Study on the Disturbed Zone of High Red Bed Accumulation Slope by Numerical Simulation

Abstract

The high red bed accumulation slope is a particular type in red beds areas that widely spreads in China. The red bed accumulation is of low intensity and poor engineering property, which can easily cause engineering disease. Therefore, the key issue is cutting the stability in slope engineering. Use stress analysis to determine the disturbed zone of the area directly, the project derives disturbed zone slope stability factor and propose the analytical method steps for the theoretical basis of high slope construction stability and the retaining structure design. Use MIDAS/GTS finite element analysis software to simulate two typical red bed accumulation slopes of Guangyuan-Bazhong expressway. The result reveals that the method is feasible and effective through main stress analysis by a reasonable simulate model. For the typical characteristics of high red bed accumulation slope cutting instability, the project provides the reference of design.