Study On Multi-stage Gate Dam Scheduling Considering Ecological Demand And Engineering Safety

The project of ecological restoration and water storage in the core area of Fenhe River basin controlled by multi-level gate dam is a model of ecological management along the river in the northern region.Considering the ecological regulation,the cascade gate and dam project also needs to prevent sediment deposition and timely water storage in flood season.The regulation and control of the cascade gate and dam project has always been a production problem.Based on the analysis of water resources,water ecology and water environment conditions in the core area of Fenhe River,the paper focuses on the requirements of ecological water demand and flood safety in flood season,and carries out ecological regulation and flood control regulation for the gate and dam system Degree study.In view of the 15 sluice dams built in the core area of Fenhe River Basin,it is necessary to prevent the siltation of the river reach and ensure the safety of the project while improving the ecological environment.Through the multi scenario and multi scheme and the development of the dispatching system,the utilization efficiency of water resources and the dispatching control level of the sluice dams are constantly improved.The main research contents are as follows:(1)The research on the ecological operation of multistage gate dam is carried out.Based on the investigation and analysis of water resources and ecological environment problems in the core area of Fenhe River Basin,the complexity of multi-level gate dam dispatching control is fully considered from the definition of gate dam ecological dispatching connotation,dispatching principle and dispatching mode,and the ecological dispatching model of gate control in the core area of Fenhe River is established with the maximum water demand of water storage project and wetland as the objective function;on the basis of meeting the ecological water demand,By solving the model with constraint method,the ecological scheduling scheme under multi scenario is obtained,which provides application guidance for the ecological scheduling and water storage in the gate control core area.(2)The research on safety operation of sluice dam in flood season is carried out.Based on the basic equation of river flood evolution,this paper makes a simplified analysis and research on the flood evolution model,combined the calculation of river flood evolution with the calculation of sluice dam flood regulation.The regulation calculation of typical floods with 5%and 20%frequency is carried out,and the flood discharge process of sluice dam under different floods is obtained,and the safety guarantee of sluice dam in flood regulation and the function of preventing sediment deposition are verified.(3)The development,implementation and application of Fenhe River Basin core area dispatching system.Based on a large number of preliminary work,using java language to develop the scheduling method and model,with the help of component technology and integrated visualization platform,the scheduling management simulation system for the middle and upper reaches of Fenhe River Basin is developed.In the integrated application of the system,the multi scenario scheme is connected to the scheduling theme.According to the scheduling requirements,combined with the actual scheduling work in the gate control area and the gate dam control information,the feasibility of the research system is verified by integrating the gate control scheduling control and related business applications through the visualized generalized topology of the gate dam scheduling system.