Water and soil coupling landslide simulation method based on high-order double-set double-phase material point method

A kind of material point and high-level technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problem of low accuracy of pore water pressure and effective stress, large numerical error, and inability to effectively characterize rainfall-type landslide water-soil coupling effects

Active Publication Date: 2019-07-12
JIANGXI UNIV OF SCI & TECH
View PDF19 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional material point method only uses a set of material point divisions, which cannot effectively characterize the water-soil coupling effect of rainfall-type landslides; at the same time, because the traditional material point method uses a linear interpolation sha

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Water and soil coupling landslide simulation method based on high-order double-set double-phase material point method
  • Water and soil coupling landslide simulation method based on high-order double-set double-phase material point method
  • Water and soil coupling landslide simulation method based on high-order double-set double-phase material point method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] A simulation method for water-soil coupled landslides based on the high-order dual-phase material point method, including the following steps:

[0045] Step 1. Determine the calculation parameters through on-site survey, including soil survey to determine the geometric configuration, soil distribution and hydrogeological conditions of the slope; establish a numerical calculation model;

[0046] Step 2: Based on the two-set Lagrangian material point method, the soil skeleton and the pore fluid are separated separately. The solid material point and the liquid material point overlap each other at the initial moment, but remain geometrically independent, allowing relative movement. Lagrangian material points carry all material information and follow the movement of the soil to avoid grid distortion; at the same time, a set of regular Euler-type background grids are arranged to solve the control equations;

[0047] Step 3: Under the framework of continuum mechanics, based on Darcy'...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a water and soil coupling landslide simulation method based on a high-order double-set double-phase material point method, and the method comprises the steps: employing two setsof material point division to disperse solid soil particles and pore fluid, and employing a regular background grid to realize the solving of a control equation; under a continuous medium mechanicalframework, establishing a solid-liquid two-phase substance point method control equation for dividing two sets of substances; realizing interaction between solid-liquid biphase material points and background grid nodes through a high-order B spline primary function; and based on the basic function of the B spline, updating the acceleration, speed, position and other information of the solid-liquidtwo-phase material point, mapping the calculated node information to the material point, updating the material information of the latest solid-liquid two-phase material point, and finally outputtingsimulation information. The method can accurately simulate the large deformation damage process and the water-soil coupling mechanism of the water-soil coupling soil landslide, and provides data support for disaster assessment and prevention of the water-soil coupling soil landslide problem.

Description

Technical field [0001] The invention relates to geological disaster simulation technology, in particular to a simulation method of a water-soil coupled landslide. Background technique [0002] Landslides are a kind of extremely destructive sudden geological disasters, and they are one of the three major sources of geological disasters. Soil landslides account for more than 60% of landslides of various scales, and they mostly occur in the rainy season. Soil landslides caused by rainfall Widely distributed and large in scale, it has brought huge disaster losses to civil engineering, water conservancy, transportation and mining projects. [0003] At present, the limit equilibrium method or strength reduction method is generally used to study the stability of soil slopes, that is, to analyze the safety factor of the slope and the initial instability slip surface. However, the formation and development of soil landslides is a complicated dynamic process, and its failure mechanism invol...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 孙政周晓敏郭钟群金解放
Owner JIANGXI UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap