Mike Model Practical Technical Guidance

Mathematical models play an important role in the fields of water environment assessment, flood control assessment, and sewage outfall demonstration. With the continuous increase of human activities and the increasingly prominent environmental problems, the protection and management of water resources and water environment have become crucial. To better understand and address these challenges, mathematical models become a powerful tool that can provide quantitative analysis, prediction, and decision support.

Mathematical models play an important role in water quality, water quantity and aquatic ecology. By establishing a hydrodynamic model, changes in water level, velocity, and flow can be simulated, and the impact of the project on river flood discharge can be evaluated. By establishing a water quality model, we can simulate the diffusion and transfer of pollutants, evaluate the impact of engineering construction on water quality, and formulate corresponding water quality protection measures. At the same time, using the mathematical model, it is possible to evaluate the impact of the setting of sewage outlets into the river on the water quality of water intakes and third parties, and to demonstrate the rationality of the setting of sewage outlets into the river.

In the field of flood protection evaluation, mathematical models play a key role in flood simulation and risk assessment. The flood model can simulate the formation, propagation and evolution process of flood, predict the changes of water level field and flow velocity field before and after the construction of the project, so as to demonstrate the impact of project construction on the flood discharge capacity of the river, and evaluate the feasibility of the river-related scheme.

During the demonstration process of the sewage outlet, the mathematical model can simulate the transmission and diffusion process of pollutants in the water body, and evaluate the impact of pollutants discharged from the sewage outlet on the water environment. These models can help determine the location, quantity and discharge concentration of sewage outlets, optimize sewage discharge strategies, and provide water environmental management measures. The water quality assessment model can combine monitoring data and water quality indicators to evaluate the impact of the sewage outlet on the water quality of the water body, judge whether the water body meets the relevant water quality standards, and provide suggestions for improvement.

Commonly used mathematical model software, such as HEC-RAS, MIKE series software, EFDC, DELFT3D, FVCOM, SWAT+, SWMM, EFDC, etc. These mathematical model software cover different fields and application ranges, and provide a wealth of functions and algorithms to support water environment assessment, flood control assessment and sewage outfall demonstration. However, it should be noted that the mathematical model is only one of the auxiliary decision-making tools, and its application still needs to be combined with the actual situation, reasonable setting of parameters and input data, and combination with on-site monitoring. In addition, the accuracy and reliability of the model also need to be continuously verified and improved to ensure the scientificity and effectiveness of its application.

The lecturers come from domestic scientific research institutes and key universities. They have rich experience in scientific research and engineering technology. Published more than 30 papers, including 10 SCI/EI indexed papers, and 3 monographs on the verification of (water environment capacity), demonstration of the establishment of sewage outlets into rivers, and flood control impact assessment examples. Presided over more than 20 provincial and ministerial key research projects, and presided over more than 50 related projects. 6 patents have been applied for, and 3 patents have been authorized.

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Learning Content

Topic 1:

Application of one-dimensional hydrodynamic model in river hydrodynamic simulation

Through practical examples, master the one-dimensional constant and non-constant hydrodynamic simulation of simple river MIKE, evaluate the change process of water level under different working conditions, and master the production process of river network files, section files, boundary files, parameter files, and simulation files.

1.1 The overall structure of the MIKE11 model

1.2 Creation of river network files

1.3 Creation of River Section Files

1.4 Preparation of boundary condition files

1.5 Simulation file creation

1.6 Calculation result analysis

Topic 2:

One-dimensional complex river network model construction and building setting

Taking the Xijiang river network model of the Pearl River Basin as an example, it describes the process of making and connecting the complex ring river network, and introduces the setting of boundary conditions. Combined with the one-dimensional single channel model, it introduces the setting of weirs, culverts, bridges, and gates:

2.1 Production of complex river network files

2.2 Setting of boundary conditions of complex river network

2.3 Building arrangement and its application in flood control impact assessment

Topic three:

Application of One-Dimensional Water Quality Model in River Sewage Outlets and Environmental Impact Assessment

Still taking the one-dimensional model of the lower reaches of the Jialing River as an example, combined with the estuary gate construction project, the application of the MIKE11 one-dimensional water quality model (AD) and biochemical model (Ecolab) in the environmental impact assessment of construction projects will be explained.

3.1 Demonstration of setting up river sewage outlets