Calculation and Analysis of Sedimentation at Altas Hydropower Station
Altas Hydropower Station is the eighth hydropower station in the cascade development plan on the Karakash River.It is a water conservancy project focusing on hydropower generation.In order to coordinate the relationship between reservoir sedimentation and reservoir benefits and provide a basis for determining the scale of the project,it is necessary to carry out calculation and analysis of reservoir sedimentation.This paper first established a one-dimensional mathematical model of unbalanced sediment transport by non-uniform flow.Based on the measured cross-sections,inlet water and sediment series and other data,the sediment deposition and distribution in different periods after the completion of the hydropower station were calculated and analyzed,and the sediment discharge from the reservoir was demonstrated.The results show that when the reservoir has been in operation for 30 years,the siltation volume of the dead storage capacity accounts for 73.3％of the initial dead storage capacity,and the adjusted storage capacity is reduced by 33.0％.If the water level is not lowered to discharge sediment during the flood season,the average annual power generation for many years is 145.8％more than the condition when the dead water level is lowered.
Altas hydropower stationone-dimensional water and sediment modelsedimentationsedimentation formoperation water level for sediment scheduling
万方数据
维普
