Research On Allocation Of Water Resources In Eastern Urban Of Jinan And Spring Level Simulation

Jinan is the the political, economic and cultural center of Shandong Province with a big population, per capita water resources of which accounts for only one-tenth of the national per capita water resources. Urban population is more dense. Jinan is famous for its springs. However, due to groundwater over-exploitation, the spring has begun drying up since the 1975, which occur almost every year. In additional irrational water structure, inefficient water use, inadequate water resource management mechanisms make the gap between supply and demand of water resources gradually increased. The bottleneck of water resources have become increasingly evident. Therefore it is necessary to do unified manage and scientific allocation of urban water resources to realize effective and equitable distribution between different regions and water users so that sustainable utilization of water resources and socio-economic development can be achieved.Based on the analysis on theory and methods of domestic and international water resources allocation, this article has determined the objectives, tasks, basic principles of urban optimal water resources allocation combining characteristics and requirements of Spring-Jinan through the urban zoning and the regional socio-economic situation analysis. The optimal allocation model of water resources applicable for Jinan City has been set up based on a number of regional water resources supply and demand balance calculation.The model take the extent of the lack of water, the net benefits of regional water supply and the fairness coefficient between industrial water and environmental water as the objective function and the water supply for each user as decision-making variables. The guiding ideology of Objectives achieve method is adopted combining the basic ideas of the eastern urban water resources allocation. A number of water resources allocation programs for eastern district are raised on different precipitation frequency of 2010,2015 and 2020 three level years,according to different possible water supply situation of downtown. Results show that it is better for sustainable socio-economic in the case that the spring water is reused in downtown. Moreover, in order to better achieve the objectives of spring sustainable spewing, this article also used multiple regression model to simulate urban groundwater level change (in units of months). The model fitting results overall is good. Sub-fitting model is recommended to predict groundwater level and for dynamic management of the groundwater exploitation.The research on optimal allocation of water resources of Jinan eastern district and groundwater level fitting and prediction are helpful to achieve the excellent use of excellent water, near use of near water and dynamic control of groundwater level so that limited water resources could bring about maximum socio-economic and environmental benefits,which has important practical significance to sustainable use of water resources and sustainable spring spewing and socio-economic development.