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。
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.
出处
《交通标准化》
2005年第12期92-95,共4页
Communications Standardization
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)
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
the loose earth layer
tunnel with flat-top ＆ upright wall
undermining and covering with lower solid
analysis of the earth＇s surface settlement
construction
