Study Of Influences Of Reservoir Regulation On Navigation Flow Condition Between Cascade Hydraulic Projects

Comprehensive exploitation and using of rivers are goals which are pursued in modern society . In order to solve navigation problem and take full advantage of hydraulic resources , the stave development is usually carried out on rivers. After the hydraulic project has been constructed,it will be able to benefit reservoir submergence and flow control of downstream. But, navigation flow condition of the reach between cascade hydraulic projects are frequently affected by many factors.For instance, the fluent fluctuating caused by the reservoir regulation has very tremendous influence to water flow in upstream and in downstream. Specially the navigation's water level of the reach between cascade hydraulic projects is double affected by unsteady flow which is produced by hydraulic project's regulation in upstream and in downstream.When fluent condition's change is complex and the amplitude of water level's change is very big, navigation may be seriously influenced. Therefore during stave development process, the influences of the reservoir regulation's unsteady flow in the reach between cascade hydraulic projects on navigation flow condition is studied, corresponding navigation hydraulic targets are proposed . It is very important to safeguard the ships safe navigation and the people's life and property security, At the same time it also provides the technical support for stave development of the mountainous rivers.This text depends on the project of "The Yuan River Shipping Development Engineering research", adopted the research methods of numerical simulation and theoretical analysis.The text are based upon referring the massive literature and investigation of the material. The influences of reservoir regulation on navigation flow condition in downstream are systematical studied in the text.Firstly, The mathematics model adapting to one-dimensional unsteady flow is founded,which based on the Preissmann implicit differential scheme, and has been verified by the field data of the reach from Qing Shui Tang to Da Fu Tan. Obviously this model can be applied to unsteady flow computation of the long-distance channel.Then adpoted the mathematical model above to compute the unsteady flow of reservoir regulation in the beach from Qing Shui Tang to Da Fu Tan, according to result which is calculated, various hydraulic elements target change of the beach from Qing Shui Tang to Da Fu Tan under three kinds of different boundary...