Method for predicating and analyzing water quantity and quality coupling simulation in oversized river basin

Abstract

The invention belongs to the technical field of a water environment simulation method, and particularly relates to a method for predicating and analyzing the water quantity and quality coupling simulation in an oversized river basin. The method comprises river basin multi-box division, single-box pollution check computation, single-box water quantity and quality coupling mode establishing, multi-box nesting and multi-box water quantity and quality coupling simulation. The method is mainly characterized in that a box body model and a water quantity and quality coupling theory are integrated into an oversized river basin (such as the Three Gorges river basin, the Yangtze river basin, large-scale lakes and water reservoirs) water quality simulation process so as to carry out system simulation and predication on water quantity and quality conditions in the oversized river basin. The method disclosed by the invention has the advantages that the computation is efficient, the operation is convenient, the requirements on data information are less, the complex problems caused by size difference and uncertainty are effectively treated, the technical defect of the water quantity and quality coupling simulation of the oversized river basin is filled, and information such as water pollution situation is provided for river basin management.

Description

technical field [0001] The invention belongs to the technical field of water environment simulation methods, and in particular relates to a super-large-scale river basin water quantity and water quality coupling simulation prediction analysis method. Background technique [0002] The large area of ​​super-scale watersheds, the wide coverage of human activities, the variety of pollution sources, and the interlaced hydrological environment of natural river networks also greatly increase the complexity of pollutant transport and transformation in the watershed. Most of the existing water quantity and water quality simulation technologies for watersheds are suitable for small-scale watershed and small river simulations. Some large-scale simulation technologies require large data and terrain data, and the model calibration and verification are difficult, the calculation is cumbersome, and the degree of popularization and application is not high. It is urgent to develop a set of h...

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Problems solved by technology

[0002] The large area of ​​super-large-scale watersheds, the wide coverage of human activities, the variety of pollution sources, and the interlaced hydrological environment of natural river networks also greatly increase the complexity of pollutant transport and transformation in the watershed.

Most of the existing water quantity and water quality simulation technologies for watersheds are suitable for small-scale watershed and small river simulations. Some large-scale simulation technologies have a large demand for data and topographical data, and the model calibration and verification are difficult, the calculation is cumbersome, and the degree of popularization and applicability is not high.

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