瞬变电磁法在山西某矿采空区含水性探测中的应用
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摘要
针对探测区域9煤层埋藏较深,采高较高这一特点,在合理布置测网的基础上,采用瞬变电磁法对该矿采空区域进行全覆盖调查。通过分析瞬变电磁剖面图可以清晰地看出该探测区域内在标高1 270～1 280 m处存在煤矿采空区,且采空区充水,与矿方提供的煤层开采位置、开采高度基本吻合;依托瞬变电磁剖面图提供的电阻率数据,对多个剖面数据体进行综合提取、水平距离变换等,从而绘制探测区域内视电阻率切面等值线图,在瞬变电磁切面图上可以准确地圈定采空区含水区域的平面分布位置,为矿方后期在该区域内安全进行基础建设提供数据支撑。探测结果表明瞬变电磁法对含水低阻反映灵敏,可以为含水采空区探测及治理提供依据。
In view of the deep buried depth and high mining height of the 9 coal seam in the exploration area, on the basis of reasonable layout of survey network, transient electromagnetic method is used to investigate the full coverage of the gob area of the mine. Through the analysis of transient electromagnetic profiles, it can be clearly seen that there is goaf in the exploration area with the elevation of 1270～1280 m, and the goaf is filled with water,which is basically consistent with the mining position and mining height of the coal seam provided by the mining party. By comprehensive extraction and horizontal distance transformation of multiple section data, the apparent resistivity plane contour map in the detection area can be drawn, and the plane distribution position of the goaf water-bearing area can be accurately delineated on the transient electromagnetic plane plan,which is provided data support for infrastructure projects in the future. The detection results show that the transient electromagnetic method is sensitive to the low resistance of water and can provide a basis for the detection and control of water gob.
In view of the deep buried depth and high mining height of the 9 coal seam in the exploration area, on the basis of reasonable layout of survey network, transient electromagnetic method is used to investigate the full coverage of the gob area of the mine. Through the analysis of transient electromagnetic profiles, it can be clearly seen that there is goaf in the exploration area with the elevation of 1270～1280 m, and the goaf is filled with water,which is basically consistent with the mining position and mining height of the coal seam provided by the mining party. By comprehensive extraction and horizontal distance transformation of multiple section data, the apparent resistivity plane contour map in the detection area can be drawn, and the plane distribution position of the goaf water-bearing area can be accurately delineated on the transient electromagnetic plane plan,which is provided data support for infrastructure projects in the future. The detection results show that the transient electromagnetic method is sensitive to the low resistance of water and can provide a basis for the detection and control of water gob.
引文
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[3]黄力军,刘瑞德,陆桂福.瞬变电磁法在煤田水文地质调查中的应用[J].工程地球物理学报,2004,1(3):247-250.
[4]齐朝华,罗国平,刘镜竹.瞬变电磁大定源回线装置和多匝小线框重叠回线装置对比分析--以内蒙某煤矿水文物探为例[J].中国煤炭地质,2018,30(6):131-137.
[5]陈载林,黄临平,陈玉梁.我国瞬变电磁法应用综述[J].铀矿地质,2010,26(1):51-54.
[6]郭文波,宋建平,曹捷,等.回线源瞬变电磁法在地质灾害调查中的应用[J].物探与化探,2006(4):327-329.
[7]蔡少峰,朱光喜,韩永琦.TEM法在铁路深埋隧道工程勘察中的应用[J].工程地球物理学报,2008,5(2):187-191.
[8]薛国强,宋建平,武军杰.瞬变电磁法探测公路隧道工程中的不良地质构造[J].长安大学学报(地球科学版),2003,25(4):72-75.
[9]汤井田,李鹏博,肖晓.高频大地电磁法及瞬变电磁法在隧道勘察中的应用[J].物探化探计算技术,2017,39(5):605-611.
[10]王倩,李维.电法勘探在地质构造富水性探测中的应用[J].煤炭与化工,2017,40(2):116-119.
[11]陈明生.对瞬变电磁测深几个问题的思考(五)--地形对TEM资料的影响[J].煤田地质与勘探,2017,45(6):139-142.
[12]许新刚,岳建华,夏书,等.多层采空积水区瞬变电磁响应研究[J].中国煤炭地质,2017,29(4):73-77.
[13]陈龙,任龙.基于瞬变电磁法的采空区探测[J].露天采矿技术,2017,32(3):15-19.
[14]孙雪亮,王鹏.基于瞬变电磁法的立槽煤采空区结构探测[J].煤矿安全,2017,48(1):123-125.
[15]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.
[16]杨镜明,魏周政,高晓伟.高密度电阻率法和瞬变电磁法在煤田采空区勘查及注浆检测中的应用[J].地球物理学进展,2014,29(1):362-369.
[17]王鹏.积水采空区地井瞬变电磁法探测[J].煤炭技术,2017,36(6):134-136.
[18]戴前伟,侯智超,柴新朝.瞬变电磁法及EH-4在钼矿采空区探测中的应用[J].地球物理学进展,2013,28(3):1541-1546.
[19]解海军.煤矿积水采空区瞬变电磁法探测技术研究[D].北京:中国地质大学(北京):1-85.
[20]贾辉,陈昌彦,张辉,等.综合物探在京西浅层小煤窑采空区探测中的应用效果及问题探讨[J].工程勘察,2017(7):73-78.
[21]李生生,高晓耕,周禹良,等.综合物探技术在采空区勘探中的应用[J].煤矿安全,2016,47(7):62-65.
[22]陈江军,刘波,王鹏来,等.综合物探方法在石膏矿采空区探测中的应用研究[J].地球物理学进展,2018,33(2):784-789.