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Study on Joint Regulation of Runoff and Sediment of Water Supply Reservoirs in Sediment-Laden River Dongzhuang Reservoir of Jinghe River
There is independence and integration between water supply and sediment reduction in sediment-laden river reservoirs. How to maintain effective storage capacity and meet water supply requirements for a long time is one of the problems to be solved in the efficient operation of sediment-laden river reservoirs. In this paper, Dongzhuang Reservoir of Jinghe River is taken as the research object. Through the analysis of measured data and mathematical model calculation, the measured hydrological sediment and cross-section erosion and deposition in the lower reaches of Jinghe River and Weihe River are analyzed. The reservoir sediment discharge flow index which is beneficial to reduce the sediment deposition in the lower reaches of Weihe River and maintain the effective reservoir capacity for a long time is studied, and the joint regulation mode of reservoir runoff and sediment is put forward. The results show that the sediment regulation of Dongzhuang Reservoir during the sediment retention period is mainly to reduce the deposition of the lower reaches of the Weihe River, and the sediment regulation during the normal operation period of the reservoir is mainly to maintain the effective storage capacity of the reservoir for a long time. The joint regulation of the Dongzhuang Reservoir and the surrounding four storage reservoirs, such as the Ganhe Reservoir, the Xijiao Reservoir, the Longtan Reservoir, and the Helan Reservoir, can reduce the deposition of the lower reaches of the Weihe River by 11 million tons per year, increase the guarantee rate of agricultural irrigation from 30 to 50%, and increase the guarantee rate of industrial water supply from 57 to 95%. And the outflow of the reservoir meets the requirements of the ecological base flow of the river. The research results provide technical support for the optimal operation of reservoirs in sediment-laden rivers.
Study on Joint Regulation of Runoff and Sediment of Water Supply Reservoirs in Sediment-Laden River Dongzhuang Reservoir of Jinghe River
There is independence and integration between water supply and sediment reduction in sediment-laden river reservoirs. How to maintain effective storage capacity and meet water supply requirements for a long time is one of the problems to be solved in the efficient operation of sediment-laden river reservoirs. In this paper, Dongzhuang Reservoir of Jinghe River is taken as the research object. Through the analysis of measured data and mathematical model calculation, the measured hydrological sediment and cross-section erosion and deposition in the lower reaches of Jinghe River and Weihe River are analyzed. The reservoir sediment discharge flow index which is beneficial to reduce the sediment deposition in the lower reaches of Weihe River and maintain the effective reservoir capacity for a long time is studied, and the joint regulation mode of reservoir runoff and sediment is put forward. The results show that the sediment regulation of Dongzhuang Reservoir during the sediment retention period is mainly to reduce the deposition of the lower reaches of the Weihe River, and the sediment regulation during the normal operation period of the reservoir is mainly to maintain the effective storage capacity of the reservoir for a long time. The joint regulation of the Dongzhuang Reservoir and the surrounding four storage reservoirs, such as the Ganhe Reservoir, the Xijiao Reservoir, the Longtan Reservoir, and the Helan Reservoir, can reduce the deposition of the lower reaches of the Weihe River by 11 million tons per year, increase the guarantee rate of agricultural irrigation from 30 to 50%, and increase the guarantee rate of industrial water supply from 57 to 95%. And the outflow of the reservoir meets the requirements of the ecological base flow of the river. The research results provide technical support for the optimal operation of reservoirs in sediment-laden rivers.
Study on Joint Regulation of Runoff and Sediment of Water Supply Reservoirs in Sediment-Laden River Dongzhuang Reservoir of Jinghe River
Lecture Notes in Civil Engineering
Wang, Weiqiang (editor) / Wang, Chengzhi (editor) / Lu, Yang (editor) / Chen, Cuixia (author) / Wang, Haixia (author) / Luo, Qiushi (author) / Wen, Zhichao (author) / Liu, Junxiu (author) / Wang, Tiange (author)
2024-11-08
15 pages
Article/Chapter (Book)
Electronic Resource
English
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