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高密度电法在黄土-泥岩接触面滑坡勘察中的应用

王磊 李孝波 苏占东 常晁瑜 彭达

王磊, 李孝波, 苏占东, 等, 2019. 高密度电法在黄土-泥岩接触面滑坡勘察中的应用. 地质力学学报, 25 (4): 536-543. DOI: 10.12090/j.issn.1006-6616.2019.25.04.052
引用本文: 王磊, 李孝波, 苏占东, 等, 2019. 高密度电法在黄土-泥岩接触面滑坡勘察中的应用. 地质力学学报, 25 (4): 536-543. DOI: 10.12090/j.issn.1006-6616.2019.25.04.052
WANG Lei, LI Xiaobo, SU Zhandong, et al., 2019. APPLICATION OF HIGH-DENSITY ELECTRICAL METHOD IN LOESS-MUDSTONE INTERFACE LANDSLIDE INVESTIGATION. Journal of Geomechanics, 25 (4): 536-543. DOI: 10.12090/j.issn.1006-6616.2019.25.04.052
Citation: WANG Lei, LI Xiaobo, SU Zhandong, et al., 2019. APPLICATION OF HIGH-DENSITY ELECTRICAL METHOD IN LOESS-MUDSTONE INTERFACE LANDSLIDE INVESTIGATION. Journal of Geomechanics, 25 (4): 536-543. DOI: 10.12090/j.issn.1006-6616.2019.25.04.052

高密度电法在黄土-泥岩接触面滑坡勘察中的应用

doi: 10.12090/j.issn.1006-6616.2019.25.04.052
基金项目: 

中央高校基本科研业务费专项创新团队资助计划项目 ZY20160101

廊坊市科技支撑计划项目 2017013154

详细信息
    作者简介:

    王磊(1988-), 男, 博士、讲师, 从事地质灾害和工程物探方面的科研和教学。E-mail:wangallen88@126.com

  • 中图分类号: P642.22

APPLICATION OF HIGH-DENSITY ELECTRICAL METHOD IN LOESS-MUDSTONE INTERFACE LANDSLIDE INVESTIGATION

  • 摘要: 受特殊的地质地貌和大地构造背景影响,历史上多次强震在宁夏西吉县诱发了大量的黄土-泥岩接触面滑坡,给当地人民生命财产安全带来严重威胁。因此,探明这类滑坡的地层结构、基岩面埋深及空间展布情况,对进一步开展黄土-泥岩接触面滑坡的形成机理和危险性评价研究具有重要意义。文章利用高密度电法对宁夏西吉县苏堡村滑坡进行探测,并结合钻孔资料进行了验证。勘察结果表明:电阻率参数能够很好的反应研究区的地层分布特征,表层疏松干燥的黄土为高阻反映,随着埋深增加,含水量较大的黄土呈现出低阻反映,在黄土与泥岩接触带饱水区呈现低阻反映。高密度电法在黄土-泥岩接触面滑坡勘察中具有较好的适应性,能为进一步分析滑坡机理和防治提供可靠的地球物理依据。

     

  • 图  1  高密度电法数据采集、处理流程图

    Figure  1.  Data collection and processing flow chart of the high density resistivity method

    图  2  西吉县震湖乡附近区域地质图

    Figure  2.  Regional geological map near the Zhenhu Town area in Xiji County

    图  3  苏堡村滑坡全貌(红色虚线处为滑坡边界,镜向SE)

    Figure  3.  General view of Subaocun Landslide (red dotted line camera towards SE)

    图  4  苏堡村滑坡测线布置图

    Figure  4.  Layout of measuring line in Subaocun Landslide

    图  5  苏堡村滑坡物探主测线L1电阻率色谱断面图

    Figure  5.  The resistivity chromatographic profile of the main geophysical measuring line in Subaocun Landslide

    图  6  苏堡村滑坡物探横测线L2电阻率色谱断面图

    Figure  6.  The resistivity chromatographic profile of geophysical measuring line L2 in Subaocun Landslide

    图  7  苏堡村滑坡物探横测线L3电阻率色谱断面图

    Figure  7.  The resistivity chromatographic profile of geophysical measuring line L3 in Subaocun Landslide

    图  8  电法揭示的苏堡村滑坡剖面

    Figure  8.  The profile map of Subaocun Landslide through the electrical method

    图  9  勘察钻孔揭示的岩芯柱状图

    Figure  9.  Columnar section revealed by bore holes

    表  1  地层岩性电性特征表

    Table  1.   Electrical parameters of different rocks

    地层岩性 电阻率范围/(Ω·m)
    黄土 干旱区 80~1000
    多雨区 100~200
    地下水含盐碱时 5~30
    粉质黏土 10~300
    砂质泥岩 10~100
    泥质砂岩 10~1000
    下载: 导出CSV
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出版历程
  • 收稿日期:  2018-11-05
  • 修回日期:  2019-05-21
  • 刊出日期:  2019-08-28

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