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物探是查明滑坡体岩性及判别滑坡体结构、滑带空间分布的有效而快捷的手段之一。其经济成本低、覆盖范围不受地形条件限制,在勘察工作中已成为配合地质勘探工作的首选方法。本文结合一个工程实例,介绍三极电测深法用于高速公路滑坡勘探的基本原理、野外使用方法、滑坡的地球物理特性、滑坡的电测深曲线特征、资料解释及钻孔验证情况,证明电测深在高速公路滑坡勘探中的有效性,对此类滑坡的电探工作提出某些见解。
Geophysical prospecting is one of the effective and quick methods to find out the lithology of landslide bodies and to determine the spatial distribution of landslide structure and landslide. Its economic cost is low, its coverage is not limited by the terrain conditions, and it has become the preferred method to cooperate with geological exploration in the investigation. In this paper, an engineering case is introduced to introduce the basic principle of three-pole electrical sounding method for expressway landslide exploration, the field use method, the geophysical characteristics of landslides, the electrical sounding curve characteristics of landslides, data interpretation and drilling verification. The validity of electric sounding in the landslide exploration of expressways suggests some opinions on the electric exploration work of such landslides.