【摘要】 针对浅埋隧洞不同岩体围岩的自稳能力问题,文章利用有限元分析软件Phase2,以二甲沟水库引水隧洞工程为研究对象,研究无支护情况下浅埋半圆直墙拱型隧洞在粉质黏土、强风化花岗岩和弱风化花岗岩三种不同围岩条件下的自稳能力,求得了三种岩体的围岩应力和变形结果,并依据应力和变形结果分析三种围岩的自稳能力,为类似浅埋隧洞工程岩体开挖支护设计及施工提供参考和借鉴。更多还原

【Abstract】 Aiming at the problem of surrounding rock self-stability of shallow tunnel under the action of different rock mass, this paper uses the finite element analysis software Phase2 to study the self-stabilizing ability of shallow buried semicircle straight wall arch tunnel in silty clay, strongly weathered granite and weakly weathered granite without support, and the results of surrounding rock stress and deformation of three kinds of rock mass are obtained by using the finite element analysis software Phase2. According to the results of stress and deformation, the self-stabilizing ability of three kinds of surrounding rock is analyzed, which provides a reference for the design of rock mass excavation and support in similar projects.更多还原