滑坡勘查中的高密度电阻率法异常特征  

The Anomaly Characteristics of High-density Resistivity Method Used in Landslide Investigation

作　　者：肖宏跃[1] 雷宛[1] 孙希薷[2] 

机构地区：[1]成都理工大学信息工程学院,四川成都610059 [2]电子科技大学通信与信息工程学院学院,四川成都610054

出　　处：《灾害学》2008年第3期27-31,共5页Journal of Catastrophology

基　　金：国家科技攻关计划(2005BA901A03)

摘　　要：以某滑坡区为例,使用高密度电阻率法对滑坡区的异常特征进行了研究,并对获取的视电阻率断面进行了地形校正。结果表明,对于沉积岩地区滑坡,滑坡体与滑床间存在明显的电性差异,根据经过地形改正的滑坡区视电阻率异常特征和断面,更清晰和直观显示了滑坡体的纵横向展布、主滑动面的位置与埋深,进而可圈定滑坡体的规模,从而为滑坡治理提供可靠的地球物理依据。Taking a landslide as an example, the anomaly characteristics of landslide area are studied by the use of high-density resistivity method and the terrain correction for apparent resistivity section is made. The results show that, for landslides in sedimentary areas, there exist obvious electric difference between landslide mass and slide bed. The characteristics of apparent resistivity anomaly and section with topographic correction in the landslide area clearly and intuitively show the vertical and lateral distribution of landslides and the position and depth of main sliding plane. So, the size of landslide mass can be delineated as the reliable geophysical basis for landslide control.

关 键 词：滑坡 视电阻率异常 地形校正 沉积岩 

分 类 号：P642.22[天文地球—工程地质学] P631.322[天文地球—地质矿产勘探]