气候变化领域集成服务门户(CCPortal): A quantitative risk analysis model for cascade reservoirs overtopping: principle and application

CCPortal

DOI	10.1007/s11069-020-04167-6
	A quantitative risk analysis model for cascade reservoirs overtopping: principle and application
	Zhou X.; Chen Z.; Zhou J.; Guo X.; Du X.; Zhang Q.
发表日期	2020
ISSN	0921030X
起始页码	249
结束页码	277
卷号	104 期号:1
英文摘要	Quantitative and effective flood control operation of cascade reservoirs under emergency conditions can guarantee the safety of dams, reduce the social loss caused by flood disaster. A quantitative and practical risk analysis model of cascade dams overtopping breach (DAMSBREACH) has been developed based on the improvements to the analytical method of single dam breach. A single dam breach module, a flood routing module, a cascade dam overtopping and warning module have been assembled in the DAMSBREACH for predicting cascade dams overtopping flood and risk warning. The main improvements include a hyperbolic soil erosion model, the circular slip surface used in lateral enlargement modeling, and a numerical algorithm that uses velocity increment and allows straight forward calculation for the breach flood hydrograph. The DAMSBREACH is applied to Xiaerxia–Dawei–Shuangjiangkou of three cascade dams, which located in the upper reaches of Dadu river in southwest of China. The results show that only under the condition to open all release structures of Shuangjiangkou reservoir while Dawei dam starts to break, Shuangjiangkou reservoir will not be overtopped and the highest water level reaches 2507.56 m that is lower than the elevation of dam crest 2510.00 m. The integrated risk of cascade reservoirs has a direct relationship with the initial water level, uncertainty flood from the upstream, the discharge capacity and warning time of the reservoir. The risk analysis model of cascade dams overtopping break can help the decision-makers choose the best operation mode according to the characteristic of the reservoir under different emergency operating conditions. © 2020, Springer Nature B.V.
关键词	Cascade reservoirs Dam breach Dam break in cascade Flood routing Overtopping risk Risk warning Soil erosion rate
英文关键词	algorithm; dam failure; decision making; erosion rate; failure analysis; flood routing; overtopping; quantitative analysis; reservoir; risk assessment; river basin; soil erosion; China
语种	英语
来源期刊	Natural Hazards
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/206057
作者单位	China Renewable Energy Engineering Institute, Beijing, 100120, China; State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, Beijing, 100048, China; Department of Geotechnical Engineering, China Institute of Water Resources and Hydropower Research, Beijing, 100048, China; Power Construction Corporation of China, Beijing, 100048, China; National Hydropower Technology Research and Development Center, Beijing, 100120, China; Institute of Water Resources and Hydropower Engineering, Xi’an University of Technology, Xi’an, 710048, China
推荐引用方式 GB/T 7714	Zhou X.,Chen Z.,Zhou J.,et al. A quantitative risk analysis model for cascade reservoirs overtopping: principle and application[J],2020,104(1).
APA	Zhou X.,Chen Z.,Zhou J.,Guo X.,Du X.,&Zhang Q..(2020).A quantitative risk analysis model for cascade reservoirs overtopping: principle and application.Natural Hazards,104(1).
MLA	Zhou X.,et al."A quantitative risk analysis model for cascade reservoirs overtopping: principle and application".Natural Hazards 104.1(2020).