超大断面扁平结构隧道施工参数优化研究
刘宽,莫冠旺,李响,沈平欢,万波,刘建坤

Optimization of the Construction Parameters of Super-large Section Flat Structure Tunnel
Kuan LIU,Guanwang MO,Xiang LI,Pinghuan SHEN,Bo WAN,Jiankun LIU
表3 隧道周边不同围岩部位最大主应力
Table 3 Maximum principal stress of different surrounding rock parts around the tunnel(kPa)
围岩部位30 m台阶长度40 m台阶长度50 m台阶长度60 m台阶长度
左洞右洞左洞右洞左洞右洞左洞右洞
拱顶-17.9-8.1-32.4-8.9-45.5-10.9-66.4-10.5
左侧拱腰-313.4-290.6-313.9-291.3-315.0-291.2-320.5-291.4
右侧拱腰-302.3-288.1-303.7-288.3-304.5-287.9-305.9-288.5
左侧拱脚-408.8-422.9-411.5-427.9-414.3-428.3-416.4-430.0
右侧拱脚-392.3-394.4-395.6-396.1-396.6-396.9-398.3-398.7
拱底中点76.982.875.481.774.881.175.480.4