Numerical Simulation of Dam-Break Flood Routing in Pumped Storage Power Stations with Multi-Conditions and Disaster Impact Analysis

Baojun Guan, Jingming Hou (), Jiahao Lv, Donglai Li, Guangzhao Chen, Yuan Fang and Lei Shi
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Baojun Guan: Xi’an University of Technology
Jingming Hou: Xi’an University of Technology
Jiahao Lv: Xi’an University of Technology
Donglai Li: Xi’an University of Technology
Guangzhao Chen: Xi’an University of Technology
Yuan Fang: Shaanxi Weihe Ecological Technology Research and Development Company Limited
Lei Shi: Shaanxi Weihe Ecological Technology Research and Development Company Limited

Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), 2025, vol. 39, issue 2, No 10, 757 pages

Abstract: Abstract With the extensive construction of pumped storage power stations, understanding the evolution, propagation laws, and factors influencing downstream dam-break floods is essential for effective disaster prevention and mitigation. This paper examines a specific pumped storage power station and develops a numerical model that integrates the dynamics of dam-break floods with the evolution of breach formation. Four dam-break scenarios were created to simulate various situations. The findings indicate that: First, peak flows increase in certain river sections due to changes in river geometry and water diversion/confluence during the evolution of dam-break floods. Second, the analysis shows that damage from a single reservoir’s dam break is less severe than that from two reservoirs. Damage varies with distance from the dam: upstream areas experience relatively minor combined dam damage, while instantaneous full dam break damage is greatest; downstream, instantaneous full dam break damage is less harmful than combined dam breaks, which are the most damaging. These variations are attributed to morphological differences and disparities in total water volume under different conditions during the dam-break flood process. This study provides a scientific basis for responding to dam-break floods and conducting flood relief efforts.

Keywords: Pumped storage power station; Dam failure; Dam break model; Numerical simulation; Dam break flood evolution (search for similar items in EconPapers)
Date: 2025
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DOI: 10.1007/s11269-024-03987-6

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