DOI: 10.1007/s11069-020-04167-6
论文题名: A quantitative risk analysis model for cascade reservoirs overtopping: principle and application
作者: Zhou X. ; Chen Z. ; Zhou J. ; Guo X. ; Du X. ; Zhang Q.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2020
卷: 104, 期: 1 起始页码: 249
结束页码: 277
语种: 英语
中文关键词: 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
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. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/168856
Appears in Collections: 气候变化与战略
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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
Recommended Citation:
Zhou X.,Chen Z.,Zhou J.,et al. A quantitative risk analysis model for cascade reservoirs overtopping: principle and application[J]. Natural Hazards,2020-01-01,104(1)