Method for determining dynamic stability coefficient of creep-type side slope

Abstract

The invention relates to a quantitative evaluation method for dynamic stability of a creep-type side slope, in particular to a method for determining a dynamic stability coefficient of the creep-type side slope. The method includes the following steps: (1), measuring related parameters of the side slope and determining an initial stability coefficient F0; (2), arranging side slope displacement monitoring points and acquiring displacement monitoring data; (3), determining side slope creep rupture instability time and a stability coefficient Ft in a constant-speed creep stage; (4), determining an initial point tc and a stability coefficient Ftc in a side slope accelerated creep stage; (5), determining the dynamic stability coefficient in an accelerated deformation stage of the creep-type side slope; (6), determining a criterion for early warning of instability of the creep-type side slope. By the method, instability time of the creep-type side slope and landslide safety coefficients of the side slope at any time can be determined clearly, the limitation of incapability of analyzing and evaluating the dynamic stability of the side slop in real time according to conventional balance methods is overcome, and efficiency of dynamic stability evaluation and monitoring and early warning of the complex creep-type side slope can be greatly improved.

Description

technical field [0001] The invention relates to a slope prevention technology, in particular to a method for quantitatively evaluating the dynamic stability of a creeping slope. Background technique [0002] Landslide is an extremely important content in the current field of natural disaster research. From the perspective of geological disasters, landslides are common, widely distributed and extremely harmful geological disasters, which often bring great harm to national economic construction and people's lives and properties. to a huge loss. According to the characteristics of slope deformation and instability, landslides can be divided into sudden-type landslides and gradual creep-type landslides, among which the gradual creep-type landslides account for a large proportion of slope instability, loose soil slopes, accumulation layer slopes , weathered rock slopes, and all kinds of soft rock slopes are gradual creeping landslides. Therefore, how to scientifically and effect...

AI Technical Summary

Problems solved by technology

However, Saito Dixiao's method did not solve the relationship between its basic parameters and the slope dynamic change and the evolution law, which determines that the prediction model can only explain the deformation and displacement process and law of the landslide, but cannot explain the deformation of the landslide. and the formation mechanism and mechanical dynamics of the instability, and it is impossible to determine the stability coefficient of the slope

Therefore, the Saito method can only predict the instability time of the slope, but cannot give the clear criterion and stability degree of the slope instability, and it is impossible to predict the stability of the slope project based on the displacement monitoring parameters of this method. Quantitative evaluation and prevention

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