2011年5月下 施工技术 第40卷第341期 CONSTRUCTION TECHNOLOGY 95 厦蓉高速浅埋软弱围岩隧道施工技术 何东 (贵州高速公路开发总公司，贵州贵阳550001) [摘要]针对厦蓉高速肇兴隧道全线较长，处子软弱围岩不良地质条件下，施工难度大等实际情况，针对浅埋软弱 隧道特点，分析其施工方法，包括围岩量测、隧道支护施工、隧道地表水处理、深孔注浆技术、开挖施工、正洞施工 等.从开挖方祛及控制措、支护控制指施及对地面和洞内的监控测量等，总结得出隧道施工防坍塌措施. 【关键词]软弱围岩；隧道：支护；施工技术 [中图分类号]U459.1 [文献标识码]A[文章编号]1002-8498(2011)10-0095-03 Construction Technology of Shallow-depth Tunnels in Weak Surrounding Rock at Xiamen-Chengdu Expressway He Dong (Guithou Expressway Development Company Guiyang Guishou 550001 China) Abstract:Because the length of Zhaoxing tunnel in Xiamen-Chengdu expressway is very long and the tunnel locates at weak surrounding rock the tunnel construction is difficult.Based on the actual situation with the characteristics of shallow-depth tunnel some construction methods are researehed such as surrounding rock measuring method tunnel supporting construction surface water treatment deep holes pouring technology excavation construction main tunnel construction ete.From the research of the excavation method control measures supporting measures and the monitoring of ground and tunnel the construction measures of prevent collapsing are concluded. Key words:weak surrounding rock tunnel;supporting;construction technology 随着我国公路建设日新月异，隧道建设项目日隙发育，局部可能出现软弱夹层，且围岩破碎严重. 益增多.在隧道施工建设中常会遇到浅埋地层松散围岩的自稳时间也较短，拱顶难免出现松弛变形和 软弱，破碎围岩带等不良地质段.由于浅埋地层埋掉块等现象，需要采取支护措施保证施工安全.在 藏较浅，大都是风化破碎的隧道围岩，受力复杂，导软弱围岩隧道施工过程中，可采用的施工方法一般 致圈岩和支护应力分布和变形非常复杂，尤其是在有：喷锚构筑施工法和复合村砌法.喷锚构筑施工 地形起伏较大的丘陵地带，在隧道施工中，面临更为法是借助新奥法原理，把岩土力学原理作为...
厦蓉高速浅埋软弱围岩隧道施工技术.pdf
