环保、震区隧道“零开挖”进洞施工技术探讨  

An Exploration into the " Zero Excavation" Technique for the Hole-Entering Construction of a Tunnel in Environmental Protection and Seismic Regions

作　　者：贾海龙[1] 张文新 

机构地区：[1]中铁隧道集团三处有限公司,广东深圳518000 [2]中铁隧道集团技术中心,河南洛阳471009

出　　处：《国防交通工程与技术》2016年第2期71-74,共4页Traffic Engineering and Technology for National Defence

摘　　要：受环境保护因素影响,在环保、震区进行隧道洞口施工是首要难题。成兰铁路某隧道采用"零开挖"进行隧道进洞施工,通过隧道进洞被动防护、超前支护、减震爆破开挖,支护及时封闭成环等措施的应用,有效保证了隧道进洞施工的安全,提高进洞施工效率,有效保护洞口周边的环境,并推广到其它隧道进洞施工中,对后续类似工程条件下隧道进洞施工积累了一定经验。Influenced by the factors of environmental protection,the construction for the portal of a tunnel is the most difficult in environmental protection and seismic regions.The construction of a certain tunnel of the Chengdu-Lanzhou Railway adopts the ＂Zero Excavation＂ Technique to perform the hole-entering construction to ensure the safe hole-entering construction of the tunnel by means of the passive hole-entering protection,the advanced supporting,the shock-reducing blasting excavation,the timely ring-closure-forming and other measures.With all the above-mentioned technical measures taken,the safe construction is effectively ensured and the construction efficiency is also much improved,with the environment around the tunnel well protected.The construction technique is popularized and applied to the hole-entering construction of other tunnels.The successful application of the technique helps us accumulate some useful experience in performing hole-entering construction for other following tunnel projects in similar engineering conditions.

关 键 词：环保震区隧道 零开挖 进洞施工 

分 类 号：U455.4[建筑科学—桥梁与隧道工程]