长江上游沙卵石河床整治建筑物损毁原因与对策分析

Damage cause of waterway regulating structures and countermeasure analysis for sand-pebble shoal in upper of the Yangtze River

长江上游多沙卵石滩险,水流湍急,泥沙输移强度大,航道整治建筑物水毁现象较为常见。通过归纳建筑物损毁部位,分析发生损毁的原因,总结近年维修实践成果,提出了混凝土坝面、扭王字混凝土块护面和抛石跺体等能适应类似于长江上游河床地质和水沙条件,有利于建筑物稳定的结构设计,可为整治工程建设和维护提供参考。

There are many sand-pebble shoal in the upper stream of the Yangtze River. Because the hydraulic power and sediment transport are strong, regulating structures are usually destroyed. The paper sums up the damage position and analyses the reason of damage. Stabilization fabrics are recommended on the basis of maintaining practice for several years.the including dam concrete surface, accropode, and riprap-stack, ect., which have been applied to the upper reach of the Yangtze River etc. The conclusion may be refered to for maintenance or construction of waterway regulation engineering.