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                            Optimal allocation of regional drought-resistant water sources under
                                               different drought conditions



                                GUO Xi,LIANG Penghui,WU Zening,HE Chentao,CAO Qianqian






                           (Zhengzhou University,School of Water Conservancy and Transportation,Zhengzhou  China,450001)

                Abstract:Drought is one of the most common,serious,and destructive natural disasters in the world,and high-



                temperature extreme drought events pose a serious threat to water security in China. Aiming at the drought water allo⁃
                cation principles,constraints,objective function,and model construction under different drought conditions,based




                on the structural damage and functional loss mechanism of the drought water allocation system under different drought

                conditions,we established the optimization guidelines,objective function,constraints and scenario generation meth⁃



                ods of regional drought water allocation under general drought and extreme drought conditions. Furthermore,an opti⁃

                mization model of regional drought water allocation under different drought conditions was developed,with Chuxiong
                as an example for application validation. The results show that after the optimal allocation of drought-resistant water
                sources,under normal drought conditions,the total social water shortage in Chuxiong Prefecture is reduced to  18,


                         3



                830,100 m ,and the economic loss is reduced by 440 million yuan;under extreme drought conditions,the degree of

                water shortage damage in Chuxiong Prefecture is reduced to 14.54%,and the total damage to water source projects is

                reduced to  11.26%. In summary,the study of the regional drought water source optimization model can effectively

                reduce drought losses and the degree of damage to the water supply and demand system,improve the water supply

                guarantee rate for each water user,and provide technical support for improving the overall drought coping capacity of
                the region.




                Keywords:drought;exceptional drought;structural-functional impairment of water supply systems;optimal alloca⁃

                tion models;drought water sources
                                                                                     (责任编辑:韩  昆)
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