Stability analyzing, forecasting and early warning method based on traction type slope deformation and failure mechanism
A damage mechanism and traction technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve problems that cannot be fully applied to traction slopes, different modes, etc.
Active Publication Date: 2014-07-23
HUBEI UNIV OF TECH
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Problems solved by technology
The stability calculation and prediction and early warning methods of traction slopes are not perfect; in addition, the failure model of traction slopes varies with the composition of the slope.
In addition, when the damage occurs, the displacement values are different everywhere. Compared with the pushing slope, the deformation value of the pushing slope is very small, and it cannot be fully applied to the traction slope, resulting in inaccurate calculation and prediction results.
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[0085] Firstly, the deformation mechanism of the traction slope is analyzed, so that it is determined that the front edge of the slope is the post-failure zone (such as figure 1 middle a 1 '~a 3 ′ section,), critical state surface (such as figure 1 middle a 3 ’ point) and the steady-state region (such as figure 1 middle a 3 '~a 6 'paragraph), it is proposed that the relationship between the height of the traction slope and the deformation presents an "S" curve feature (such as figure 2 Figure b in ), analyze the three situations of possible failure (case I: failure occurs along the weakest sliding surface (such as figure 1 a in 1 '~a 6 ’ paragraph), case II: new shear damage occurs on the slope (such as figure 1 a in 1 '~b 6 ’ paragraph), situation III: the slope body (or the joints or cracks on the slope body) has tensile failure (such as figure 1 a in 3 '~c 3 part). It is pointed out that the shear failure is determined by the whole process curve of shear str...
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The invention provides a stability analyzing, forecasting and early warning method based on a traction type slope deformation and failure mechanism. On the basis of analyzing a traction type sliding slope deformation mechanism, the mechanical characteristics of a slope and a sliding face and the evolution characteristics of different points of the sliding face, several failure modes of a traction type slope, a stability coefficient computing method based on deformation and a method for determining slope surface displacement are provided, and therefore forecasting and early warning are carried out. The stability analyzing, forecasting and early warning method has the advantages that an imbalance tensile force method based on the traditional stability analysis is provided, and deformation values of different points on the sliding face, a slope body and a slope surface when a slope failure occurs and stability coefficients under different deformation states can be determined. The description of the processes that the slope gradually fails and deforms and force evolves can be carried out, and safety evaluation can be conducted on protection measures of the slope according to the relation of deformation and time.
Description
technical field [0001] The invention relates to the technical field of slope stability analysis and prediction and early warning, in particular to a method for stability analysis, prediction and early warning based on the mechanism of traction slope deformation and failure. Background technique [0002] The stability calculation, prediction and early warning of traction slopes have always been based on the empirical stability calculation and prediction and early warning methods of push slopes. Up to now, the two have not been distinguished. The stability calculation and prediction and early warning methods of traction slopes are not perfect; in addition, the failure model of traction slopes varies with the composition of the slope. Moreover, the displacement values are different at different places during failure. Compared with the pushing slope, the deformation value of the pushing slope is very small at the time of failure, and it cannot be fully applied to the traction ...
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Inventor 卢应发刘德富石峻峰
Owner HUBEI UNIV OF TECH