geophysical observation obtained from the transient electromagnetic method can be used to detect water-rich anormal bodies in coalmines.In this paper,we demonstrate an example in a coalmine in China,in which water-rich anormal bodies are clearly detected based on the joint use of seismic attributes and transient electromagnetic data.
Water-rich anormal bodies such as faults,collapsed columns and other structures in coalmines pose a serious threat to the safety of coalmine operations.To determine this kind of anormal bodies is very helpful for mining operations.Seismic attributes can identify anormal bodies,but it's difficult to tell the difference between water-rich anormal bodies or dry anormal bodies.So the joint use of seismic attributes and transient electromagnetic data is proposed to tell the difference.The resistivity in structures shows rock fragmentation and rock water-content.Water-rich faults and water-rich collapsed columns have much smaller resistivity than water-poor faults and water-poor collapsed columns.This geophysical observation obtained from the transient electromagnetic method can be used to detect water-rich anormal bodies in coalmines.In this paper,we demonstrate an example in a coalmine in China,in which water-rich anormal bodies are clearly detected based on the joint use of seismic attributes and transient electromagnetic data.
引文
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[8] 李强,刘建红,张中平.应用GeoEast解释系统预测煤层中火成岩的侵入范围.石油地球物理勘探,2014,49(增刊1):192-197.LI Qiang,LIU Jianhong,ZHANG Zhongping.Prediction of igneous rock incursion in coal seam with GeoEast.Oil Geophysical Prospecting,2014,49(S1):192-197.
[9] 庄益明,孔俊禹.煤田陷落柱地震属性分析.煤炭技术,2018,37(7):115-118.ZHUANG Yiming,KONG Junyu.Seismic attribute analysis of collapsing column in coalfield.Coal Technology,2018,37(7):115-118.
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[11] 薛国强,李貅.从瞬变电磁电性剖面到拟地震剖面的转换.石油地球物理勘探,2003,38(4):444-446.XUE Guoqiang,LI Xiu.Transform from transient electromagnetic (TEM) electric section into pseudo-seismic section.Oil Geophysical Prospecting,2003,38(4):444-446.
[12] 周建美,李貅,戚志鹏.浅水域各向异性地层中的瞬变电磁响应分析.石油地球物理勘探,2016,51(4):821-829.ZHOU Jianmei,LI Xiu,QI Zhipeng.Transient elec-tromagnetic response analysis for anisotropic media inshallow water.Oil Geophysical Prospecting,2016,51(4):821-829.
[13] 覃庆炎.瞬变电磁法在积水采空区探测中的应用.煤炭科学技术,2014,42(8):109-112.QIN Qingyan.Application of transient electromagne-tic method for water accumulated goaf in coal mines.Coal Science and Technology,2014,42(8):109-112.
[14] 曹静,吴灿灿.地面瞬变电磁法对采空区赋水情况的应用研究.长春工程学院学报,2017,18(2):100-103.CAO Jing,WU Cancan.The applied research on assignment to water bearing property in mined-out area by ground transient electromagnetic method.Journal of Changchun Institute of Technology,2017,18(2):100-103.
[15] 张德生,刘振华,杨特波.瞬变电磁法在煤矿富水区探测中的应用.矿业工程研究,2013,24(4):51-55.ZHANG Desheng,LIU Zhenhua,YANG Tebo.Ap-plication of TEM in detecting water-rich area in coal mines.Mineral Engineering Research,2013,24(4):51-55.
[2] 汤红伟.地震属性解释技术在探测陷落柱中的研究与应用.中国煤炭地质,2012,24(1):49-52.TANG Hongwei.Research and application of seismic attribute interpretation technology in subsided column prospecting.Coal Geology of China,2012,24(1):49-52.
[3] 刘树才,刘志新,姜志海.瞬变电磁法在煤矿采区水文勘探中的应用.中国矿业大学学报,2005,34(4):414-417.LIU Shucai,LIU Zhixin,JIANG Zhihai.Application of TEM in hydrogeological prospecting of mining district.Journal of China University of Mining & Technology,2005,34(4):414-417.
[4] 苏林,刘鑫明,刘燚.瞬变电磁法在煤矿富水区探测中的应用.工程地球物理学报,2011,18(1):7-9.SU Lin,LIU Xinming,LIU Yi.Application of pros-pecting water-rich area of coal with TEM.Chinese Journal of Engineering Geophysics,2011,18(1):7-9.
[5] 张军华,刘杨,林承焰,等.甜点地震属性理论诠释及应用.石油地球物理勘探,2018,53(2):355-360.ZHANG Junhua,LIU Yang,LIN Chengyan,et al.Theoretical annotation and application of sweetness.Oil Geophysical Prospecting,2018,53(2):355-360.
[6] 李建雄,崔全章,魏小东.地震属性在微断层解释中的应用.石油地球物理勘探,2011,46(6):925-929.LI Jianxiong,CUI Quanzhang,WEI Xiaodong.Application of seismic attributes in micro-fault interpretation.Oil Geophysical Prospecting, 2011,46(6):925-929.
[7] 杜长江,张中平,高启才,等.GeoEast系统相干体技术在煤田地质异常识别中的应用.石油地球物理勘探,2014,49(增刊1):208-211.DU Changjiang,ZHANG Zhongping,GAO Qicai,et al.Geological anomaly identification in coal mines with coherent volume approach provided by Geo- East.Oil Geophysical Prospecting,2014,49(S1):208-211.
[8] 李强,刘建红,张中平.应用GeoEast解释系统预测煤层中火成岩的侵入范围.石油地球物理勘探,2014,49(增刊1):192-197.LI Qiang,LIU Jianhong,ZHANG Zhongping.Prediction of igneous rock incursion in coal seam with GeoEast.Oil Geophysical Prospecting,2014,49(S1):192-197.
[9] 庄益明,孔俊禹.煤田陷落柱地震属性分析.煤炭技术,2018,37(7):115-118.ZHUANG Yiming,KONG Junyu.Seismic attribute analysis of collapsing column in coalfield.Coal Technology,2018,37(7):115-118.
[10] 胡祖志,石艳玲,何展翔,等.瞬变电磁法在西部黄土层勘探中的应用.石油地球物理勘探,2018,51(增刊1):131-135.HU Zuzhi,SHI Yanling,HE Zhanxiang,et al.Transient electromagnetic exploration in loess layer Western China.Oil Geophysical Prospecting,2018,51(S1):131-135.
[11] 薛国强,李貅.从瞬变电磁电性剖面到拟地震剖面的转换.石油地球物理勘探,2003,38(4):444-446.XUE Guoqiang,LI Xiu.Transform from transient electromagnetic (TEM) electric section into pseudo-seismic section.Oil Geophysical Prospecting,2003,38(4):444-446.
[12] 周建美,李貅,戚志鹏.浅水域各向异性地层中的瞬变电磁响应分析.石油地球物理勘探,2016,51(4):821-829.ZHOU Jianmei,LI Xiu,QI Zhipeng.Transient elec-tromagnetic response analysis for anisotropic media inshallow water.Oil Geophysical Prospecting,2016,51(4):821-829.
[13] 覃庆炎.瞬变电磁法在积水采空区探测中的应用.煤炭科学技术,2014,42(8):109-112.QIN Qingyan.Application of transient electromagne-tic method for water accumulated goaf in coal mines.Coal Science and Technology,2014,42(8):109-112.
[14] 曹静,吴灿灿.地面瞬变电磁法对采空区赋水情况的应用研究.长春工程学院学报,2017,18(2):100-103.CAO Jing,WU Cancan.The applied research on assignment to water bearing property in mined-out area by ground transient electromagnetic method.Journal of Changchun Institute of Technology,2017,18(2):100-103.
[15] 张德生,刘振华,杨特波.瞬变电磁法在煤矿富水区探测中的应用.矿业工程研究,2013,24(4):51-55.ZHANG Desheng,LIU Zhenhua,YANG Tebo.Ap-plication of TEM in detecting water-rich area in coal mines.Mineral Engineering Research,2013,24(4):51-55.
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