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瞬变电磁法在采空塌陷灾害中的应用——以神东煤矿采空区调查为例

龚培俐 李维

龚培俐, 李维, 2018. 瞬变电磁法在采空塌陷灾害中的应用——以神东煤矿采空区调查为例. 地质力学学报, 24 (3): 416-423. DOI: 10.12090/j.issn.1006-6616.2018.24.03.043
引用本文: 龚培俐, 李维, 2018. 瞬变电磁法在采空塌陷灾害中的应用——以神东煤矿采空区调查为例. 地质力学学报, 24 (3): 416-423. DOI: 10.12090/j.issn.1006-6616.2018.24.03.043
GONG Peili, LI Wei, 2018. APPLICATION OF TRANSIENT ELECTROMAGNETIC METHOD IN COLLAPSE HAZARD OF GOAF: TAKE THE INVESTIGATION OF THE GOAF IN SHENDONG COAL MINE AS AN EXAMPLE. Journal of Geomechanics, 24 (3): 416-423. DOI: 10.12090/j.issn.1006-6616.2018.24.03.043
Citation: GONG Peili, LI Wei, 2018. APPLICATION OF TRANSIENT ELECTROMAGNETIC METHOD IN COLLAPSE HAZARD OF GOAF: TAKE THE INVESTIGATION OF THE GOAF IN SHENDONG COAL MINE AS AN EXAMPLE. Journal of Geomechanics, 24 (3): 416-423. DOI: 10.12090/j.issn.1006-6616.2018.24.03.043

瞬变电磁法在采空塌陷灾害中的应用——以神东煤矿采空区调查为例

doi: 10.12090/j.issn.1006-6616.2018.24.03.043
详细信息
    作者简介:

    龚培俐(1993-), 女, 硕士, 主要从事环境工程和环境地质等方面的研究工作。E-mail:1194134188@qq.com

  • 中图分类号: P631.325;P642.26

APPLICATION OF TRANSIENT ELECTROMAGNETIC METHOD IN COLLAPSE HAZARD OF GOAF: TAKE THE INVESTIGATION OF THE GOAF IN SHENDONG COAL MINE AS AN EXAMPLE

  • 摘要: 由人工采矿及天然作用形成的地下空洞是引起地面塌陷、地裂缝等多种环境地质灾害的根源之一。在煤矿开采区,地下空洞主要是煤矿采空区,采空区受水文地质条件和开采时间的影响,呈现积水和不积水状态。利用瞬变电磁法对神东矿区采空区进行了调查勘探,用最原始的归一化二次电位解释采空不积水区及采空积水区,并根据地下空洞发育的时间长短及积水程度的不同,会呈现高阻异常或低阻异常,在视电阻率断面图上呈现出十分显著的特征。给瞬变电磁法勘探应用于采空区及采空积水区的探测提供了实例,对预测和防治采空区引起的塌陷环境地质灾害具有重要意义。

     

  • 图  1  神东矿区位置及构造示意图

    Figure  1.  Location and structure of the Shendong mining area

    图  2  矩形回线的磁力线及等效涡流环

    Tx—发射线框;t—衰减时间
    a—稳定磁场的建立;b—磁场的衰减

    Figure  2.  Rectangular loop lines and equivalent eddy current ring(Tx:Transmission line frame, t: decay time)

    图  3  瞬变电磁法测深工作装置示意图

    TX—供电线框;RX—为接收探头;L—线框边长

    Figure  3.  A schematic diagram of a transient electromagnetic sounding device (TX is the power supply wire frame, RX is the receiving probe, and L is the length of the wire frame)

    图  4  瞬变电磁法资料处理与解释流程图

    Figure  4.  Flow chart of TEM data processing and interpretation

    图  5  顺层视电阻率切片趋势分析成果图

    Figure  5.  Results map of trend analysis of bedding apparent resistivity section

    图  6  S30线对应2-2号煤层深度部分测道归一化二次电位(V2/I)剖面图

    Figure  6.  Profile map of normalized secondary potential (V2/I) of some survey channels in 2-2 coal seam corresponding to Line S30

    图  7  S30线视电阻率断面图

    Figure  7.  Line S30 apparent resistivity section

    图  8  采空异常区及采空积水异常区综合成果图

    Figure  8.  Comprehensive map of the abnormal goaf areas and the abnormal goaf areas with accumulated water

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  • 收稿日期:  2017-11-10
  • 修回日期:  2018-01-28
  • 刊出日期:  2018-06-28

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