Safety state monitoring analysis of seepage from Daban Reservoir

Abstract

To understand the seepage security state of Daban Reservoir dam, process line analysis, correlation analysis, infiltration slope drop analysis and permeability analysis were conducted on the seepage monitoring data, and single-factor and multivariate statistical models were established to demonstrate the influencing factors of the pipe water level. The results show that the dam is generally effective in preventing seepage, the change in seepage flow before and after the seepage wall is not significant, the measured infiltration line is higher than the design value, and the correlation between the pipe water level and the reservoir water level is significant. 2020 flood season seepage occurs on the downstream slope of the dam, the height is higher than the top elevation of the drainage body, the actual operation results verify the accuracy of the analysis of the monitoring data and there is a seepage flow safety hazard. It is recommended that measures be taken to eliminate potential seepage hazards and to strengthen safety monitoring and surveillance.