Hydraulic Calculation And Optimal Operation Of Multi-sluice Flood Control System In Plain River Network Region

Plain region enjoys closely covered river network where the process of flood routing is comparatively complex, while featuring with developed economy and large population, flood damage is inevitable to bring about wondrously serious economic losses and social influence in this region. Flood-control operation is one of important items in flood control practices and activities. Therefor, conducting research on hydraulic calculation and optimal operation of multi-sluice flood control system in plain river network region has very important significance for theories and great value in practice.Based on summarizing the existing study results in related domain, according to hydrological and hydraulic characteristics of plain river network as well as working performance of multi-sluice, a model for integrated flood control about optimal operation of multi-sluice system at several time interval is formulated by using analysis theory and method of system engineering in this paper, which provide a feasible means for research on the problem about optimal operation of multi-sluice flood control system. Major content is as follow-.1. Comprehensively analyzing the current situation of flood-control operation in our country, reviewing the research trend in the respect of plain river network hydraulic calculation and optimal flood control operation systematically, while the necessity of study on optimal operation of multi-sluice flood control system is point out.2. Briefly expounding flooding routing methods and combining hydraulic characteristic of plain looped river network, one-dimensional hydrodynamic model for unsteady flow is established by using hydraulics method, including base equation, conditions for determining on solution, model generalization, the selection of model parameters and methods of acquiring model solution.3. Systematically describing the basic component of flood control system, deeply analyzing the characteristics of problem on the optimal operation of multi-sluice flood control system in plain and its studying approaches, while the primary fundaments and concrete traits of dynamic programming as well as the methods of establishing the model by using dynamic programming are introduced briefly.4. Considering the change of flood in time and space and the traits of multi-sluice operation generally, a model for integrated flood control about optimal operation of multi-sluice system at several time interval is formed, which is solved by using forward recursive method of dynamic programming. Meanwhile, the approaches to obtaining the solution are given.5. Taking Beilun region of Ningbo city as an example, on the basis of carrying on river network hydraulic calculation by applying the model established in this paper for optimal operation of multi-sluice flood control system, the multi-sluice optimization is realized and the optimal operation policy at each time interval is also got. With combination of results, the rationality , feasibility and applicability of model is analyzed.6. The major achievements in this paper are summed up, while pointing out the orientation of further study.