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Modeling and numeric value simulating method of groundwater environment

A numerical simulation and groundwater technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as complex model building procedures, difficulty in adapting to rapid modeling, and difficulty in applying emergency numerical simulation for sudden pollution accidents

Inactive Publication Date: 2010-12-08
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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Problems solved by technology

These softwares have their own advantages and disadvantages, but they are either limited to the simulation of pollutant migration in a single aquifer in saturated or unsaturated zones; or due to the complexity of the model building procedures, it is difficult to adapt to the needs of rapid modeling; or due to the large number of calculation units, The calculation efficiency is low, and it is difficult to apply to the emergency numerical simulation of sudden pollution accidents of groundwater environment, etc. Therefore, it is impossible to conduct comprehensive, efficient and accurate simulation calculations for sudden pollution accidents of groundwater environment

Method used

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  • Modeling and numeric value simulating method of groundwater environment
  • Modeling and numeric value simulating method of groundwater environment
  • Modeling and numeric value simulating method of groundwater environment

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[0144] 1. Water flow simulation

[0145] Assuming that a pollution event occurs in any place, the pre-processing module can be used to quickly obtain the model study area boundary, set the model mesh accuracy, soil properties, etc., as shown in Table 3, the soil properties are Soilpro files. According to the data of the 5 groundwater level observation wells provided by the study area, as shown in Table 4, the groundwater level and surface elevation, namely the Wellpro file, can be interpolated to obtain the surface elevation of the area, such as image 3 Shown. Interpolation result of groundwater level, such as Figure 4 As shown; the result of groundwater depth interpolation, such as Figure 5 Shown. Figure 3~5 The figure (a) is the difference result figure using the Kringing method, and the figure (b) shows the difference result figure using the quintic spline smooth difference method.

[0146] Table 3 Soilpro files

[0147]

[0148] Table 4 Wellpro's files

[0149] 0

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Abstract

The invention relates to a modeling and numeric value simulating method of ground water environment, comprising the following steps of: (1) carrying out space grid interpolation on surface elevation and embedded depth of groundwater by using space interpolation functions KRIG2D() or TRI<->SURF() functions of IDL (Interface Definition Language) software, and simultaneously dividing a space definite difference molecule value simulation grid to acquire two same differential grid matrixes; setting a simulation region soil property file and a surface elevation and groundwater water level property file; and calculating the embedded depth h0 and unit boundary velocity field of the groundwater; (2) establishing a one-dimension solute transport model in an unsaturated zone; (3) establishing a solute transport two-dimension numeric value model in a saturated zone; (4) carrying out approximate representation on each term in the formula; and (5) solving each component by using IDL matrix algorithm. The invention effectively, quickly and conveniently simulate the groundwater environment based on the IDL platform, thereby the invention is widely used for processes of numeric value simulation, prediction, emergency prediction and the like of the burst pollution event of the groundwater environment.

Description

Technical field [0001] The invention relates to a numerical simulation method, in particular to a groundwater environment modeling and numerical simulation method. Background technique [0002] Sudden pollution accidents in the groundwater environment need to quickly grasp the migration and transformation laws of pollutants in the groundwater environment, determine the scope of pollutants diffusion, and quickly implement targeted treatment and prevention. Therefore, the groundwater environment numerical model is required to have fast and efficient modeling and calculation capabilities. [0003] At present, the numerical simulation methods of groundwater environment mainly include Euler method, Lagrangian method, mixed Euler-Lagrangian method and so on. Based on these methods, MT3D, HST3D, WORM, SWIFT, USGS2D-MOC and other groundwater environment numerical simulation software have been constructed. Each of these softwares has its own advantages and disadvantages, but they are eith...

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Application Information

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IPC IPC(8): G06F19/00
Inventor 吴文强陈求稳黄国鲜马金锋李伟峰
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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