摘要
隧道穿越富水断层破碎带时易发生涌水突泥、初支变形过大、开裂等工程事故,隧道施工难度大、风险高,严重影响了施工进度。以高黎贡山隧道为工程背景,通过现场监测研究了隧道拱顶变形破坏特征,主要表现为拱顶沉降和非对称变形。围岩破碎、强度低及丰富的地下水是隧道通过断层破碎带施工过程中隧道发生大范围破坏、涌水和塌方的主要原因。采用了塌方体处理、注浆加固及施工方法调整等方面一系列综合处理措施,围岩变形得到有效控制,处治措施有效。
Tunneling through water-rich fault fracture zones is prone to engineering incidents such as water and mud inflow,excessive deformation of the initial support,and cracking,making tunnel construction difficult and high-risk,which seriously affects construction progress.Using the Gaoligong Mountain Tunnel as a case study,this paper investigates the deformation and damage characteristics of the tunnel vault through on-site monitoring,primarily manifested as vault settlement and asymmetric deformation.The fractured surrounding rock,low strength,and abundant groundwater are the main causes of extensive damage,water surges,and collapses during tunnel construction through fault fracture zones.A series of comprehensive treatment measures were implemented,including treatment of collapse bodies,grouting reinforcement,and adjustments to construction methods.These measures effectively controlled surrounding rock deformation,demonstrating the effectiveness of the treatment strategies.
作者
李慧
LI Hui(China Railway 18th Bureau Group First Engineering Co.,Ltd.,Zhuozhou 072750,China)
出处
《国防交通工程与技术》
2025年第1期70-74,共5页
Traffic Engineering and Technology for National Defence
关键词
隧道工程
富水断层
围岩变形
拱顶沉降
注浆加固
支护参数
tunnel engineering
water-rich fault
surrounding rock deformation
vault settlement
grouting reinforcement
support parameters
