基于分歧理论的岩体局部化现象研究

Study on the Localization Phenomena in Rock Mass with Bifurcation Theory

本文推导了分歧理论的通用表达式,在其基础上结合有限差分理论推导出FLAC3D计算中岩土体内发生分歧的判定条件,之后在自带的FISH编译语言的辅助下在FLAC3D中研究岩体局部化现象及其发展过程。研究结果非常理想:模型系统逐渐趋于稳定(不平衡力比率在降低)过程中,局部化现象的规模逐渐扩大至稳定,清晰度逐渐增加,证实分歧理论能够有效地分析研究岩体局部化现象。

The unified equation of bifurcation theory is introduced,which is the condition for bifurcation,then the special necessary condition for bifurcation with FLAC3Dis derived. And after compiling the condition with FISH, the intrinsic language in FLAC3Dfor compiling,the localization phenomena and the development are studied. The results of the study are very great. It shows that the localization phenomena and the lower of unbalanced force are more clear,which proves that bifurcation theory can be effectively used to study discontinuous phenomena in rock mass.