Se San second cascade hydropower station with the installed capacity of 400MW is the largest one under construction in Cambodia now. All indicators of the high pressure jet grouting cutoff wall meet the design requirements. After completion of excavation and drainage pumping, the cofferdam is basically in watertight, which ensures the progress of base pit excavation and concrete pouring and guarantee the development of the follow-up work.%桑河二级水电站装机容量为400MW，目前为柬埔寨在建的最大水电站。高喷防渗墙的各项指标达到设计要求，基坑抽排水完成后，上下游围堰基本处于滴水不漏，确保了基坑开挖和砼浇筑顺利进展，为桑河二级水电站后续工作的顺利开展提供了可靠保障。
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