Study On The Prediction Of Landslide Movement Based On The Rate And State Friction Law

Slope is a common type of surface geological structure, it caused instability sliding(landslide) is both a public safety concern and the long-term safety of geotechnical engineering basic problems.To solve the problem of the landslide prediction mechanism model introduction, the application to the rate and state law implementation model development method of slope deformation analysis is put forward in the paper. The specific contents can be divided into the following four areas in the paper:(1) According to the sliding surface of the mechanical equations,to get a feasible technical approach of potential sliding surface kinetic feature extraction in single block model.(2) On the basis of forefathers' research,the application of theoretical analysis and numerical calculation,To establish the basic parameters of the rate and state related description method is determined from the domestic and foreign related classic experiments. Main parameters of A and B was determined by experiments,And other related parameters of landslide can be determined in the physical and mechanical properties of analysis.(3) The rainfall, water level, river flow rate changes cases even creep slope medium and quantitative relation of transient response,to realize the quantitative description of driving mechanism;Through the kinetics related description, getting driving mechanism model structure in the form of a function.Using the history even creep cause correlation analysis and observation data correlation analysis.Determining the undetermined parameters in the model,And finally establish a more cause effect under the condition of driving speed quantitative description of the model;(4) Using a given drive mechanism and the model parameters to determine the instability of slope deformation development on the rate and state friction law with three slope instances;Research indicates Mentioned herein proposed modeling method has good prediction effect.To solve the difficult of the mechanism model is introduced when the landslide prediction technology provides a feasible way.