Forecast for Displacement of Soil Cutting Slope Based on Grey Theory

Buckling failure of soil cutting slope usually reflects in displacement of soil mass. With the forecast for displacement of cutting slope on section K22+770 ~ K22+965 of Chongqing Tongliang-Hechuan Expressway as an example,this paper introduces forecasting grey model of displacement of soil cutting slope established based on grey theoretical structure and compares the forecast values with the measured data,the result shows high accuracy. On this basis the paper establishes response function of displacement changing with monitoring time,this function has strong adaptability and can be used as empirical formula of forecast for displacement of soil cutting slope.