摘要
蒲石河流域洪水陡涨陡落,峰高量大,一次洪水过程主要集中在1～2 d,流域输沙过程与洪水过程相应,但沙量较洪量更为集中,输沙量主要集中在几场大洪水过程中的几天内。为减小有效库容淤损和下水库进、出水口泥沙淤积,下水库宜采用非汛期抬高运行水位、汛期降低运行水位的"蓄清排浑"运行方式。大洪水来临时降低下水库水位至死水位运行,排沙比明显增大,库内淤积明显减少,特别是有效库容淤损大幅度减少。但启用水沙调度,亦存在一定风险,建议下一步开展深入的专题研究,以制订完整、具体且可操作性强的水沙调度方案。
The flood events in Pushihe River basin are usually short duration and high peak discharge process, and a flood process just lasts 1-2 days. The sediment transport process is corresponding to the flood process, but the sediment load is more concentrated than flood and is mainly concentrated in several major floods. In order to reduce sediment deposition in lower reservoir and the inlet and outlet, the lower reservoir will raise water level in non-flood season and reduce water level in flood season. Before the coming of great flood, the reservoir will temporarily reduce to death level. This operation scheme can significantly mitigate sediment deposition. This water and sediment scheduling is also has some risks which need to be studied in future for formulating a comprehensive, practical and operable scheduling scheme.
出处
《水力发电》
北大核心
2012年第5期7-9,共3页
Water Power
关键词
洪水特性
泥沙特性
调水调沙
风险
蒲石河抽水蓄能电站
flood characteristic
sediment characteristic
water and sediment scheduling
risk
Pushihe Pumped-storage Power Station
