大通河天王沟水电站泥沙设计重点问题探讨

天王沟水库坝前水深和库容都较小,且入库沙量相对较多,库沙比仅为0.8,所以水库很快淤积平衡,库区泥沙问题较为严重。天王沟水电站工程泥沙问题主要是研究水库回水与上游铁城电站尾水合理衔接以及保持进水口前＂门前清＂,通过对入库水沙分析提出的水库泥沙调度运行方式及防排沙措施,基本解决了电站的主要工程泥沙问题。

Study on Key Points of Sediment Handling Design of Tianwanggou Hydropower Project

Both water depth and storage capacity before the dam of Tianwanggou Hydropower Station are lower.Furthermore,inflow sediment is in a large quantity relatively.The ratio of storage capacity to annual sediment runoff is 0.8 only.Therefore,sediment deposition of the reservoir is balanced rapidly.The sediment in the reservoir area is quite serious accordingly.The study on sediment handling of Tianwanggou Hydropower Station focuses on the reasonable connection of the return water of the reservoir to the tailrace water of Tiecheng Hydropower Station at upstream as well as how to keep power intake free from sediment.The sediment dispatching operation modes and measures for sediment prevention & discharge raised through analysis on inflow water and sediment basically deal with the main sediment of the Station.