摘要
为降低TBM在不良地质条件下施工的卡机风险,解决卡机后快速脱困问题,结合高黎贡山隧道TBM施工情况,针对岩性接触带、断层破碎带、全风化花岗岩粉细砂地层、涌水、高压富水软弱破碎蚀变构造带等不良地质条件,从地质预报、掘进参数控制、初期支护、防卡机措施、卡机脱困技术、不良地质超前加固及改良等关键技术方面进行研究分析,总结出掘进参数与卡机的关系并提出控制措施,同时还针对不同规模的不良地质,总结出刀盘清理法、循环管棚法、导洞法、迂回导坑法等应对措施。
In this study,to reduce the risk of TBM jamming under unfavorable geologies and perform a fast jamming release,an evaluation of key technologies is performed,including geological forecast,tunneling parameters control,primary support,anti-jamming measures,jamming release,advance reinforcement,and ground conditioning of unfavorable geologies(such as lithologic contact zone,fault fracture zone,fully-weathered granite and silty-fine sand formation,water gushing,and high-pressure water-rich weak broken altered structural belt).Moreover,the relationship between the tunneling parameters and TBM jamming is obtained,and control measures are presented.Meanwhile,certain countermeasures corresponding to different scales of unfavorable geologies,i.e.cutterhead cleaning,cyclic pipe roof,pilot tunnel,and bypass heading methods,are summarized.
作者
王亚锋
WANG Yafeng(China Railway Tunnel Stock Co.,Ltd.,Zhengzhou 450001,Henan,China)
出处
《隧道建设（中英文）》
CSCD
北大核心
2021年第3期441-448,共8页
Tunnel Construction
基金
中铁隧道局集团科技创新计划(隧研合2018-03,隧研合2018-31,隧研合2019-24)。
关键词
铁路隧道
TBM
不良地质
卡机脱困
管棚
导洞法
迂回导坑
railway tunnel
TBM
unfavorable geology
jamming release
pipe roof
pilot tunnel method
bypass heading
