摘要
Abstract
Dam leakage is a common phenomenon that requires regular evaluation and monitoring.Comprehensive object detection method was used to conduct comprehensive two-dimensional resistivity tomography(ERT)and natural potential(ERT)analysis on an earth-rock dam.The results show that the local negative anomalies on the upstream side of the dam are as high as 27 mV,which is the leakage inlet or recharge area,while the downstream side is as high as 20 mV,which is the outlet or discharge area.The study showed that the spatial correlation between the resistivity model,SP data and terrain was good,and the conductive deposits of saturated water in the dam matched the negative SP amplitude of the inlet or supply area.Based on the characteristics and spatial distribution of coarse alluvial layers(sand and gravel)below the dam dam filler,the water level measurement results of existing pressure gauges were analyzed,and the results showed that most of the leakage occurred under the dam.关键词
综合物探法/自电位法/电阻率层析成像法/渗漏Key words
Comprehensive object detection method/self-potential method/resistivity tomography method/leakage分类
建筑与水利
