Research On Related Problems Of Reservoir Flood Control And Utilization Of Flood Resource

The waterpromblems of our country mainly incloud that flood disasters is frequently, the loss is severe, and the conflict of supply and demand of water resource is more outstanding and so on. It is a subject of great practical significance that how to realize the flood control and disaster reduction,and utilization of flood resource by reasonable scheduling of hydraulic engineering.The realization of flood control and disaster reduction and utilization of flood resource involve various aspects, the most importance is scientific and reasonable scheduling of hydraulic engineering,on the base of mastering the basic law of flood generation, the characteristics of flood routing, and the accurate prediction for future flood. This paper focuses on the reservoir dispatching and r flood control and utilization of flood resource, and studies on pattern of back water, change regulation of the flood season and the theory of reservoir flood control.On the background of the Luan River basin group of Panjiakou, Daheiting and Taolinkou reservoir group schedule, this paper develops the pratical application. The mainly aspects as following:(1) According to theproblems in parameter estimation of back water prediction model, the parameter estimation method and evaluation criteria of differential evolution is put forward. Evolution algorithm is used to estimate the parameters of the back water prediction for linear model, nonlinear model and exponential model which are evaluated with the root mean square error, Nash coefficients. Because estimates of the regression parameters are different in different divisions for the same river and sometimes the difference is significant, the dynamic estimation of regression model parameters based on neural network is proposed.(2) By taking the typical examples as research object applied to the differential evolution algorithm, the Muskingum model parameters can be optimized. Compared with the least square method, the pattern search fusion method, it shows that the differential evolution algorithm can obtain the best optimized results.Sensitivity analysis of the parameters shows that, the calculated result in Muskingum parameter optimization of the calculation method of stability.(3) By regarding the10-day torrential rain days,10-day average rainfall,10-day rainfall of maximum1-day and the maximum3-day,10-day rainfall of maximum7-day,10-day rainfall years average flow in the reservoir,10-day average and annual maximum flood peak of the actual3-day largest occurrences index of the watershed of panJiaKou reservoir as research object, the staging method of the reservoir flood season based on the discriminant model of the quantitative change and qualitative change is presented. Through the case study and the result analysis, the results show that flood season staging result is closely related with staging index and the proposed method which has strong theoretical background, clear mathematical concept, convenient calculation, intuitive results, and the detailed staging day determined objectively can overcome the disadvantages of the traditional method and the staging results can reflect the physical meaning of the indexes.(4) In the case of Panjiakou,Daheiting and Taolinkou Reservoir group, on the condition of the existing flood forecast level, Study on the joint flood scheduling in Luan River Basin on the premise of safety engineering and the downstream flood control districtin precondition of ensuring engineering and flood control measure safety, the reservoir flood control scheme is proposed aiming at various levels of flood dispatching mode, theactions of flood control and flood detention is fully developed. Through the use of pre-discharge, super storage scheduling measures,Achieve the aim of flood resourceutilizationin the premise to ensure the safety of flood control.