综合物探在地面塌陷区探测中的应用
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摘要
在某地面塌陷区探测中,为准确判定塌陷回填区内是否存在空洞,根据地质条件和现场状况,选用可控源音频大地电磁测深(CSAMT)和瞬变电磁法进行综合探测。对典型断面图上低阻异常特征的分析结果表明,两种探测方法结果一致,但各有特点:CSAMT法探测深度大,对异常区的判断较为准确,但分辨率相对较低;瞬变电磁法分辨率优于CSAMT,但探测深度较浅,受目标深度内介质的物性影响较大,且浅部有盲区。异常区钻孔验证结果显示,探测结果准确可靠,表明综合物探方法应用于塌陷回填区的探测是准确、有效的。
In the detection of a subsidence area,for the purpose of accurately determining whether there are holes in the backfill area,the CSAMT and the transient electromagnetic method shall be selected for integrated detection based on the geological and field conditions,and the analytical results show that the detecting results of the two methods are basically identical,as shown by analyzing the abnormal characteristics of the typical sectional profile,but each has its own characteristics: The depth of CSAMT method is deeper than that of TEM,and the judgment of the abnormal area is relatively accurate,the resolution of TEM is better than that of CSAMT,but the detection depth is shallow,the depth of exploration is easily affected by the physical properties of the medium within the target depth and the shallow has a blind area. The drilling through the abnormal areas of the judgement shows that the detection results are accurate,and that the integrated geophysical method is accurate and effective in the survey of collapse of backfill area.
In the detection of a subsidence area,for the purpose of accurately determining whether there are holes in the backfill area,the CSAMT and the transient electromagnetic method shall be selected for integrated detection based on the geological and field conditions,and the analytical results show that the detecting results of the two methods are basically identical,as shown by analyzing the abnormal characteristics of the typical sectional profile,but each has its own characteristics: The depth of CSAMT method is deeper than that of TEM,and the judgment of the abnormal area is relatively accurate,the resolution of TEM is better than that of CSAMT,but the detection depth is shallow,the depth of exploration is easily affected by the physical properties of the medium within the target depth and the shallow has a blind area. The drilling through the abnormal areas of the judgement shows that the detection results are accurate,and that the integrated geophysical method is accurate and effective in the survey of collapse of backfill area.
引文
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[13]赵成斌,刘保金,姬继法,等.综合物探方法在地质灾害调查中的应用研究[J].物探与化探,2001,25(6):464-468.Zhao C B,Liu B J,Ji J F,et al. Application of integrated geophysical methods in geological hazard investigation[J]. Geophysical and Geochemical Exploration,2001,25(6):464-468.
[14]王宾,韩晓南,王康东,等.综合物探方法在采空塌陷区地质灾害勘查中的应用[J].工程地球物理学报,2013,10(5):725-729.Wang B,Han X N,Wang K D,et al. Application of integrated geophysical methods in geological hazard exploration in goaf subsidence area[J]. Chinese Journal of Engineering Geophysics,2013,10(5):725-729.
[15]李学军,窦硕娥,曲海涛.城市工程地球物理探测技术应用与发展趋势[J].工程地球物理学报,2008,5(5):564-563.Li X J,Dou S E,Qu H T. Application and development trend of urban engineering geophysical exploration technology[J]. Chinese Journal of Engineering Geophysics,2008,5(5):564-563.
[2]房纯纲,姚成林,贾永梅.堤坝隐患及渗漏无损检测技术与仪器[M].北京:中国水利水电出版社,2010.Fang C G,Yao C L,Jia Y M,et al. Techniques and instruments for nondestructive testing of dike hazards and seepage[M]. Beijing:China Water&Power Press,2010.
[3]汤井田,何继善.可控源音频大地电磁法及其应用[M].长沙:中南大学出版社,2005.Tang J T,He J S. Controlled source audio magnetotelluric method and its application[M]. Changsha:Central South University Press,2005.
[4]王若,王妙月.可控源音频大地电磁数据的反演方法[J].地球物理学进展,2003,18(2):197-202.Wang R,Wang M Y. Inversion method of controllable source audio magnetotelluric data[J]. Progress in Geophysics,2003,18(2):197-202.
[5]董杰,孟庆生,尹明泉,等.综合物探方法在采空塌陷区调查中的应用[J].物探与化探,2013,37(3):557-560.Dong J,Meng Q S,Yin M Q,et al. Application of integrated geophysical methods in investigation of goaf subsidence area[J]. Geophysical and geochemical Exploration,2013,37(3):557-560.
[6]刘宝利.综合物探方法在地质灾害调查中的应用[J].中国地质灾害与防治学报,1991,2(增刊):68-73.Liu B L.Application of integrated geophysical methods in geological disaster investigation[J]. The Chinese Journal of Geological Hazard and Control,1991,2(S1):68-73.
[7]穆海杰,王红兵. CSAMT法在南水北调中线采空区探测中的应用[J].工程地球物理学报,2008,5(3):321-325.Mu H J,Wang H B. Application of CSAMT method in the detection of goaf in the middle line of South-to-North Water Transfer Project[J]. Chinese Journal of Engineering Geophysics,2008,5(3):321-325.
[8]彭青阳.综合物探方法在地面塌陷勘察中的应用[J].工程地球物理学报,2017(1):31-36.Peng Q Y. The application of integrated geophysical methods in the investigation of ground collapse[J]. Chinese Journal of Engineering Geophysics,2017(1):31-36.
[9]包乃利,刘鸿福,余传涛,等.纳米瞬变电磁法在探测浅层铁矿采空区的实验研究[J].地球物理学进展,2013,28(2):952-957.Bao N L,Liu H F,Yu C T,et al. The detection of mined-out area of shallow iron ore by nanometer transient electromagnetic method[J]. Progress in Geophysics,2013,28(2):952-957.
[10]薛国强,李貅,底青云.瞬变电磁法理论与应用研究进展[J].地球物理学进展,2007,22(4)1195-1200.Xue G Q,Li X,Di Q Y. Progress in theory and application of TEM[J]. Progress in Geophysics,2007,22(4):1195-1200.
[11]邓凯,沈云发,张玉池.综合物探方法在高速公路岩溶塌陷探测中的应用分析[J].工程地球物理学报,2012,9(1):54-57.Deng K,Shen Y F,Zhang Y C. Application of integrated geophysical methods in karst collapse detection of Expressway[J]. Chinese Journal of Engineering Geophysics,2012,9(1):54-57.
[12]熊志涛,赵德君,文美霞,等.综合物探方法在武汉市毛坦港塌陷勘查中的应用[J].资源环境与工程,2014,28(4):188-196.Xiong Z T,Zhao D J,Wen M X,et al. Application of integrated geophysical prospecting methods in the subsidence exploration of Maotan Port,Wuhan[J]. Resources,Environment and Engineering,2014,28(4):188-196.
[13]赵成斌,刘保金,姬继法,等.综合物探方法在地质灾害调查中的应用研究[J].物探与化探,2001,25(6):464-468.Zhao C B,Liu B J,Ji J F,et al. Application of integrated geophysical methods in geological hazard investigation[J]. Geophysical and Geochemical Exploration,2001,25(6):464-468.
[14]王宾,韩晓南,王康东,等.综合物探方法在采空塌陷区地质灾害勘查中的应用[J].工程地球物理学报,2013,10(5):725-729.Wang B,Han X N,Wang K D,et al. Application of integrated geophysical methods in geological hazard exploration in goaf subsidence area[J]. Chinese Journal of Engineering Geophysics,2013,10(5):725-729.
[15]李学军,窦硕娥,曲海涛.城市工程地球物理探测技术应用与发展趋势[J].工程地球物理学报,2008,5(5):564-563.Li X J,Dou S E,Qu H T. Application and development trend of urban engineering geophysical exploration technology[J]. Chinese Journal of Engineering Geophysics,2008,5(5):564-563.
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