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Method for analyzing stability of soil slopes and landslide movement procedures on basis of SPH (smoothed particle hydrodynamics) processes

A soil slope and motion process technology, applied in the field of computational mechanics, can solve problems such as the difficulty of landslide process analysis

Active Publication Date: 2018-07-27
SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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Problems solved by technology

[0003] At present, the analysis methods for slope stability mainly include limit equilibrium method, finite element method and finite difference method, etc. These methods have high accuracy in slope stability analysis, but the landslide process after slope instability analysis is difficult

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  • Method for analyzing stability of soil slopes and landslide movement procedures on basis of SPH (smoothed particle hydrodynamics) processes
  • Method for analyzing stability of soil slopes and landslide movement procedures on basis of SPH (smoothed particle hydrodynamics) processes
  • Method for analyzing stability of soil slopes and landslide movement procedures on basis of SPH (smoothed particle hydrodynamics) processes

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Embodiment Construction

[0064] The design idea of ​​the present invention is: the present invention is based on Smooth Particle Hydrodynamics (SPH) and invents a kind of novel method applicable to soil slope stability and landslide analysis, and the technical problems mainly used to solve are:

[0065]1. At present, the commonly used numerical simulation methods can only perform stability analysis, but there are difficulties in analyzing the movement process of landslides;

[0066] 2. In view of the current existing SPH method mainly for post-accident landslide analysis, but there are difficulties in stability analysis and the problem that the slide surface needs to be specified in advance for landslide analysis, a method of stability analysis and slope failure applicable to SPH are proposed. Stable evidence.

[0067] The present invention comprises the steps:

[0068] Step 1: According to the section information of the slope to be studied, generate a particle model, and assign values ​​to the relev...

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Abstract

The invention discloses a method for analyzing the stability of soil slopes and landslide movement procedures on the basis of SPH (smoothed particle hydrodynamics) processes. The method has the advantages that safety coefficients of the slopes and latent slide planes can be computed by the aid of the method, the landslide procedures after slope instability further can be analyzed by the aid of themethod, and indexes of influence ranges, submerged depths, impact force and the like after slope instability landslide further can be acquired; the stability of the slopes prior to instability can beanalyzed by the aid of the method, two instability criteria are proposed, accordingly, the safety coefficients of the slopes and the latent slide planes can be effectively acquired, and instability slide regions can be automatically computed by the aid of the method on the premise that slide planes (or slide ranges) are not specified in advance.

Description

technical field [0001] The invention relates to the field of computational mechanics, in particular to a soil slope stability and landslide movement process analysis method based on the SPH method. Background technique [0002] In recent years, major accidents caused by landslides are not uncommon. For example, the Shenzhen landslide in December 2015 and the Maoxian landslide in Aba Prefecture, Sichuan Province on June 24, 2017 have caused a large number of casualties and property losses. One of the important reasons for the landslide is that Slope instability means insufficient stability, so stability analysis has always been one of the research hotspots in the field of geotechnical engineering. [0003] At present, the analysis methods for slope stability mainly include limit equilibrium method, finite element method and finite difference method, etc. These methods have high accuracy in slope stability analysis, but the landslide process after slope instability Analysis i...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/23G06F2119/06
Inventor 唐宇峰
Owner SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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