摘要
通过总结近年来长江沿岸电厂取、排水口工程的模型试验研究成果,并以某电厂为例,指出了电厂取、排水工程应考虑的主要泥沙问题,即取、排水河段的河势、取水工程头部河底高程变化、取水口含沙量、临界不淤流速、泥沙起动流速等。为保证电厂安全、可靠、经济运行,提出了相应的工程措施:顺应河势选择取排水工程的合适位置,根据模型冲淤试验成果调整取排水口高程,采取适当的引水防沙措施和优化运行方式,提出管道内的临界不淤流速和起动流速等。
By summarizing model test achievements of the intake and drainage project for powerplants along the Yangtze river, we presented the main sediment issues which should be considered for the intake and drainage pro- ject： the fiver regime of intake and discharge segment, the variation of riverbed elevation at the head of intake, sediment concentration at the intake, non-depositing critical flow velocity, and incipient velocity. To ensure the safe and economical operation of powerplant, we proposed corresponding engineering measures to provide reference for the design of similar projects. These measures include selecting a proper location for drainage project according to the fiver regime, adjusting the elevation of drainage outlet based on model test results, adopting proper measures of water diversion, optimizing operation mode, and proposing critical non-silting flow velocity and incipient velocity of sediment in the pipe.
出处
《长江科学院院报》
CSCD
北大核心
2014年第8期1-5,共5页
Journal of Changjiang River Scientific Research Institute
关键词
水利工程
电厂
取、排水工程
泥沙问题
临界不淤流速
泥沙起动流速
hydraulic engineering
powerplant
water intake and drainage project
sediment problems
non-silting critical flow velocity
incipient velocity of sediment
