高密度电法在水库坝址区勘察中的应用

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。

Application of Electrical Resistivity Imaging to Reservoir Dam Site Investigation

In recent years, electrical resistivity imaging is widely used in major hydraulic engineering, such as site engineering geological investigation, selecting the location of the dam foundation and bridge pier, detection of mined-out area and ground fissure, many engineering survey areas and so on. Electrical resistivity imaging is applied to detecting geological structure in this article, such as thickness of covering layer of the reservoir dam site area and concealed faults,then, ideal results were obtained on the basis of comprehensive analysis of drilling data and regional geologic data. Finding out the concealed faults and thickness of covering layer in the reservoir area provides important geophysical basis for the determination of reservoir dam site.