Method for estimating stability of anti-inclined slope

A technology of anti-inclining slope and stability, which is applied in the direction of machine/structural component testing, measuring devices, instruments, etc., and can solve problems such as error-prone and low efficiency

Inactive Publication Date: 2010-10-13
INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

However, this method has some limitations in practical engineering applications. For example, in many cases, the cutting fracture groups that make up the block are often not perpendicular to each other but oblique; at the same time, the thickness of the block is relatively small compared to the height of the slope. , resulting in a large number of blocks contained in the slope, the efficiency is quite low and error-prone when using this method to analyze the toppling stability

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  • Method for estimating stability of anti-inclined slope
  • Method for estimating stability of anti-inclined slope
  • Method for estimating stability of anti-inclined slope

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Embodiment 1

[0061] A method for evaluating the stability of an anti-incline slope, comprising the following steps:

[0062] Step 1: Input slope geometry parameters (S1)

[0063] slope angle (β s =55°) 21. Natural ground inclination (β g =15°) 22. Potential failure plane inclination (θ=42°) 23. Steep structural plane inclination (β j =65°) 24. The inclination angle of the transverse structural plane (β b =25°)25, slope height (H=48m)26, rock block thickness (t=2m)27, slope rock mass weight block (γ=25kN / m) and steep structural surface friction angle and the friction angle of the transverse structural plane and slope safety factor (F s =1.0) (The listed parameter values ​​are slope parameters in Table 1).

[0064] Step 2: Intermediate parameter calculation (S2)

[0065] 2.1. Auxiliary parameter calculation:

[0066] The included angle between the slope surface and the normal line of the steep structural surface: β sr = β s +β j -90°;

[0067] The included angle between the nat...

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Abstract

The invention discloses a method for estimating the stability of an anti-inclined slope, which belongs to the technical field of rock and soil engineering and is characterized by comprising the following steps: on the basis of slope geometric dynamic boundary conditions, determining the potential destruction mode of the anti-inclined slope; establishing a uniform expression formula of slope rock block physical quantities, such as equivalent inclination weight, transfer coefficients and the like, which only depend on slope rock block number, and sequentially establishing an inclination destruction stability analysis model of the anti-inclined slope to enable the slope inclination stability analysis to be formulized and programmed. The method is applicable for the condition of oblique crossing of two groups of structural surfaces and expands the applied range of slope inclination stability analysis; and meanwhile, the method is easy for compiling a stability analysis program on the basis of Excel which is widely familiar to engineering technical personnel, and realizes the rapid programmed analysis of the stability of the anti-inclined slope. The invention is applicable for the stability estimation work of the anti-inclined slope in the fields of mines, water conservancy and hydropower, roads and bridges and the like and has good engineering practical value.

Description

technical field [0001] The present invention relates to the technical field of geotechnical engineering slope geological disaster assessment, and more specifically relates to a method for evaluating the stability of an anti-inclined slope, which mainly uses the geometric boundary conditions of the anti-inclined slope and the structural surface strength parameters to express the mechanical analysis process. The physical quantities involved are used to achieve the goal of rapid and intelligent analysis of slope toppling stability assessment. Background technique [0002] Toppling failure is a typical rock slope instability mode, which exists in various geotechnical engineering such as water conservancy and hydropower, highway and open-pit mining, etc., and has been widely valued by the geotechnical engineering field in recent decades. The geological characteristics of the toppling failure type rock slope are that there is a set of main control fracture groups inserted into the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M19/00G01M99/00
Inventor 刘才华陈从新
Owner INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
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