摘要
本文通过对龚嘴水库实行汛期按流量级控制运用以来，库床冲淤变化的观测、结合沿程水位资料的分析，说明充分利用入库水、沙变化的有利时机，适当抬高或降低坝前水位，使库床在冲淤变化中实现年内基本平衡，以保持必需的调节库容。减轻库尾回水抬高程度，是合理解决发电与排沙矛盾的有效途径。坝前含沙量具有明显的横向不均匀分布和沿垂线的梯度分布，合理运用底孔是解决“门前清”，减少粗沙过机的重要途径。
Under the consideration of the observation of mud flushing of resrevoir bed and data for water le-vel along river length since Gongzui reservoir starting operation according to discharge magnitide control inflood season,it is shown that the water level before dam should be suitably raised or lowered at changing mo-ment of reservoir water and silt. So the reservoir bed become approximately equilibrium when changing of de-posit flushing in a year that necessary regulating storage is maintained.The realistic and effective way to rea-sonably solve the problem of power generation and sand flushing is to lower the backwater level at end of thereservoir.The silt charge before dam is transversely non-uniform distributed and grandiently distributed along plumb line. The main way to clean the silt before intake and reduce the amountof the coarse sand through turbine is reasonable use of bottom outlet.
出处
《四川水力发电》
1994年第1期29-35,41,共8页
Sichuan Hydropower
关键词
水库
库床演变
泥沙
高坝
control water level by magnitude of flow,deposit and flushing of reservoir bed,regulating sto-rage,distribution of silt charge,efficiency of sand flushing,simultaneous water level.
