In order to ensure that the seepage prevention and cutoff wall of cofferdam of hydropower station can achieve the expected seepage prevention effect,the project situation of Mawo Hydropower Station is briefly intro-duced by using case analysis,and the mode and structure of masonry cut-off wall are determined according to the ac-tual situation.The application measures of underwater construction technology of bagge clay in cofferdam seepage pre-vention cutoff wall are put forward,and the construction details are controlled according to the process flow,and then the construction effect is verified.The research results show that the average water seepage of the upstream and down-stream cofferdams of the Mawo Hydropower Station project is in the range of(8.4×10-7～2.7×10-6)cm/s and(4.42×10-7～1.18×10-6)cm/s,which meets the requirements of seepage prevention and improves the quality of the project.
关键词
水电站/围堰防渗截水墙/袋装黏土/水下施工
Key words
Hydropower station/Cofferdam seepage prevention and cutoff wall/Bagged clay/Underwater construction
维普
万方数据