A dynamic evaluation method for the stability of structural surface-controlled slopes based on strain softening shear constitutive model and displacement change

Abstract

The invention provides a dynamic evaluation method for the stability of a structural plane-controlled slope based on a strain softening shear constitutive model and displacement changes. The method includes landslide investigation, force analysis, establishment of a calculation model of anti-sliding force, calculation of unloaded loads on the free surface, determination of the shear constitutive equation of the structural plane, construction of the motion equation of the structural plane to control the slope mass, and calculation of the potential sliding mass. Displacement process curve and other steps. Combined with on-site deformation monitoring data, this method can dynamically discriminate the real-time stability state of the control slope of the structural plane. According to the convergence of the calculated displacement of the sliding mass, the long-term stability of the rock slope controlled by the structural plane can be predicted to a certain extent.

Description

technical field [0001] The invention relates to the technical field of geological disaster prediction and prediction, in particular to a method for evaluating the stability of rock slopes based on a displacement development process. Background technique [0002] The current design of slope geological disaster control generally adopts the statics design based on the norms, and its obvious deficiency is that the geological body is regarded as a rigid body, and the deformation and failure mechanism of the geological body and the process of geological disasters are not fully considered. Although the catastrophic evolution process and action mechanism of high rock slopes are very complex, their macroscopic manifestations must be that the slope is deformed. The instability process of rock slope has a time-varying effect, that is, the whole deformation process shows a relatively obvious aging deformation. According to the aging deformation process obtained by its on-site monitorin...

AI Technical Summary

Problems solved by technology

However, in my country, on the one hand, landslide disasters are widely distributed, and problems such as engineering prevention, mechanism research, and prediction and forecasting need to be solved urgently, and almost all work depends on the monitoring data of landslides. The lack of theoretical calculation methods for slope protection slope deformation, a small number of studies focused on engineering numerical methods or empirical estimation based on measured values, the reliability is also low, and there are large differences between them and the actual situation

Images