A Stability Evaluation Method for Sloping Slopes with Stepped Jumping Deformation

Abstract

The invention relates to an evaluation method for the stability of stepped jumping deformation inclined slopes. The method can fit a conversion deformation-time curve reflecting the whole deformationconditions according to an endpoint of a stepped segment of an actually detected deformation-time curve, and can determine corresponding deformation in a corresponding time period during the whole monitoring process according to the curve, and therefore, deformation speed and acceleration calculation formula can be established. The method combines two different aspects which are time and space toperform comprehensive analysis, and thus, organic integration with temporal and spatial evolution rules can be achieved, and the deformation damage conditions which the inclined slopes are in can be synthetically determined from the macroscopic point of view. According to the magnitude and variation trend of deformation acceleration values and the combination of macroscopic deformation of the inclined slopes, the stability of the inclined slopes can be judged and graded forecast and early warning can be performed; and the evaluation method is simple in calculation, clear in concept and accurate in result, and can overcome disadvantages that existing calculation methods are complex and lengthy in calculation and only can research local deformation stages.

Description

technical field [0001] The invention relates to the field of prevention and control of geological disasters, in particular to a method for evaluating the stability of slopes with step-like jumping deformation. Background technique [0002] The early warning and prediction of landslides has always been a research hotspot in the field of geological engineering. Because the slope has strong individual characteristics, its deformation evolution behavior is closely related to the environmental conditions and the geological structure of the slope body. This is why the early warning and prediction of landslides has not yet been obtained. A difficulty that is well resolved. The deformation of ancient landslides in the Three Gorges Reservoir area under the influence of reservoir water level fluctuations and rainfall often presents the characteristics of step-like jump deformation. Slope and landslide early warning and forecast methods, conventional slope stability detection and earl...

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Problems solved by technology

According to the magnitude and change trend of the deformation acceleration value and combined with the macroscopic deformation of the slope, the stability of the slope is judged and the graded forecast and early warning are carried out; a method for evaluating the stability of a slope with stepped jump deformation and a calculation method provided by the present invention Simple, clear in concept and accurate in results, it overcomes the disadvantages of the existing calculation methods which are cumbersome and lengthy or can only study the local deformation stage; The slope stability analysis based on the deformation characteristics of "shape", especially the inclined slope affected by the reservoir water fluctuation and large-scale excavation, has a good application prospect

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