摘要
对巴基斯坦某多泥沙河流上建设的引水发电枢纽的引水防沙问题展开研究,模拟了沉砂池的效率。提出"以库代池",即采用"壅水沉沙,敞泄排沙"运用方式的非工程措施来替代修建沉沙池的工程措施,来防止推移质以及悬移质中的粗粒径泥沙进入取水口,使电站过机多年平均含沙量和多年平均粗粒径含沙量均限定于允许值范围内,达到减少对水轮机及过流部件磨损的目的。
For the water diversion type of a power generation system to be built on a sediment-laden river in Pakistan, a river diversion measure has been studied to control sediment, including simulating the efficiency of a desilting basin.Thus a method serving the above purpose is generated, i.e.＂using a reservoir rather than a desilting basin＂.More exactly, a non-engineering measure, known as that sediment is settled in and discharged from a reservoir during water storage and release periods respectively, is adopted instead of a conventional desilting basin to prevent the bottom load and coarse grain of suspended load from flowing into intake.With the proposed measure, both mean annual sediment concentration and its coarse particle concentration through the units will be limited to a permitted range, and the abrasion of sediment to the turbines and relevant components will be reduced subsequently.
出处
《广东水利水电》
2015年第9期4-6,25,共4页
Guangdong Water Resources and Hydropower
关键词
多泥沙河流
沉沙池
以库代池
推移质
悬移质
sediment-laden river
desilting basin
using a reservoir rather than a desilting basin
bottom load
suspended load
