摘要
某隧道施工中发现掌子面掘进方向出现贯穿性溶洞,针对其顶部覆盖层为碎石土等不良地质条件,采用管棚超前支护,并在钻孔、跟管、管棚内骨架钢筋安装、注浆等工序中采用技术措施,保证了隧道在不良地质情况下安全施工。
It was found that there is through-type karst cave along the working face drilling direction in a tunnel construction.Considering the gravel and earth on the karst cave and other adverse conditions,in-advance pipe shed support was used and technical measures were adopted for drilling,casing,installation of steel frame in pipe shed and grouting,to guarantee safe construction under adverse geological conditions.
作者
王海波
张宏远
陈春宏
马超
WANG Hai-bo;ZHANG Hong-yuan;CHEN Chun-hong;MA Chao(China Construction Second Engineering Bureau Co.,Ltd.,100010,Beijing,China)
出处
《建筑技术》
2020年第10期1182-1183,共2页
Architecture Technology
关键词
隧道工程
管棚
跟管施工
不良地质
tunnel project
pipe shed
casing construction
adverse geological conditions
