湖泊科学2024，Vol.36Issue(5)：1550-1561,12.DOI:10.18307/2024.0544
小浪底水库汛前调水调沙模拟与综合效益评估
Modelling of the flow and sediment regulation processes before flood seasons in the Xiao-langdi Reservoir and evaluation of comprehensive benefits
摘要
Abstract
To improve the comprehensive benefits of the Xiaolangdi Reservoir in gaming among multi-objectives during the flow and sediment regulation processes before flood seasons,an integrated model has been proposed,which can simulate the flow-sediment transport in the reservoir area and quantitatively evaluate the comprehensive benefits of reservoir operation.The integrated model consists of three sub-modules,including:a flow-sediment transport module,which considers the process of turbidity currents and flow exchanges between the mainstream and tributaries;a reservoir regulation module,which serves as a connection between the flow-sediment simulation in the reservoir area and the calculation of channel deformation volume in the Lower Yellow River;a ben-efit evaluation module,which adopts an economic indicator to measure the comprehensive benefits.Flow and sediment regulation e-vents in the Xiaolangdi Reservoir in 2013 and 2014 were used for model calibration and verification,showing that the whole proces-ses of plunging,transport and venting of turbidity current,as well as the outflow and power generation processes,were in good a-greement with the measured data.Key operation parameters were selected based on the practical experience of flow-sediment regula-tion events over the years.Based on the 2014 actual operation process,5 new operation schemes were designed by reducing the connecting water level or decreasing the degree of backwater,and comprehensive benefits of these five operation schemes were as-sessed.Calculation results showed that the changes of connecting water levels and backwater conditions in a reservoir regulation process would have a conflict between sedimentation reduction and water conservancy.By comparing the economic indicators of de-signed operation schemes,the operation scheme with the connecting water level of 222.57 m and less backwater has been suggested for gaining higher comprehensive benefits in the Xiaolangdi Reservoir.关键词
汛前调水调沙/水库调度/综合效益/数值模拟/小浪底水库Key words
Flow and sediment regulation/reservoir operation/comprehensive benefits/numerical simulation/Xiaolangdi Reser-voir引用本文复制引用
夏军强,张贤梓依,王增辉,陈翠霞,周祖昊..小浪底水库汛前调水调沙模拟与综合效益评估[J].湖泊科学,2024,36(5):1550-1561,12.基金项目
国家自然科学基金项目(U2243238)和国家重点研发计划项目(2023YFC3209304)联合资助. （U2243238）
