堤坝渗漏快速探测技术研讨

Discussion on rapid detection technology for dike leakage

地球物理探测方法广泛应用于堤坝渗漏探测,各种物探方法均具有局限性,需采用多种方法相互验证。根据堤坝渗漏快速探测需要,采用以流场法探测为主、高密度电法探测为辅的物探方法,对堤坝渗漏进行探测。结果表明,流场法能快速确定大坝渗漏入口区域,大坝存在两处渗漏位置,一处为管涌形式渗漏,另一处为裂缝或软弱夹层;高密度电法测试结果揭示坝体内部含水量高的区域,进一步证实两处渗漏为独立分开,渗漏通道未斜穿坝体。

Geophysical detection methods are widely used in dike leakage detection,and various geophysical methods have limitations and need to be verified by multiple methods.According to the needs of rapid detection of dike leakage,the geophysical method of flow field detection is mainly used and supplemented by high-density electric detection to detect dike leakage.The results show that the flow field method can quickly determine the leakage inlet area of the dam,and there are two leakage locations in the dam,one is leakage in the form of pipe surge,and the other is crack or weak interlayer.The high-density electrical test results revealed the areas with high water content inside the dam body,which further confirmed that the two leaks were separated independently,and the leakage channel did not penetrate the dam body obliquely.