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Quantitative method for flood control benefits of river training works based on the
assessment of comprehensive flood losses
1 1 1 1 2 1
ZHANG Yadong ,LI Zongkun ,GE Wei ,XU Hongyin ,CHEN Lijun ,WANG Te
(1.School of Water Conservancy and Transportation,Zhengzhou University,Zhengzhou 450001,China;
2.Henan Water Conservancy Survey Design and Research Co.,Ltd.,Zhengzhou 450016,China)
Abstract:When calculating the flood control benefits (FCBs)of river training works by comparing the economic
losses caused by floods before and after the work,the composition of FCBs is not fully considered,which reduces the
rationality of the calculated FCBs. The FCBs of river training works were defined conceptually in this study,includ⁃
ing economic benefits,life benefits,and environmental benefits. By introducing the value of a statistical life,the
monetary quantification method of life losses caused by floods was proposed. After screening the key factors affecting
the loss of environmental value caused by floods,the calculation function of environmental loss rate was constructed.
The environmental impact caused by floods was quantified in terms of currency,based on the value of ecosystem ser⁃
vices. The assessment method for comprehensive flood losses was proposed combined with the economic damages
caused by floods. A quantitative method considering comprehensive flood losses was proposed for calculating FCBs of
river training works with simplified frequency method. The research results provide effective tools for quantifying
flood losses and calculating FCBs of hydraulic engineering.
Keywords:flood control benefits;frequency method;economic loss;life loss;environmental impact
(责任编辑:耿庆斋)
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