大化水电站冲沙孔运行方式优化研究  

Study on Optimization of Operation Mode of Scour Outlet in Dahua Hydropower Station

作　　者：覃承贵 李炳坚 

机构地区：[1]广西桂冠电力股份有限公司大化水力发电总厂,广西大化530800 [2]广西水电科学研究院,广西南宁530021

出　　处：《红水河》2015年第4期11-17,21,共8页Hongshui River

摘　　要：大化水电站已运行三十余年,该排沙设施在减少泥沙对机组磨损、减少水库淤积方面发挥了一定作用,随着上游大型水电站天生桥、龙滩、岩滩相应建成投入运行,大大改变了大化泥沙入库沙量,如仍按以前运行方式,将会加剧排沙门槽和排沙廊道冲淘。为保证排沙廊道安全运行,通过对水库不同运用期库区来水来沙的变化、局部水工模型和排沙廊道历年运行资料及机组过流部件磨损情况的分析研究,提出最优运行方式。Dahua hydropower station has been put into operation for more than 30 years, whose desilting facilities played an important role in lessening sediment wear on unit and in reducing siltation in reservoir.However,the incoming sediment was dramatically changed due to the operation of upstream Tianshengqiao, Longtan, Yantan hydropower stations. The scouring on sand- flushing gate slot and gallery will be greatly increased in case of adopting the original operation mode. To ensure safe operation of the sand- flushing gallery, an optimized operation mode is proposed for Dahua hydropower station through analyzing and studying the changes of incoming water and sediment of reservoir area in different operating periods as well as the local hydraulic model and the historical running data of sand- flushing gallery.

关 键 词：冲沙孔 运行方式 大化水电站 

分 类 号：TV697[水利工程—水利水电工程]