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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


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