摘要
为探究不良地质隧道TBM卡机原因及脱困技术,以西北某供水工程XE隧洞为研究对象,结合现场实际监测、室内试验与数值模拟,系统剖析TBM卡机成因,并构建“多维度监测预警-分级处置-动态优化”的脱困综合技术体系。制定“断层破裂带、蚀变带、岩爆、软岩大变形”等多种不良地质段的卡机风险评估标准,提出一套基于“超前探测+近距离围岩感知”的TBM卡机预测方法。基于不同卡机类型提出“断层破碎带及风化蚀变带以超前加固、注浆堵水为主;软岩大变形以加强支护、平稳掘进为主;岩爆以应力释放、极强支护为主”等预防综合技术。
In order to investigate the causes of TBM jamming and the technology of escape in unfavorable geological tunnels,the XE tunnel of a water supply project in Northwest China was taken as the research object.Combined with field monitoring,indoor tests and numerical simulation,the causes of TBM jamming were systematically analyzed,and the comprehensive technical system of"multi-dimensional monitoring and early warning-graded disposal-dynamic optimization"for escape was constructed.The risk assessment criteria for jamming in various kinds of unfavorable geological sections such as"fault fracture zone,weathering zone,rock burst,soft rock large deformation"were developed,and a set of TBM jamming prediction method based on"advanced detection+close-range surrounding rock sensing"was proposed.Based on different types of jamming,comprehensive prevention technologies were proposed,including:advanced reinforcement and grouting water blocking for"fault fracture zones and weathering erosion zones,strengthening support and smooth excavation for large deformations in soft rocks,and stress release and extremely strong support for rock bursts.
作者
杨保科
YANG Baoke(China Railway 16th Bureau Group 2nd Engineering Co.Ltd.,Tianjin 300162,China)
出处
《铁道建筑技术》
2025年第12期69-73,共5页
Railway Construction Technology
基金
中国铁建股份有限公司科技研发计划项目(2018-C13)。
关键词
不良地质隧道
TBM
卡机成因
断层破裂带
分级处置
脱困技术
unfavorable geological tunnel
TBM
jamming cause
fault fracture zone
graded disposal
escape technology
