音频大地电磁法在矿山资源储量核实中的应用研究
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摘要
南方石墨鲁塘矿区煤矿大多垮塌或被水淹没,井下测量难以达到资源储量核实的目的。为了解决该项难题,提出了采用音频大地电磁测深法探测采空区与保有区分布范围。介绍了音频大地电磁法探测的工作流程,首次提出了采空区综合指数这一概念并进行了说明,并对勘探成果及应用展望进行了相关说明。勘探结果表明,音频大地电磁测深法二维电阻率成像能够识别煤系地层及其上下围岩,分析煤层电阻率分布的二维连续性、成层性以及纵向梯度的变化,可定性解译煤层的采空、上下围岩的塌陷松动以及采空区的充填属性,从而为该区资源储量核实提供了有力支撑。
The coal mines in Southern Graphite Lutang Coal Mine were mostly collapsed or submerged in water,and downhole measurements were difficult to achieve the purpose of verification of resource reserves.In order to solve this problem,an audio magnetotelluric sounding method was proposed to detect the distribution range of goaf and preserve area.The work flow of audio magnetotelluric detection was introduced.The concept of comprehensive index of goaf was proposed and explained for the first time.The exploration results and application prospects were explained.The results of the exploration showed that the audio magnetotelluric sounding method two dimensional resistivity imaging can identify coal-bearing strata and their surrounding rock formations,analyze the two dimensional continuity,stratification,and longitudinal gradient of resistivity distribution of the coal seam,and can qualitatively interpret the mining of the coal seam,the collapse of the surrounding rock,and the loosening of upper and lower surrounding rocks.As well as the filling properties of the goaf,it provided a strong support for the verification of resource reserves in the area.
The coal mines in Southern Graphite Lutang Coal Mine were mostly collapsed or submerged in water,and downhole measurements were difficult to achieve the purpose of verification of resource reserves.In order to solve this problem,an audio magnetotelluric sounding method was proposed to detect the distribution range of goaf and preserve area.The work flow of audio magnetotelluric detection was introduced.The concept of comprehensive index of goaf was proposed and explained for the first time.The exploration results and application prospects were explained.The results of the exploration showed that the audio magnetotelluric sounding method two dimensional resistivity imaging can identify coal-bearing strata and their surrounding rock formations,analyze the two dimensional continuity,stratification,and longitudinal gradient of resistivity distribution of the coal seam,and can qualitatively interpret the mining of the coal seam,the collapse of the surrounding rock,and the loosening of upper and lower surrounding rocks.As well as the filling properties of the goaf,it provided a strong support for the verification of resource reserves in the area.
引文
[1] 邹礼卿.“石墨之都”整合牵动行业生态[J].国土资源导刊,2011(11):36-38.Zou Liqing.Integration of "Graphite Capital" impacts industry ecology[J].Land & Resources Herald,2011(11):36-38.
[2] 李文.煤矿采空区地面综合物探方法优化研究[J].煤炭科学技术,2017,45(1):194-199.Li Wen.Optimization study of surface comprehensive geophysical detection methods of coal mine goaf[J].Coal Science and Technology,2017,45(1):194-199.
[3] 张军.音频大地电磁法在隧道涌水处治中的应用[J].工程地球物理学报,2015(2):162-166.Zhang Jun.Application of AMT method to tunnel gushing treatment[J].Chinese Journal of Engineering Geophysics,2015(2):162-166.
[4] 刘兵.EH4大地电磁测深法在隧道勘察中应用及所受干扰的分析——以洞湾隧道为例[EB/OL].http://www.doc88.com/p-6334475690536.html.
[5] 陈明生.关于频率电磁测深几个问题的探讨(一)——从可控源音频大地电磁测深原理看解释中的问题[J].煤田地质与勘探,2012(10):63-66.Chen Mingsheng.Problem of date interpretation from the view of principle of controlled-source audio-frequency magnetotellurics[J].Coal Geology & Exploration,2012(10):63-66.
[6] 孙希莹,莫子奋.音频大地电磁测深和激电测深综合性找矿应用研究[J].世界有色金属,2017(24):97-98.Sun Xiying,Mo Zifen.Study on the application of audio frequency magnetotelluric sounding and Isoelectric sounding for comprehensive ore prospecting[J].World Nonferrous Metal,2017(24):97-98.
[7] 张军.D+处理在CSAMT曲线编辑中的应用[J].工程地球物理学报,2010,7(2):185-189.Zhang Jun.The application of D+ solution to CSAMT curves editing[J].Chinese Journal of Engineering Geophysics,2010,7(2):185-189.
[8] 张凯飞.EH-4数据在IMAGEM与WINGLINK下反演处理的对比[J].物探与化探,2013,37(6):1146-1151.Zhang Kaifei.The contrast and analysis of EH-4 data proceed with IMAGEM and WINGLINK Software[J].Geophysical & Geochemical Exploration,2013,37(6):1146-1151.
[9] 雷达,张国鸿,黄高元,等.张量可控源音频大地电磁法的应用实例[J].工程地球物理学报,2014,11(3):286-294.Lei Dai,Zhang Guohong,Huang Gaoyuan,et al.Application of tensor CSAMT method[J].Chinese Journal of Engineering Geophysics,2014,11(3):286-294.
[10] 李树文,郝旭,金瞰昆,等.激电异常的形态解释方法及其应用研究[J].地质与勘探,2000,36(1):48-50.Li Shuwen,Hao Xu,Jin Kankun,et al.Morphological interpretation of induced polarization anomalies and its application[J].Geology and Prospecting,2000,36(1):48-50.
[11] 杜荣光,胡斌.EH4电导率连续成像系统在银厂坡地质勘查中的应用[J].矿产与地质,2006,20(z1):534-537.Du Rongguang,Hu Bin.Application of continuous imaging system of EH4 conductance in geological exploration in Yinchangpo[J].Mineral Resources and Geology,2006,20(z1):534-537.
[12] 刘国栋.电磁法和电法仪器的新进展[C]//第六届中国国际地球电磁学术讨论会,2007.
[13] 欧阳南.铜山口矿区深部找矿EH-4高频大地电磁测深低阻2、3、4异常解析[C]//湖北省地质学会成立50周年暨学术年会,2009.
[14] 张迅,雷旭友,李强强.音频大地电磁法(AMT)在某铁路隧道勘察中的应用[J].科技创新与应用,2015(1):3-4.Zhang Xun,Lei Xuyou,Li Qiangqiang.Application of AMT in exploration of a railway tunnel[J].Scientific and Technological Innovation and Application,2015(1):3-4.
[2] 李文.煤矿采空区地面综合物探方法优化研究[J].煤炭科学技术,2017,45(1):194-199.Li Wen.Optimization study of surface comprehensive geophysical detection methods of coal mine goaf[J].Coal Science and Technology,2017,45(1):194-199.
[3] 张军.音频大地电磁法在隧道涌水处治中的应用[J].工程地球物理学报,2015(2):162-166.Zhang Jun.Application of AMT method to tunnel gushing treatment[J].Chinese Journal of Engineering Geophysics,2015(2):162-166.
[4] 刘兵.EH4大地电磁测深法在隧道勘察中应用及所受干扰的分析——以洞湾隧道为例[EB/OL].http://www.doc88.com/p-6334475690536.html.
[5] 陈明生.关于频率电磁测深几个问题的探讨(一)——从可控源音频大地电磁测深原理看解释中的问题[J].煤田地质与勘探,2012(10):63-66.Chen Mingsheng.Problem of date interpretation from the view of principle of controlled-source audio-frequency magnetotellurics[J].Coal Geology & Exploration,2012(10):63-66.
[6] 孙希莹,莫子奋.音频大地电磁测深和激电测深综合性找矿应用研究[J].世界有色金属,2017(24):97-98.Sun Xiying,Mo Zifen.Study on the application of audio frequency magnetotelluric sounding and Isoelectric sounding for comprehensive ore prospecting[J].World Nonferrous Metal,2017(24):97-98.
[7] 张军.D+处理在CSAMT曲线编辑中的应用[J].工程地球物理学报,2010,7(2):185-189.Zhang Jun.The application of D+ solution to CSAMT curves editing[J].Chinese Journal of Engineering Geophysics,2010,7(2):185-189.
[8] 张凯飞.EH-4数据在IMAGEM与WINGLINK下反演处理的对比[J].物探与化探,2013,37(6):1146-1151.Zhang Kaifei.The contrast and analysis of EH-4 data proceed with IMAGEM and WINGLINK Software[J].Geophysical & Geochemical Exploration,2013,37(6):1146-1151.
[9] 雷达,张国鸿,黄高元,等.张量可控源音频大地电磁法的应用实例[J].工程地球物理学报,2014,11(3):286-294.Lei Dai,Zhang Guohong,Huang Gaoyuan,et al.Application of tensor CSAMT method[J].Chinese Journal of Engineering Geophysics,2014,11(3):286-294.
[10] 李树文,郝旭,金瞰昆,等.激电异常的形态解释方法及其应用研究[J].地质与勘探,2000,36(1):48-50.Li Shuwen,Hao Xu,Jin Kankun,et al.Morphological interpretation of induced polarization anomalies and its application[J].Geology and Prospecting,2000,36(1):48-50.
[11] 杜荣光,胡斌.EH4电导率连续成像系统在银厂坡地质勘查中的应用[J].矿产与地质,2006,20(z1):534-537.Du Rongguang,Hu Bin.Application of continuous imaging system of EH4 conductance in geological exploration in Yinchangpo[J].Mineral Resources and Geology,2006,20(z1):534-537.
[12] 刘国栋.电磁法和电法仪器的新进展[C]//第六届中国国际地球电磁学术讨论会,2007.
[13] 欧阳南.铜山口矿区深部找矿EH-4高频大地电磁测深低阻2、3、4异常解析[C]//湖北省地质学会成立50周年暨学术年会,2009.
[14] 张迅,雷旭友,李强强.音频大地电磁法(AMT)在某铁路隧道勘察中的应用[J].科技创新与应用,2015(1):3-4.Zhang Xun,Lei Xuyou,Li Qiangqiang.Application of AMT in exploration of a railway tunnel[J].Scientific and Technological Innovation and Application,2015(1):3-4.