ISSN 2096-4498 CN 44-1745/U
隧道建设(中英文) ›› 2010, Vol. 30 ›› Issue (2): 186-189.DOI: B
• 施工技术 • 上一篇 下一篇
解方亮
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作者简介:
XIE Fang-Liang
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摘要:
在兰渝铁路南坪隧道出口段施工中遇到浅埋偏压现象,围岩为软流塑状Ⅵ级围岩。采用地表管桩控制软流塑状围岩的溜塌;采用大拱脚及加强支护措施来控制变形坍塌;在暗挖施工中经过施工方案比选,采用三台阶预留核心土法;并在严密配套的洞内外监测技术的指导下,安全顺利的通过了浅埋偏压Ⅵ级围岩地段。
关键词: 软流塑状围岩, 浅埋隧道, 管桩, 加固技术
Abstract:
The exit portal section of Nanping tunnel on LanzhouChongqing railway is located in Grade VI plasticflow ground with unsymmetrical pressure. Pipe plies are installed from the ground surface to control the collapse of the plasticflow ground; enlarged arch feet and strengthened reinforcement are adopted to control deformation and collapse; 3bench excavation method with core soil is adopted on basis of construction scheme analysis and strict monitoring is performed inside and outside the tunnel. In the end, the tunnel driving successfully passes the shallowburied Grade VI ground with unsymmetrical pressure.
Key words: plastic flow strata, tunnel under shallow cover, pipe pile, consolidation technology
中图分类号:
U 455.4
解方亮. 软流塑状Ⅵ级围岩浅埋隧道施工技术[J]. 隧道建设, 2010, 30(2): 186-189.
XIE Fang-Liang. Construction Technology for Shallowburied Tunnels in Grade VI Plasticflow Ground[J]. Tunnel Construction, 2010, 30(2): 186-189.
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