涵管、溢洪道下游冲刷的处理

• 出 处: 水利科技
• 发表日期: 1976年02期
• 关键词: 石枕 溢洪道 竹石 泄水建筑物 下游水位 丝笼 石笼 抢护 消能 铺放

泄水建筑物的下游一般如消能设备不良、护堤长度不够、质量不好以及下游水位发生变化,往往发生冲刷,危及主体工程的安全。护堤发生冲刷时,应拋块石、土袋、竹石笼、柳石枕、铅丝石笼等抢护。所抛石块应尽量选用大的。用竹石笼、柳石枕、铅丝笼时要尽量铺放整齐牢固(见图19、20),还可以采取抬高尾水位的办法,以缩小上下游水位差,减少冲刷。

In general, the downstream of discharge structures often have erosion such as poor energy-dissipating equipment, inadequate berm length, poor quality and changes in downstream water level, which may endanger the safety of the main project. Embankment erosion occurs, should throw litter, soil bags, bamboo cage, willow pillow, wire gabion and other snatches. The riprap should try to use large. Use bamboo gabion, willow pillow, lead wire cage should be laid neat and tidy (see Figure 19, 20), but also can take to raise the tail water level approach to reduce the upstream and downstream water level difference and reduce erosion.