燕山水库大坝渗流监测分析OA

In order to explore the seepage behavior of the Yanshan Reservoir dam,the process line method,correlation analysis and potential analysis method were used to analyze the observational data of the dam prototype.The results indicate that the piezometers in the dam's impervious body and the upstream side of the foundation exhibit a positive correlation with the reservoir water level.The hydraulic head at each measuring point decreases along the seepage path,and the phreatic line drops significantly after passing through the impervious zone,demonstrating satisfactory overall anti-seepage performance of the dam and its foundation.There are no significant seepage around the dam abutments on both sides.The seepage behavior of the surrounding rock mass of the spillway tunnel and the water conveyance tunnel are normal.The seepage discharge shows a positive correlation with the upstream reservoir water level,and the overall seepage volume displays a decreasing trend.In conclusion,the seepage behavior of the Yanshan Reservoir dam,its foundation,the spillway tunnel,and the water conveyance tunnel are generally normal.