A method for analyzing soil slope stability and landslide movement process based on sph method

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

Active Publication Date: 2021-08-17
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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  • A method for analyzing soil slope stability and landslide movement process based on sph method
  • A method for analyzing soil slope stability and landslide movement process based on sph method
  • A method for analyzing soil slope stability and landslide movement process based on sph method

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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 an analysis method for soil slope stability and landslide movement process based on the SPH method. The invention can calculate the safety factor and the potential slip surface of the slope, and can also analyze the landslide process after the slope becomes unstable, and obtain the indexes such as the influence range, the submerged depth and the impact force after the slope becomes unstable and landslide. The invention can analyze the stability of the slope before the instability, and proposes two instability criteria to effectively obtain the safety factor and the potential slip surface of the slope, without specifying the slip surface (or slip surface) in advance. Under the premise of the sliding range), the area of ​​instability slip is automatically calculated.

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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/23G06F119/14
CPCG06F30/23G06F2119/06
Inventor 唐宇峰
Owner SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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