Research on the Adaptation of Strength Reduction Method Using FLAC

摘要

The strength reduction method is the common method to solve the stability of slopes when using the numerical simulation technique. It is confirmed that this method can be used to solve the homogeneous soil and rock slopes. Also, some scholars have done researches on the adaptation of this method to solve stability of slopes which are subject to steady seepage, however the calculation examples are very special that is to say the downstream water level is lower than the bottom of slopes. Therefore this kind of research loses universality. In addition, some scholars hold that this method can not be adopted to deal with the stability analysis when slopes concern inhomogeneous soil layers. In order to analyze the adaptation of strength reduction method, using FLAC (Fast Lagrang in Analysis of Continua), we can research on the adaptation of strength reduction method subjected to steady seepage, and the adaptation of strength reduction method subjected to inhomogeneous soil slopes as well. We analyze the results which are elicited by different methods and contrast the limit equilibrium method and the strength reduction method. We conclude that the strength reduction method can be adapted to solve slope stability considering different conditions mentioned above.