A simulation method of regional water flow based on the coupling of soil unsaturated water and groundwater
A motion simulation and groundwater technology, applied in design optimization/simulation, special data processing applications, etc., can solve the problems of numerical simulation of unfavorable groundwater flow motion, and the inability to directly input satellite remote sensing data, and achieve the effect of ensuring simulation accuracy.
Inactive Publication Date: 2020-06-09
北京市水文总站
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[0004] Since surface hydrological data are mainly obtained through satellite remote sensing, and satellite remote sensing data are stored in the form of grids, for the groundwater model based on the finite element method, when it performs numerical simulation of groundwater flow movement, the satellite remote sensing data in grid form The data cannot be directly input into the groundwater model, which hinders the numerical simulation of groundwater flow movement
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[0062] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0063] refer to figure 1 , the present invention provides a method for simulating regional water flow movement based on the coupling of soil unsaturated water and groundwater, comprising the following steps:
[0064] Step 1, obtaining the remote sensing grid data of the research area; wherein, the remote sensing grid data of the research area refers to the data obtained through satellite remote sensing, and the remote sensing grid data corresponds to M rows and N columns of grids, namely: the research area grid Gridded into M rows and N columns; the side length of each ...
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The invention provides a method for simulating regional water flow movement based on coupling of soil unsaturated water and groundwater, comprising the following steps of for each finite element nodeP in the research area, adopting the following methods to obtain a grid corresponding to each finite element node P in space; calculating the rainfall infiltration of node P of finite element method;establishing a one-dimensional soil unsaturated flow simulation model; calculating the influence area AP of finite element node P; establishing a three-dimensional groundwater flow model to simulate the groundwater flow. The advantages are that (1) the spatial correlation between the remote sensing raster data and the finite element nodes is realized, which ensures the accuracy of the subsequent groundwater flow simulation by the finite element method; (2) the one-dimensional soil unsaturated flow simulation model and the three-dimensional groundwater flow model are coupled to ensure the simulation accuracy of groundwater flow.
Description
technical field [0001] The invention belongs to the technical field of regional water flow movement simulation, and in particular relates to a regional water flow movement simulation method based on the coupling of soil unsaturated water and groundwater. Background technique [0002] Surface hydrological processes such as rainfall, evaporation, and soil infiltration, and groundwater flow movements are an organic whole that interacts and is intrinsically linked under certain topographical, geological, and climatic conditions. Therefore, when numerically simulating groundwater flow movement, it is necessary to use surface hydrological data as input to ensure the accuracy of numerical simulation of groundwater flow movement. [0003] However, in the process of realizing the present invention, the inventors found that the prior art has at least the following problems: [0004] Since surface hydrological data are mainly obtained through satellite remote sensing, and satellite re...
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IPC IPC(8): G06F30/23
CPCG06F30/23
Inventor 孙峰
Owner 北京市水文总站