某水库排沙孔检修闸门更换方案比选研究  

Comparative study on scheme for replacement of bulkhead gate for desilting outlet of a reservoir

作　　者：叶冬冬[1] 魏陆宏[1] 

机构地区：[1]北京市水利规划设计研究院,北京100048

出　　处：《水利水电技术》2016年第1期117-119,共3页Water Resources and Hydropower Engineering

摘　　要：结合某70 m高混凝土双曲薄拱坝排沙孔进口检修闸门更换的方案比选,详细对比了放空水库方案与水下更换方案的优缺点。对比发现,两方案均不可行。放空水库方案主要是因为非技术方面的原因无法采用,水下浮体门封堵方案则存在一系列风险和限制条件,不适宜在本工程中采用。因此,下一步应加强水下修补技术的研究。Combined with the comparative selection of the replacement scheme for the bulkhead gate of the desihing outlet of a 70m high concrete double curvature thin arch dam, the merits and defects of both the scheme of reservoir emptying and the scheme of underwater replacement are compared in detail. It is found out from the comparison that both of them are unfeasible. The scheme of reservoir emptying eannot be adopted mainly due to the relevant non-technical reasons, while the scheme of under- water plugging with floating gate is not suitable for this project, as a series of risks and restrictions are there. Therefore, it is pointed out that the study on the underwater repairing technology must be intensified.

关 键 词：大坝 排沙孔 检修闸门 水下更换 方案比选 

分 类 号：TV314[水利工程—水工结构工程]