Tide-sensitive river network water environment treatment method based on MIKE model

Abstract

The invention provides a tide-sensitive river network water environment treatment method based on an MIKE model, and the method comprises the following steps: step 1, establishing a river network model based on MIKE, and improving the stability and precision of the model through a method of space step length control, terrain recheck and group gate assignment operation through a time sequence; step2, determining a water replenishing and activating scheme; and step 3, determining a water supplementing process and a water supplementing amount. Complex water flow characteristics of a tidal rivernetwork are used; an HD of an MIKE11 model is used; the AD module constructs a one-dimensional hydrodynamic force and water quality model; the model can directly determine the planned flow of the sluice and the pump station and the flow and concentration of a pollution source afflux point; outputting a water level process line of each section of the river and a process line of pollutant concentration; decision bases are provided for implementation and arrangement of water replenishing and flowing water and river regulation projects in a river network area, tidal power and existing sluice dispatching and water replenishing are fully utilized, the project operation cost is low, implementation is facilitated, river surges are connected into a whole, the river surge water environment is improved, and meanwhile flood regulation is facilitated.

Description

technical field [0001] The invention relates to a water environment treatment method, in particular to a tidal river network water environment treatment method based on the MIKE model. Background technique [0002] In order to further promote water pollution control and improve water environment quality, it is necessary to take engineering and non-engineering measures to improve the water environment in inland rivers. Many projects are located in tidal river network areas, and the water flow is affected by the tide to form a two-way reciprocating flow. The criss-crossing, extremely complex water regime, and numerous hydraulic structures have greatly increased the difficulty of hydrodynamic simulation. Therefore, the mathematical model used must be able to simulate the complex hydrodynamic conditions of the river and perform water quality calculations. At present, models such as WASP, QUAL2K, and EFDC are widely used, and are mainly used in the fields of water volume simulati...

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Problems solved by technology

At present, models such as WASP, QUAL2K, and EFDC are widely used, and are mainly used in the fields of water volume simulation and pollutant simulation and prediction. The models are all used to simulate river flow, water level, and sediment transport, and there is no module for water quality simulation. It is impossible to scientifically analyze and evaluate the amount of water supplemented by using tidal power and pump gate dispatching and the improvement effect of water environment quality after replenishing running water

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