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高密度电法探测是滑坡面探测的有效手段,适宜 的现场工作方案和相应的资料解译模型,是获取 可靠探测成果的前提。本文针对高密度电法勘探 中常用的四类电极排列方式,即维纳、施伦贝谢、 偶极、二极,利用有限元的方法二维正演模拟建 立了均质土坡滑面、软弱夹层滑面、堆积层滑面、 构造破碎带滑面的标准地电模型剖面;明确了进 行不同类型滑坡工程地质调查时不同电测装置的 探测能力和视电阻率异常模式;提出复杂地质条 件下斜坡问题探测数据有效处理的设计比值参数 方法。最后给出若干利用高密度电阻率法进行滑 坡工程地质调查的典型实例。
High-density electrical detection is an effective means of landslide detection. Suitable site work programs and corresponding data interpretation models are the prerequisites for obtaining reliable exploration results. In this paper, a series of four types of electrode arrangements, namely Wiener, Schlumberger, dipole and dipole, which are commonly used in high-density electrical prospecting, are established. By using the finite element method, Soft interlayer slip surface, accumulated slip surface, and the standard geoelectric model section for the construction of broken slip surface. The detection capability and apparent resistivity anomaly mode of different electrical measuring devices are clearly defined when conducting different types of landslide engineering geological survey. The complicated geological conditions Design ratio parameter method for effective processing of sounding data of slopes. Finally, some typical examples of using high density resistivity method to carry out landslide engineering geological survey are given.