软弱破碎岩层浅埋隧道地表注浆加固  

Surface Grouting Reinforcement of Shallow-buried Tunnel in Weak and Broken Rock Stratum

作　　者：肖志云 XIAO Zhiyun(China Railway No.2 Engineering Group Co.,Ltd.,Chengdu 610041,China)

机构地区：[1]中铁二局集团有限公司,成都610041

出　　处：《路基工程》2024年第3期236-240,共5页Subgrade Engineering

摘　　要：以于都1号隧道工程项目为依托,在穿越地层断裂带、周边围岩松散、自稳定性能差、埋深约39~58 m、长度155 m软弱围岩段,研究软弱地层中浅埋隧道地表注浆加固技术措施,对注浆前后岩层进行取芯对比、超前钻探及掌子面地层揭示对比、地下水量对比等,表明地层加固效果良好。Based on the Yudu#1 Tunnel project,the technical measures for surface grouting reinforcement of shallowburied tunnels in weak strata are studied in the soft surrounding rock section with a depth of 39−58 m and a length of 155 m,which passes through the formation fracture zone,with loose surrounding rock,poor self-stability.The coring comparison,advance drilling,revealing comparison of face strata and underground water quantity comparison before and after grouting show that the formation consolidation effect is good.

关 键 词：软弱地层 浅埋地表 工艺试验 注浆加固 岩体完整性 经济性 

分 类 号：U25[交通运输工程—道路与铁道工程]