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Research of Hydrodynamic and Water Quality Simulation in Three Gorges Reservoir at Non-flood Season

Author: ChenDong
Tutor: LiChuanQi
School: Shandong University
Course: Hydraulic Structure Engineering
Keywords: Three Gorges Reservoir Ecological regulation Numerical Simulation Hydrodynamic Water quality
CLC: TV131.2
Type: Master's thesis
Year: 2008
Downloads: 395
Quote: 3
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Abstract


With the construction of large-scale water conservancy and hydropower project, the human more effective management and full utilization of water resources, has made a huge flood control, power generation, shipping and other benefits. But after the project is completed, inevitably bring about a number of ecological and environmental problems. Ecological factors in the reservoir scheduling during develop over time, as the reservoir operation one of the goals. The same time due to the complexity of the fluid motion, the traditional physical model tests has been difficult to meet the needs of the research study hydrodynamic numerical simulation become convenient and powerful means. After the completion of the Three Gorges Reservoir, the non-flood season, the Three Gorges Reservoir to 175m, power station taken peaking run mode. Due to the improvement of the water level and peaking run, changing the natural river flow pattern, causing the reservoir ecological environment problem. Ability to adjust scheduling non-flood days of improved characteristics and water quality of the reservoir and the main tributaries of the hydrodynamic become the entry point and the focus of this article. Preliminary exploration of how to implement the \In this paper, Danish Hydraulic Institute (DHI) the MIKE11 software R \u0026 D, the Three Gorges Reservoir (up to to Fengjie total length of about 170 km) and five major tributaries of the numerical simulation, the establishment of a hydrodynamic model and water quality model. And calculating and adjusting the model parameters, the model can accurately simulate the segment terrain hydrological conditions. At the same time, by the daily regulation scheduling simulation analysis, the analysis of the reservoir area and the main tributaries of water dynamics and pollutant dispersion by increasing the reservoir daily regulation scheduling of reservoir water dynamics and water quality conditions the improvement is made. Established (to Fengjie) hydrodynamic and water quality model of the Three Gorges Reservoir, and through existing measured data for model validation and calibration, to prove the correctness of the model. Generalizability, section selection, roughness, water quality parameters value such as the establishment of this paragraph hydrodynamic model and water quality model of the river network and established formula. Analysis of non-flood several analog adjust the scheduling scheme of the Three Gorges Reservoir, the daily regulation reservoir and the main tributaries of the hydrodynamic characteristics and changes in water quality analysis, pointed out that the non-hearing by increasing the reservoir daily regulation scheduling the reservoir area and the tributaries of the water environment improvement in the state. Is an effective way to improve the water quality of the reservoir area and tributaries.

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CLC: > Industrial Technology > Hydraulic Engineering > The basic science of water resources project > Hydraulics > Hydraulic theory, calculation, experiment > Hydrodynamic
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