A method and device for generating coupled simulation parameters of river and groundwater

Abstract

The present invention provides a method and an apparatus for generating coupled simulation parameters of river and groundwater. The method for generating coupled simulation parameters of river and groundwater comprises: obtaining a groundwater numerical model based on a groundwater grid unit and a water circulation simulation model based on a sub-basin; carrying out coupling processing on the groundwater numerical model and the water circulation simulation model; obtaining the interaction water amount between the river section units of the sub-basin rivers coupled with each of the groundwater grid units and the underground aquifer of the groundwater grid units after the coupling processing; and according to the interaction water amount, generating coupled simulation parameters of river and groundwater. According to the method and apparatus provided by the present invention, by obtaining the interaction water amount of the groundwater numerical grid units coupled with the river section units of the sub-basin rivers, the accuracy of generated coupled simulation parameters of river and groundwater is further improved.

Description

technical field [0001] The invention relates to the field of coupling simulation of rivers and groundwater, in particular to a method and device for generating coupling simulation parameters of rivers and groundwater. Background technique [0002] Regarding the groundwater numerical simulation technology and its system, the current technologies mainly include the following types. One is pure groundwater numerical simulation technology and system, which only simulates the circulation process of groundwater itself, without considering the information interaction and mutual influence between groundwater circulation and external water circulation conditions. There are many such simulation technologies and systems, representative simulation technologies and related systems include Visual Modflow, FEFLOW, Visual Groundwater and so on. The second is the coupling method of water cycle simulation and groundwater numerical simulation technology in the form of file exchange. First, t...

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Problems solved by technology

The problem is that when the grid unit scale is too large, the water cycle simulation will produce obvious scale effects, which will affect the simulation accuracy. During the application process, the grid unit needs to be controlled within a smaller scale range.

For large watersheds or regions, the scale of grid units will be very large when modeling, resulting in very time-consuming operation, which requires high storage capacity and computing power of the hardware system

Second, although the water cycle simulation system based on grid units has a strong physical mechanism, its general structure is relatively complex, requiring a large number of parameters and data support, which is highly professional and difficult for ordinary users to grasp.

That is, the average groundwater level in each sub-basin and the average water level of the channel in the sub-basin are used to calculate the water volume interaction between the river channel and groundwater. This processing method has acceptable accuracy when the sub-basin area is small. When the sub-basin area is large, Accuracy is difficult to guarantee

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