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近年来高密度电法被广泛应用于重大水利工程场地的工程地质调查、坝基及桥墩选址、采空区及地裂缝探测等诸多工程勘察领域。本文利用高密度电法对某水库大坝坝址区的覆盖层厚度、隐伏断层等地质结构进行探测,并在结合钻探资料和区域地质资料综合分析的基础上,取得了理想的勘察结果。查明水库区存在隐伏的断层和覆盖层厚度,为水库坝址选择提供重要的地球物理依据。
In recent years, high-density electrical method is widely used in engineering geological survey of major water conservancy projects, dam foundation and piers site selection, goaf and ground fissure detection and many other engineering survey. In this paper, high-density electrical method is used to detect the thickness of cover layer and hidden faults in the dam site of a reservoir. Based on the comprehensive analysis of drilling data and regional geological data, an ideal survey result is obtained. It is found that there are hidden faults and overburden thickness in the reservoir area, which provides important geophysical basis for reservoir dam site selection.