摘要
本文依托具体工程,通过对黄土铁路隧道台阶法开挖下隧道围岩变形进行数值模拟。结果表明:2台阶法、3台阶法影响拱顶沉降和地表沉降最大的因素是上台阶的开挖,2台阶法各关键点位移值均比3台阶法大。
In the paper, based on a specific project, numerical simulation is used to study rock deformation displacement of the excavation in the loess railway tunnel, displacement value of key point of different excavation step are analyzed. Results show that surface subsidence on the steps of excavation is main factor which influence vault subsidence is the biggest factor in the process of two steps method or three steps method. Each key point displacement values in two steps method of are bigger than one in three steps method.
作者
李莲花
LI Lianhua(China Railway Eighteen Bureau Group, Zhuozhou 072507, Chin)
出处
《洛阳理工学院学报（自然科学版）》
2017年第3期44-47,共4页
Journal of Luoyang Institute of Science and Technology：Natural Science Edition
关键词
围岩变形
二台阶法
三台阶法
数值分析
rock displacement
two steps method
three steps method
numerical simulation
