三车道公路隧道洞口段含水粘土状围岩施工  

Construction experience of the portal section of a three-lane highway tunnel in water-contained clayey rock

作　　者：叶跃林[1] 

机构地区：[1]中铁隧道集团有限公司,洛阳471009

出　　处：《现代隧道技术》2005年第3期76-80,共5页Modern Tunnelling Technology

摘　　要：随着我国国民经济的发展,高速公路等级的提高,公路三线大跨隧道越来越普及,在各种地质条件下如何进行公路三线大跨隧道施工值得进一步总结和研究。文章对盐田隧道洞口浅埋、偏压、高地下水位段采用弧形导洞开挖法施工技术和施工要点进行总结,可为类似工程施工提供参考。With the development of national economy and the upgrade of expressway, three-lane large cross-section tunnel is more and more necessary for highway construction. It is worthy of summarizing and studying on the construction of three-lane large cross-section highway tunnels under various geological conditions. This article summarized the techniques and key points of construction of the shallow embedded, unsymmetrical pressured portal section of Yantian tunnel with high ground water level, adopting bench excavation with an arch-shaped top heading. The practice can be taken for reference by similar projects.

关 键 词：软弱地质 大跨隧道 施工方法 

分 类 号：U455.4[建筑科学—桥梁与隧道工程]