朱家岩隧道出口段长管棚预加固设计及施工  

The Design and Construction of Long Pipe & Shed Pre-reinforced Supporting at Zhujiayan Tunnel Exit Section

作　　者：罗昌宏[1] 龚诗淇[1] 李国圣 赵家栋 刘贞银 

机构地区：[1]湖北沪蓉西高速公路指挥部,湖北恩施445000 [2]湖北省路桥有限责任公司,湖北武汉430056

出　　处：《华东交通大学学报》2008年第1期28-31,共4页Journal of East China Jiaotong University

摘　　要：朱家岩隧道进口段岩土稳定性差、地形坡度大,成洞困难,施工中采用长管棚支护进行预加固处理.对长管棚支护参数、注浆参数、施工工艺进行了介绍.实践证明:应用长管棚超前加固朱家岩隧道进口段是成功的,保证了施工安全、缩短施工工期、保证了工程质量.The poor wall rock stability and steep grade of the exit section of Zhujiayan tunnel make tunneling hard, thus the supporting technology is applied to pre-reinforced measure. The long pipe ＆ shed designing parameters, casting param- eters and construction technic are introduced. It is proved to be successful to apply long pipe ＆ shed pre-reinforced sup- porting technology to treat Zhujiayan tunnel exit section, making the tunnel secure, reducing the construction time and ensuring its quality.

关 键 词：隧道工程 不良地质 长管棚支护 施工工艺 

分 类 号：U455.49[建筑科学—桥梁与隧道工程]