Print Email Facebook Twitter Calculation of dam risk probability of cascade reservoirs considering risk transmission and superposition Title Calculation of dam risk probability of cascade reservoirs considering risk transmission and superposition Author Wang, Te (Zhengzhou University) Li, Zongkun (Zhengzhou University) Ge, W. (TU Delft Safety and Security Science; Zhengzhou University) Zhang, Yadong (Zhengzhou University) Jiao, Yutie (Zhengzhou University) Sun, Heqiang (Zhengzhou University) Zhang, Hua (Zhengzhou University) Date 2022-06 Abstract Because of the risk transmission and superposition among dams in cascade reservoirs, the analysis and probability calculation of dam risk become more complex compared with a single reservoir. By analyzing the main risk sources and actionmechanisms, the disaster-causing factors, disaster-transmitting body and disaster-bearing body in the cascade reservoirs system were determined. By defining the influence coefficient (IC) to express the transmission and superposition degree of dam risk among cascade reservoirs, dam risk was divided into two parts: own risk (OR) and additional risk (AR). On this basis, the relevant concepts and equations for the calculation of the dam risk probability of cascade reservoirs were proposed. The numerical simulation was carried out to quantify the IC, and a Bayesian network analysis model was constructed to calculate the OR. Finally, taking five cascade reservoir dams in the Dadu River basin as examples, the value of their ORs, ARs and risk probabilities were calculated, and thereafter the weakest cascade, controlling cascade and general cascade in the system were divided. The proposed methodology realizes an effective connection with the dam risk calculation method of a single reservoir, which can provide a reference for the risk assessment and management of cascade reservoirs in the basin. Subject Cascade reservoirsDam breakProbabilityRisk superpositionRisk transmission To reference this document use: http://resolver.tudelft.nl/uuid:aa6b67ad-6801-43eb-9772-2e96a75211f1 DOI https://doi.org/10.1016/j.jhydrol.2022.127768 Embargo date 2023-07-01 ISSN 0022-1694 Source Journal of Hydrology, 609 Bibliographical note Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2022 Te Wang, Zongkun Li, W. Ge, Yadong Zhang, Yutie Jiao, Heqiang Sun, Hua Zhang Files PDF 1_s2.0_S0022169422003432_main.pdf 3.55 MB Close viewer /islandora/object/uuid:aa6b67ad-6801-43eb-9772-2e96a75211f1/datastream/OBJ/view