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Geological disaster prediction system and method based on porous media fluid-structure interaction model

A fluid-solid coupling model, geological disaster technology, applied in 3D modeling, image data processing, special data processing applications, etc., can solve problems such as low computing efficiency, inability to accurately predict subsidence, and inability to simulate underground soil subsidence, etc. Achieve the effect of random meshing, guaranteed accuracy, and high computing efficiency

Inactive Publication Date: 2013-12-04
HUBEI THINGO TECH DEV
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a geological disaster prediction system and method based on the porous medium fluid-solid coupling model, so as to solve the problem that the existing technology cannot simulate the subsidence of underground soil and thus cannot accurately predict ground subsidence, foundation subsidence, landslides, debris flows, etc. Geological disasters, and the technical problem that the existing technology adopts the finite difference method with low calculation efficiency

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  • Geological disaster prediction system and method based on porous media fluid-structure interaction model
  • Geological disaster prediction system and method based on porous media fluid-structure interaction model
  • Geological disaster prediction system and method based on porous media fluid-structure interaction model

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Embodiment 1

[0075] This example simulates subsidence in the Central Canyon of California.

[0076] In California's Central Canyon, just a few years of excessive groundwater pumping resulted in ground subsidence of about 9 meters and extensive lateral fissures. Deformation in the vertical plane around the simulated bedrock is an idealized water-bearing system, such as image 3 shown. The plane on the right is similar to the edge of an alluvial basin, and the left is similar to the interior part of a basin where the water level has dropped due to pumping of groundwater. The aquifer system consists of an upper compressible aquifer, a middle compressible closed unit and a lower compressible confined aquifer. The model describes the effects of pumping groundwater from a basin filled with sediment and impermeable bedrock or fault blocks.

[0077] Establish boundary conditions for the above generalized water system model:

[0078] Solid boundary conditions: u is the displacement in the y dir...

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Abstract

The invention relates to a geological disaster prediction system and method based on a porous media fluid-structure interaction model. The geological disaster prediction system and method based on the porous media fluid-structure interaction model comprises the following steps that geological parameters of a geological area to be predicted are collected; according to the geological characteristics and geological parameters of the geological area to be predicted, a hydrogeology concept model is built; according to the geological disaster type to be predicted and the geological characteristics of the area to be predicted, a finite element method is adopted to convert the hydrogeology concept model into a corresponding three-dimensional underground water mathematic model, and the displacement of the geological area to be predicted and the simulation result of distribution situation of stress along with space and time are obtained; the simulation result is output in the mode of image and / or data characters, and the simulation result is used for describing flowing of water among gap media and the sedimentation situation of underground soil; the occurrence time, the geological range and the forming mechanism of the geological disaster are predicted, and a solution scheme is given. The geological disaster predication system and method based on the porous media fluid-structure interaction model can predict geological disasters such as land subsidence, foundation settlement, landslide, debris flow, operation speed is high and accuracy is good.

Description

technical field [0001] The invention relates to a geological disaster prediction system and method, in particular to a geological disaster prediction system and method based on a porous medium fluid-solid coupling model. Background technique [0002] In the prior art, numerical simulation of the groundwater system is usually used to predict geological hazards. Chinese scientists have done a lot of work in the field of numerical simulation of groundwater systems. Zhang Mingjiang et al. used the "seepage pipe-flow coupling model", "infiltration lag recharge method" and "parameter iteration method" to improve the simulation of the model and the accuracy of groundwater resource evaluation. Xue Yuqun introduced the basic principle of Ms-FEM (multi-scale finite element method), and applied it to the flow problem in heterogeneous porous media. valid conclusion. However, due to the complexity of actual hydrogeological conditions, there are still some problems in the application o...

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Application Information

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IPC IPC(8): G06F19/00G06T17/30
Inventor 陈晓辉付磊
Owner HUBEI THINGO TECH DEV
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