Forensic engineering analysis applied to flood control

JOURNAL OF HYDROLOGY

卷:594

Article

Delpasand, Mohammad¹  Fallah-Mehdipour, Elahe²  Azizipour, Mohamad³  Jalali, Mohammadreza⁴  Safavi, Hamid R.⁵  Saghafian, Bahram⁶  Loaiciga, Hugo A.⁷  Babel, Mukand Singh⁸  Savic, Dragan^9,10  Bozorg-Haddad, Omid¹ 

[1] Univ Tehran, Coll Agr & Nat Resources, Fac Agr Engn & Technol, Dept Irrigat & Reclamat Engn, Karaj 3158777871, Iran

[2] Moshanir Consultant Co, Dept Water & Energy, Tehran, Iran

[3] Shahid Chamran Univ Ahvaz, Fac Civil & Architectural Engn, Ahvaz, Iran

[4] Islamic Azad Univ, Dept Civil Engn, Prof Hesabi Branch, Tafresh, Iran

[5] Isfahan Univ Technol, Dept Civil Engn, Esfahan, Iran

[6] Islamic Azad Univ, Dept Civil Engn, Sci & Res Branch, Tehran, Iran

[7] Univ Calif Santa Barbara, Dept Geog, Santa Barbara, CA 93106 USA

[8] Asian Inst Technol, Khlong Nueng, Thailand

[9] KWR Water Res Inst, Nieuwegein, Netherlands

[10] Univ Exeter, Ctr Water Syst, Exeter, Devon, England

关键词: Forensic engineering;    Flood events;    Reservoirs;    Flood Criteria;    Flood management;   

DOI  :  10.1016/j.jhydrol.2021.125961

来源: Elsevier

【 摘 要 】

Floods have various impacts, including loss of life and damage to property. Flood- management reservoirs can help mitigate floods, but their operation can also worsen flood impacts. This paper presents a novel forensic engineering approach to assess the role of reservoir operation on flood control. Fourteen criteria are employed for assessing forecast-based prereleases of water from reservoir storage to reduce the impact of flooding. The proposed approach is applied for forensic assessment of the system performance of reservoirs during the large flood of 2019 in southwestern Iran (the Great Karun Basin). The two main study areas are in the sub-basins of Karun and Dez. Results concerning two key performance criteria (the peak discharge reduction (PDR) and flood volume reduction (FVR)) show the PDR criterion in the Karun sub-basin multi-reservoir system reached about 79% (where 100% is the theoretically best performance) under historic operations (actual operating conditions in 2019), and improved from 8 to 19% if various prerelease operations were made. The FVR achieved about 33% in the historical situation and improved from 20 to 59% under prerelease operations scenarios, respectively. The PDR criterion achieved 26% under the historical scenario, but with better operation could exceed 55% in the Dez sub-basin multi-reservoir system, whereas FVR was as low as 11% in 2019 but could be raised to between 15 and 25% under prerelease operations. This forensic work's assessments establish that improved reservoir operation could be achieved by applying specialized operation approaches.

【 授权许可】

Free