摘要
在岩溶地区铁路穿越岩溶溶洞和地下暗河的治理是新建隧道工程经常遇到的技术难题。西成铁路客运专线宝成铁路改线连蒙村隧道工程,隧址区为断层破碎带、岩溶较发育,隧道左侧边墙处有暗河,实践中采用对边墙两侧小溶洞进行封堵、边墙两侧及靠近隧道主体结构范围进行注浆加固,并在隧道仰拱下设置1.5 m的圆管涵通道排水、边墙底设置托梁纵跨暗流通道等技术措施,取得了较好的处理效果。
In karst area,the construction technology of new railway passing through karst cave and underground river is a common technical problem.For Lianmeng village tunnel project of Baoji-Chengdu Railway of Xi'an-Chengdu passenger dedicated line,the tunnel site area is a fault fracture zone with relatively developed karst.There is an underground river at the left side wall of the tunnel.During the construction,small karst caves on both sides of the side wall were blocked,grouting reinforcement was carried out on both sides of the side wall and close to the main structure of the tunnel,and a 1.5 m circular pipe culvert channel was set under the inverted arch of the tunnel for drainage.The technical measures such as setting joist longitudinal span under current channel at the bottom of side wall had achieved good treatment effect.
作者
薛琳
XUE Lin(The 2nd Engineering Co.Ltd.of the 19th Bureau Group of China Railway,Liaoyang 111000,China)
出处
《国防交通工程与技术》
2022年第1期63-66,共4页
Traffic Engineering and Technology for National Defence
关键词
隧道施工
溶洞
地下河流
处理方案
tunnel construction
karst cave
underground river
treatment
