Underwater Treatment Technology of Transverse Joint Leakage of the Dam Structure of Jinghong Hydropower Station
In view of the water leakage in the transverse joint of dam section 12#—13# of Jinghong Hydropower Station,the project has designed a scheme of using underwater chemical grouting for the transverse joint of the structure and setting surface joint water sealing on the upstream underwater surface through earlier underwater ROV inspection and analysis of relevant monitoring data.The specific method is to use LW/HW environmental-friendly water-soluble polyurethane grouting material to block the leakage channel,and the surface joint is sealed by SR anti-seepage system.This method eliminates the leakage of the transverse joint,and the anti-seepage effect is remarkable.