Slope monitoring method based on fissure water pressure distribution law of wedge body

A pressure distribution, wedge-shaped technology, applied in the direction of applying stable tension/pressure to test the strength of materials, measuring devices, analyzing materials, etc.

Inactive Publication Date: 2019-02-19
CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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Problems solved by technology

In the stability analysis of the wedge body by Hoek et al. in 1973, the geometric size of the wedge body, the shear strength of the structural surface and the distribution of groundwater were considered, and the safety factor of the wedge body slope could be solved effectively, but the groun

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  • Slope monitoring method based on fissure water pressure distribution law of wedge body
  • Slope monitoring method based on fissure water pressure distribution law of wedge body

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Embodiment Construction

[0124] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0125] A natural slope is selected as the research slope, and the spatial geometry and mechanical characteristics of the slope wedge are determined by stereopolar projection. Find potential sliding wedges in rock mass with multiple discontinuities, and preliminarily identify the sliding type of wedge W, which provides necessary parameters for further weight displacement calculation.

[0126] Such as Figure 1~2 As shown, it is the wedge W of this embodiment, the wedge W is a tetrahedral structure, the apex is C, the bottom point is O, and the end points on both sides are A and B respectively, wherein the wedge W is the structural surface in contact with the natural slope are structural plane a and structural plane b respectively, namely figure 2 COA and COB in, such as figure 1 As shown, the intersection line between structural su...

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Abstract

The invention relates to the technical field of wedge body stability analysis, and particularly a slope monitoring method based on a fissure water pressure distribution law of a wedge body. The methodcomprises the following steps: 1) identifying a potential unstable wedge body W; 2) performing stress analyzing on the unstable wedge body W; 3) performing analyzing on the fissure water pressure distribution law of the wedge body W; 4) solving a safety coefficient of the wedge body under the water pressure distribution condition of the wedge body; 5) solving a maximum shearing displacement of the wedge body W based on weight parameters; 6) deriving a critical safety displacement; and 7) calculating a displacement of a structure plane crossing line L of the slope, comparing the displacement with the critical safety displacement, and taking corresponding measures according to a comparison result. According to the slope monitoring method based on the fissure water pressure distribution lawof the wedge body, the traditional fissure water pressure distribution law is improved according to stress characteristics of the wedge body, the maximum shearing displacements of the wedge body underthe action of different water pressure distribution are solved, and the inaccuracy for solving the displacement of the wedge body in the traditional method is avoided.

Description

technical field [0001] The invention relates to the technical field of wedge stability analysis, in particular to a slope monitoring method based on the distribution law of water pressure in wedge fissures. Background technique [0002] As one of the serious geological disasters in my country, landslides are extremely harmful and destructive, bringing huge economic and property losses to our country, and posing a serious threat to construction projects and people's lives. Among them, rock landslide is a common landslide geological disaster with great harm, especially when the rock mass slope has obvious structural plane, the landslide body is very easy to slide along the structural plane to form a landslide. Therefore, it has very important scientific significance and engineering application value in the field of landslide disaster reduction and prevention to take corresponding prevention and control measures for rock mass slopes in time and reduce or eradicate the risk of r...

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Application Information

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IPC IPC(8): G01N3/12
CPCG01N3/12G01N2203/006
Inventor 冯登张杰詹学启金奖
Owner CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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