Critical displacement forecasting and early warning method based on slope deformation failure mechanism

A failure mechanism and slope technology, which is applied in the field of critical displacement prediction and early warning based on slope deformation and failure mechanism, can solve the problems of not pointing out the critical displacement and critical deformation rate of slopes

Inactive Publication Date: 2014-04-09
HUBEI UNIV OF TECH
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Problems solved by technology

The critical displacement, critical deformation rate, etc. of the current slope prediction do not point out where the critical displacement and critical deformation rate of the slope are.

Method used

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  • Critical displacement forecasting and early warning method based on slope deformation failure mechanism
  • Critical displacement forecasting and early warning method based on slope deformation failure mechanism
  • Critical displacement forecasting and early warning method based on slope deformation failure mechanism

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings.

[0031] On the deformation mechanism of pushing slope stabilization. The sliding slope often cracks and fails first at the trailing edge. With the passage of time, the erosion of rainwater and the evolution of rock-soil strength, the cracking surface gradually moves from top to bottom. When a certain accumulation of deformation is reached, the central uplift , swelling and other phenomena, within a certain period of time, the front edge of the slope is damaged, accompanied by the overall failure. During the entire evolution process, only one point (or a curve) of the slope is in the peak stress state (that is, the critical stress state) in the two-dimensional plane (or three-dimensional curved surface), and the rest are in the residual stress state or peak stress state. State before stress. For the evolution process of progressive failure of the slope, see figure 1 ....

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Abstract

The invention provides a critical displacement forecasting and early warning method based on a slope deformation failure mechanism. On the basis of the deformation relationship between the push type slope stable deformation mechanism, critical block division and rock and earth mass mechanical properties and a sliding surface and on the basis of analysis of evolutionary characteristics of different points of the sliding surface, a sliding surface displacement deciding method based on calculation of a displacement current situation stability coefficient and based on side slope surface displacement is put forward, and therefore forecasting and early warning are achieved. The critical displacement forecasting and early warning method has the advantages that deformation values of different points on the sliding surface, the slope and the slope surface can be determined when the slope is damaged; process description of slope gradual failure deformation and force can be achieved; through combination with a current slope monitoring value, stability of the slope under different deformation conditions can be analyzed, and the stability coefficient of the slope can be calculated; through combination with the deformation history, durability evaluation can be implemented for the slope protection measures.

Description

technical field [0001] The invention relates to the technical field of slope prediction and early warning, in particular to a critical displacement prediction and early warning method based on the slope deformation and failure mechanism. Background technique [0002] Slope prediction and early warning is a scientific problem that has not been well resolved so far, and the method for determining the critical displacement of deformation failure is not perfect; in addition, when the slope is damaged, the displacement values ​​are different everywhere. For different slopes, the deformation mechanism is also different. The critical displacement and critical deformation rate of the current slope prediction do not point out where the critical displacement and critical deformation rate of the slope are. Contents of the invention [0003] The purpose of the present invention is to provide a critical displacement prediction and early warning method based on the deformation and fail...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B21/02G01B21/32
CPCG01V1/008
Inventor 卢应发石峻峰刘德富
Owner HUBEI UNIV OF TECH
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