Evaluation method for the stability of curved toppling rock mass slopes with a large degree of curvature

A technology of bending degree and stability, which is applied in the field of evaluation of the stability of the slope of a curved and dumped rock mass.

Active Publication Date: 2022-04-12
ZHEJIANG UNIV
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Problems solved by technology

However, it cannot accurately analyze toppled slopes with large degrees of curvature due to the assumption of linear rock formations

Method used

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  • Evaluation method for the stability of curved toppling rock mass slopes with a large degree of curvature
  • Evaluation method for the stability of curved toppling rock mass slopes with a large degree of curvature
  • Evaluation method for the stability of curved toppling rock mass slopes with a large degree of curvature

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[0049] The present invention will be described in further detail below in conjunction with the accompanying drawings. The following specific implementation steps can enable those skilled in the art to understand the present invention more comprehensively, but do not limit the present invention in any form.

[0050] The method for evaluating the stability of a curved toppling rock mass slope with a large degree of curvature according to the present invention comprises the following steps:

[0051] 1. Obtain rock formation parameters: Obtain the density, elastic modulus, tensile strength, shear strength, friction angle between rock layers, and friction angle between rock layers and the basement of slope rocks through measurements and experiments; figure 1 As shown in , draw a common vertical line of all rock formations and use it as the assumed failure surface of the rock formations. Assuming that the central axis of all rock formations is an arc and the center of the arc is lo...

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Abstract

The invention relates to the field of stability evaluation of rock mass slopes, and aims to provide an evaluation method for the stability of curved toppling rock mass slopes with a large degree of curvature. Including: (1) Obtaining the stratum parameters of layered rock slope; (2) Dividing the free bending area and the coordinated bending area; (3) Testing the stability of the free bending area; (4) Calculating the interaction between rock layers in the coordinated bending area (5) Judging the stability of the rock formation at the foot of the slope and the entire slope. Because the bending degree of the rock formation of the large deformation toppled slope is relatively close to the circular arc shape, the present invention improves the limitation of the cantilever beam method by assuming the rock formation as a circular arc on the basis of the traditional linear cantilever beam method, making it Capable of evaluating toppled slopes with large degrees of curvature. Due to the concise formula and few required rock parameters, the method of the present invention is time-consuming and low-cost; the calculation is objective and does not need to manually set parameters; and it can accurately calculate the stability of a curved toppling slope with a large degree of curvature.

Description

technical field [0001] The invention relates to the field of stability evaluation of rock mass slopes, in particular to an evaluation method for the stability of curved toppling rock mass slopes with a large degree of curvature. Background technique [0002] Bending toppling is a special deformation and instability mode of layered rock slope, which is specifically manifested as a series of superimposed rock layers bending toward the free surface without cracking. Once the curved toppled slope loses stability, it will lead to rock landslides, so it is of great significance to analyze the stability of curved toppled rock mass. [0003] At present, the deformation and instability mechanism of curved toppling slopes are mainly studied by three methods: physical experiment, numerical simulation and cantilever beam method. Through physical experiments on typical overturned slopes, many valuable discoveries have been obtained. For example, the failure surface of a curved toppled s...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/20G01N3/24G01N3/08
CPCG01N3/20G01N3/24G01N3/08G01N2203/0003G01N2203/0017G01N2203/0023G01N2203/0025G01N2203/0067
Inventor 郑俊王炯超吕庆田哲祺黄伟民郭吉超
Owner ZHEJIANG UNIV
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