红水河
紅水河
홍수하
Hongshui River
2015年
4期
11-17,21
,共8页
冲沙孔%运行方式%大化水电站
遲沙孔%運行方式%大化水電站
충사공%운행방식%대화수전참
scour outlet%operation mode%Dahua hydropower station
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.
大化水電站已運行三十餘年,該排沙設施在減少泥沙對機組磨損、減少水庫淤積方麵髮揮瞭一定作用,隨著上遊大型水電站天生橋、龍灘、巖灘相應建成投入運行,大大改變瞭大化泥沙入庫沙量,如仍按以前運行方式,將會加劇排沙門槽和排沙廊道遲淘.為保證排沙廊道安全運行,通過對水庫不同運用期庫區來水來沙的變化、跼部水工模型和排沙廊道歷年運行資料及機組過流部件磨損情況的分析研究,提齣最優運行方式.
대화수전참이운행삼십여년,해배사설시재감소니사대궤조마손、감소수고어적방면발휘료일정작용,수착상유대형수전참천생교、룡탄、암탄상응건성투입운행,대대개변료대화니사입고사량,여잉안이전운행방식,장회가극배사문조화배사랑도충도.위보증배사랑도안전운행,통과대수고불동운용기고구래수래사적변화、국부수공모형화배사랑도력년운행자료급궤조과류부건마손정황적분석연구,제출최우운행방식.
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 in-coming sediment was dramatically changed due to the operation of upstream Tianshengqiao, Longtan, Yantan hy-dropower 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 pro-posed 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.
