Study On The Dynamic Simulation Model Of Water Resources Allocation Of Luhe Hilly Areas

With the rapid economy progress of hilly areas in our country, water shortage has become one of the main factors that restrain regional economy development. In order to appease the water resources supply-and-demand conflict of hilly area and to assure the sustainable development, it has vital theoretic and practical significance to strengthen water resource allocation theory and its application study. In company with the example of water resource comprehensive programming of Luhe District in Nanjing city, the paper carries through analytical study on water resource allocation of its hilly area making use of dynamic simulation model.Based on the practical situation of water resource in Luhe hilly area and the characteristics of banking, leading and lifting"melons-vines"mode waterworks; through water resource investigation evaluation and utilization actuality investigation evaluation; combining with the water system characteristics and water supply mode, the study area is separated into two water resource subareas. Through proper abstraction and polymerization generalization, the water resources allocation dynamic simulation model is set up, which includes the following 3 parts. Each small reservoir is divided up into pieces and assigned responsibility; 4 seat mid-type reservoirs run in conjunction with small type reservoirs; diaphysis river network is regarded as a virtual "reservoir",joint operated with mid-type reservoirs by making use of the existing water replenishing way. Based on life, industry, agriculture and ecological environment water requirement prediction on the conditions of different typical year and different incoming flow frequency of each subarea, the state of water supply and demand balance of each subarea is obtained by duration by duration dynamic simulation and water balance analysis. According to different incoming flow frequency, different scope of project and different crops layout, various water resources supply and demand schemes are ascertained. Then the dynamic simulation model is used to ascertain sound scope of project, planting layout and allocation of water resource in each subarea, and check the pumping power of Hongshanyao pumping station, which provides a good reference to water programming in hilly area. The application shows that the adoptive dynamic simulation model is feasible and effective, and the expectant objective is obtained, which offers an excellent reference to water resource allocation in hilly area.