浅谈沉沙池的布置

Discussion on the Layout of Silting Basin

在多沙河流建设水电站时,为了减少泥沙对水轮机组的磨损,往往需要设置沉沙池,尤其是沙质硬度较大、水头较高的引水式水电站就更有必要设置沉沙池。尼泊尔某水电站沉沙池的布置,既避免了沙子在引水渠内沉淀堵塞,又使得进入沉沙池内的目标沙粒能够沉淀下来并且顺利排走,满足沉沙池的使用功能,且运行方便。现结合该沉沙池的布置谈谈其设计方法及思路。

When building hydropower stations in sandy rivers,in order to reduce the wear of sediment on hydroturbines,it is often necessary to set up silting basin,especially for diversion type hydropower stations with higher sand hardness and head.The layout of the silting basin of a hydropower station in Nepal not only avoids the sand deposition and blockage in the diversion canal,but also enables the target sand particles entering the silting basin to precipitate and discharge smoothly,which satisfies the use function of the silting basin and is convenient to operate.In this paper,the design method and ideas of the silting basin are discussed in combination with the layout of the silting basin.