Research On Water Resources Allocation In Laizhou City Based On Mike Basin Model

The 18 th National Congress of the Communist Party of China proposed to solve the "last mile" of people's livelihood.The "last mile" of water conservancy work is that "people can drink safe and healthy water." The key and difficult point is the guarantee of drinking water safety for rural residents.Based on the Laizhou urban-rural water supply integration project planning project,based on the analysis of Laizhou's water demand,water resources endowment conditions,existing water conservancy project conditions,and water supply capacity,the Laizhou water resource allocation is constructed through a supply-demand balance analysis.The model implements the integrated urban-rural water supply pattern of Laizhou City through the optimal dispatching and water resource allocation of multiple water sources,thereby ensuring the water supply safety of Laizhou City.To this end,the main research focus of this article is: in order to meet the steady development of Laizhou's economy and society,to practically solve the water problem in Laizhou,and to respond to the country's call to focus on people's livelihood,this paper reviews the status of urban-rural integration in Laizhou Analyze and forecast the planning year,optimize the allocation of limited water resources,so that more water users can drink "reliable water" and "safe water",improve the level of rural water supply security,and promote the integration of urban and rural water supply.The main research contents are as follows:(1)Analysis of water supply and demand in LaizhouAccording to the 2014-2017 Laizhou Water Resources Bulletin,the Laizhou Statistical Yearbook(2018)and relevant planning of Laizhou,the quota method and grey correlation analysis method are used to predict the short-term planning year 2025 and the long-term planning year 2030.The total water demand is 42.4 million m3 in 2025 and 45.9 million m3 in 2030.At the same time,because this paper is aimed at the urban-rural integration water distribution project in Laizhou City,the irrigation water demand is not considered for the time being.Water supply sources include local surface water,local groundwater(emergency backup water source),external water transfer,and unconventional water.Under the condition of 95% rainfall frequency,the maximum water supply in planned year 2025 is 146.06 million m3,and the maximum water supply in 2030 is 149.06 million m3.(2)Construction of water resources allocation model based on Mike BasinFirst,set the distribution locations of reservoirs,water users,and water supply pipelines in the area according to the actual situation.In the model,the current situation of water resources development and utilization is summarized as "points,lines,and areas",so that the model is closer to the integrated urban-rural water supply in Laizhou According to the actual situation,the water shortage situation and water shortage rate of each plan are obtained,and the limited water resources are used most effectively to meet the economic and social development and improve the accuracy of the model operation.(3)Construction of multi-objective planning modelIn this paper,a multi-objective planning method is used,with social,economic,environmental,and comprehensive benefits as the objective functions.From the four water withdrawal plans,the multi-objective planning analysis is performed,and the situation of moderate water conservation in the current year is calculated through calculation.Water was saved by another 7%,and new water storage and diversion projects(including Liujia Reservoir,Baiyundong Reservoir,Yinmachi Reservoir,Menggezhuang Reservoir,and Mashan Reservoir)were added.Therefore,the fourth plan is the optimal plan for the optimal allocation of water resources in Laizhou.