苏只水电站消力池底板排水管渗水带泥原因分析及处理设计

Cause Analysis and Handling Design of Seepage with Mud from Drainage Pipe in Base Slab of Stilling Basin,Suzhi Hydropower Project

针对苏只水电站消力池底板基础排水管渗水带泥问题,从设计、运行角度分析了消力池可能的破坏原因,并采用综合示踪法进行流场测试分析,基本确定了渗漏原因和通道。处理时对消力池进行放空清淤检查,印证了分析结论:渗水带泥是由于消力池底板表面混凝土及结构缝止水破坏引起的。提出了相应的修复处理方案,处理措施取得了良好的效果。

Aiming at seepage with mud from drainage pipe in base slab of stilling basin, Suzhi Hydropower Project, possible failure causes of the stilling basin are analyzed in terms of design and operation.Furthermore, the general tracking method is applied to analyze the flow field test.Finally, seepage cause and passage are determined basically.The stilling basin is inspected by emptying and sludge removal while handling is performed.The analysis conclusion is verified.Namely, seepage with mud is from the failures of waterstops of the sur-face concrete and structure joints of the base slab of the stilling basin.Corresponding repair scheme is proposed.The handling measures achieve excellent effect .