Study on the Staged Operation of a Multi-Purpose Reservoir in Flood Season and Its Effect Evaluation

Water

卷:13

Can Zhu¹  Xingbi Lei¹  Chongxun Mo¹  Guikai Sun¹  Yuli Ruan¹  Zhenxiang Xing² 

[1] College of Architecture and Civil Engineering, Guangxi University, Nanning 530004, China;

[2] School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Haerbin 150006, China;

关键词: effect evaluation;    fractal method;    flood season staging;    multi-purpose reservoir;    probability of exceedance;    staged operation;   

DOI  :  10.3390/w13182563

来源: DOAJ

【 摘 要 】

A reasonable analysis of flood season staging is significant to the management of floods and the alleviation of water shortage. For this paper, the case of the Chengbi River Reservoir in China was selected for study. Based on fractal theory, the flood season is divided into several sub-seasons by using four indexes (multi-year average daily rainfall, multi-year maximum rainfall, multi-year average daily runoff, and multi-year maximum daily runoff) in this study. Also the Benefit-Risk theory is applied to evaluate the effects of staged dispatching. The results show that the flood season of the Chengbi River basin should be divided into the pre-flood season (13 April–6 June), the main flood season (7 June–9 September) and the post-flood season (10 September–31 October). After adjusting the flood limit water level for sub-season and benefit assessment, the probability of exceedance after reservoir flood season operation increases by $0.13\times {10}^{-5}$, the average annual expected risk is 0.2264 million RMB, and the average annual benefit increases by 0.88–1.62 million RMB. The benefits obtained far outweigh the risks, indicating the importance of staging the flood season.

【 授权许可】

Unknown