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6 隧道周边不同围岩部位最大主应力
Table 6 Maximum principal stress of different surrounding rock parts around the tunnel(kPa)
围岩部位1.0 m锚杆纵距1.5 m锚杆纵距2.0 m锚杆纵距
左洞右洞左洞右洞左洞右洞
拱顶-45.5-10.9-44.2-11.7-55.6-13.4
左侧拱腰-315.0-291.2-315.2-290.7-315.5-290.9
右侧拱腰-304.5-287.9-302.3-287.8-302.8-287.9
左侧拱脚-414.3-428.3-413.0-428.6-413.2-428.6
右侧拱脚-396.6-396.9-396.4-397.3-396.9-397.1
拱底中点74.881.174.780.974.881.0