伊利石软岩铁路隧道开挖的有限元分析

摘要

According to the excavation features of Illite soft rock single-line railway tunnel,the paper adopts the elastic-plastic,non-linear and large deformation dynamic models and the common Drucker-Prager principle of geotechnical project,undertakes the numeric analysis by adopting ANSYS software,concludes the dynamic features and the sliding features of Illite soft rock from its displacement and stress,and the side wall support should be enhanced.%针对伊利石软岩中单线铁路隧道的开挖特点，采用弹塑性、非线性和大变形的力学模型及岩土工程中常用的 Drucker-Prager 准则，运用 ANSYS 软件进行数值分析，并从伊利石软岩的位移、应力角度出发，得出伊利石软岩的力学特性、滑动特性以及要加强对边墙部位支护的结论。