高密度电法在水库堤坝隐患检测中的应用

Application of High Density Resistivity Method in Hidden Danger Detection of Reservoir Dam

渗漏是水库堤坝常见的病害之一,对其进行排查检测是除险加固的重要依据。以滥塘坡水库堤坝为研究对象,根据堤坝的地球物理特征,选取高密度电法作为无损检测方法,将其应用于堤坝隐患检测,通过分析电阻率的变化找到隐患部位,并结合现场地质调查及正演模拟结果进行对比分析。结果表明,采用高密度电法视电阻率反演断面推断的堤坝渗漏隐患位置及规模与现场渗漏部位高度吻合,验证了高密度电法在水库堤坝隐患检测中的有效性,为堤坝除险加固提供靶区。

Leakage is one of the common diseases of reservoir dams and its investigation and detection is an important basis for reinforcement.Taking the dam of Lantangpo Reservoir as the research object according to the geophysical characteristics of the dam the high-density resistivity method is selected as the non-destructive testing method and it is applied to the hidden danger detection of the dam.The hidden danger position is found by analyzing the change of resistivity and the results of field geological survey and forward simulation are compared and analyzed.The results show that the location and scale of the dam leakage hidden danger inferred by the apparent resistivity inversion section of the high-density resistivity method are highly consistent with the on-site leakage site which verifies the effectiveness of the high-density resistivity method in the detection of reservoir dam hidden danger and provides a target area for dam reinforcement.