Analysis of Dam Base Processing and Its Jet-grouting Handling Measure of Gansu Dongxia Reservoir

This job focuses on the engineering geological condition and existing problems of Gansu Dongxia reservoir since it was finished,and explores the characteristics of the dam base through drilling,sampling and testing.On this basis,the main causes of leakage of the dam base are analyzed and the leakage volume is estimated by theoretical computation.The research shows the main reason is the leakage of both shores of the main river channel.The leakage problem has been resolved by filling slurry with high pressure.The effectiveness of the presented method is validated by observation and testing in a long term.