Analysis of Cause of Abnormal Seepage for Xixi RCC Dam

The abnormal foundation uplift pressure increases suddenly for the Xixi RCC gravity dam.Therefore,monitoring data are used to systematically analyze the cause of uplift pressure.Then combined with positive and negative analysis of dam seepage with finite element,some suggestions are proposed to remove seepage hidden peril,such as strengthening observation and analysis,grouting and drainage for seepage abnormal position.The results show that the current seepage control function of the dam foundation is good on the whole and the abnormal seepage does not pose great threat to the dam.