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松散土层中浅埋暗挖大跨度平顶直墙隧道施工技术
The Technique for Construction of Tunnel with Great-span Flat-top & Upright Wall to Undermine and Cover with Lower Solid under Urban Pipelines in Loose Earth Layers
【摘要】 松散围岩中超浅埋暗挖平顶直墙隧道施工,采用大管棚和小导管注浆超前预支护措施,且分多步CD法微台阶开挖施工,在围岩多次受扰动等情况下,成功的完成了大跨度超浅埋暗挖隧道,可有效地保证隧道施工及周边建筑物的安全。
【Abstract】 In the construction of tunnel with great span flat-top & upright wall to undermine and cover with lower solid under urban pipelines in loose earth layers,it is feasible and successful to apply the large pipe-shelf technology and small tube grouting-advanced-timbering with multi-CD micro-step excavation technique.In condition of wall rock with multi-signs,which ensures the construction’s process and the safety of buildings.
【关键词】 松散土层;
平顶直墙隧道;
浅埋暗挖;
地表沉降分析;
施工;
【Key words】 the loose earth layer; tunnel with flat-top & upright wall; undermining and covering with lower solid; analysis of the earth’s surface settlement; construction;
【Key words】 the loose earth layer; tunnel with flat-top & upright wall; undermining and covering with lower solid; analysis of the earth’s surface settlement; construction;
【基金】 安徽省级重点教学研究资助项目(2005102);安徽省级教学研究资助项目(2005360);国家教育部公路与桥梁产学合作研究与实践研究项目(2002-282)
- 【文献出处】 交通标准化 ,Communications Standardization , 编辑部邮箱 ,2005年12期
- 【分类号】U455.4
- 【被引频次】3
- 【下载频次】115