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Evaluating the hydrological effects of the Three Gorges Reservoir based on a large-scale coupled hydrological-hydrodynamic-dam operation model
Zeng, Sidong1,2; Liu, Xin1,2; Xia, Jun1,2,3; Du, Hong4; Chen, Minghao1,2; Huang, Renyong5
2023-05-01
摘要Understanding the hydrological effects of the Three Gorges Dam operation in the entire reservoir area is significant to achieving optimal dam regulation. In this paper, a large-scale coupled hydrological-hydrodynamic-dam operation model is developed to comprehensively evaluate the hydrological effects of the river-type Three Gorges Reservoir. The results show that the coupled model is effective for hydrological, hydrodynamic regime and hydropower simulations in the reservoir area. Dam operation could have a notable positive effect on flood control and could reduce the maximum daily flood peak by up to 26.2%. It also contributes a large amount of hydropower, approximately 94.27 TWh/year, and a water supply increase for the downstream area of up to 22% during the dry season. In the flood season, the water level at Cuntan would increase under the condition that the water level of the dam is higher than approximately 158 m due to dam operation. In the dry season, attention should be paid to the low flow velocity near the dam in the reservoir area.
关键词hydrological effects Three Gorges Reservoir coupled model flood control
DOI10.1007/s11442-023-2117-7
发表期刊JOURNAL OF GEOGRAPHICAL SCIENCES
ISSN1009-637X
卷号33期号:5页码:999-1022
通讯作者Du, Hong(amydh2005@163.com)
收录类别SCI
WOS记录号WOS:000980419400006
语种英语