Construction Diversion Risk Assessment for Hydropower Development on Sediment-Rich Rivers

Zida Song, Quan Liu, Zhigen Hu, Chunsheng Zhang, Jinming Ren, Zhexin Wang and Jianhai Tian
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Zida Song: School of Water Resources and Hydropower Engineering, Wuhan University, Wuhan 430072, China
Quan Liu: School of Water Resources and Hydropower Engineering, Wuhan University, Wuhan 430072, China
Zhigen Hu: School of Water Resources and Hydropower Engineering, Wuhan University, Wuhan 430072, China
Chunsheng Zhang: Yellow River Engineering Consulting Co., Ltd., Zhengzhou 450003, China
Jinming Ren: Powerchina Huadong Engineering Co., Ltd., Hangzhou 311122, China
Zhexin Wang: Powerchina Huadong Engineering Co., Ltd., Hangzhou 311122, China
Jianhai Tian: Powerchina Huadong Engineering Co., Ltd., Hangzhou 311122, China

Energies, 2020, vol. 13, issue 4, 1-20

Abstract: Hydropower is an important renewable energy, and Construction Diversion Risk (CDR) should be highlighted and assessed during hydropower development. Since sediment-rich rivers are widely existing around the world and have great hydro-energy potential, assessing CDR for hydropower development on sediment-rich rivers in terms of engineering feasibility is of significance. This paper proposes a CDR assessment method for the sediment-rich hydropower development environment. The method is concise and practical, reflects diversion uncertainties and correlation, and mainly adopts the Gumbel–Hougaard Copula and the Monte Carlo Simulation. Through simulating flood evolution and sediment impact during diversion, the method can assess CDR basing on the cofferdam overtopping probability. Case results show that the proposed method can achieve CDR assessment on a sediment-rich river and highlights sediment impact on the diversion risk. Through results discussion, the risk feature of construction diversion on sediment-rich rivers is revealed, that sediment impact causes the dynamic and yearly-risen CDR. Hence, our conclusions are: (1) the proposed method is feasible, effective and has industrial potential, and (2) a diversion scheme on sediment-rich rivers is suggested that adopts the design with high or yearly-heightening cofferdams, based on the advanced CDR assessment to cope with the risk features of sediment-rich diversion environments.

Keywords: hydropower development; construction diversion risk assessment; sediment-rich river (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
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