综合物探法在大坝渗漏勘察中的应用OA

Taking the Gunshuiba Reservoir in Hepu County,Guangxi,as the research object,a comprehensive inves-tigation and analysis were conducted to address the serious leakage problem of the dam.The geophysical explora-tion results revealed the spatial distribution and extension characteristics of the leakage anomaly area.The drilling and water injection tests further verified the connectivity and scale of the leakage channels.The dam leakage can be divided into three main areas:the bedrock fissure leakage in the left dam abutment and spillway area,the pipeline-type concentrated leakage in the middle and lower parts of the dam body,and the contact leakage along the right wa-ter conveyance culvert pipe.The research results show that the integrated investigation method can effectively im-prove the accuracy and efficiency of leakage detection,achieve the organic combination of anomaly zone position-ing,channel tracking and cause identification,and provide reliable geological basis for the leakage treatment of dan-gerous reservoirs.Based on the investigation results,this paper proposed a series of treatment suggestions including anti-seepage curtain grouting,leakage channel sealing,and reconstruction of inverted filter.