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隧道建设(中英文) ›› 2017, Vol. 37 ›› Issue (9): 1146-1152.DOI: 10.3973/j.issn.1672-741X.2017.09.013

• 施工技术 • 上一篇    下一篇

极高地应力软岩隧道贯通段变形控制方案研究——以兰渝铁路木寨岭隧道为例

李沿宗1, 尤显明2, 赵爽1   

  1. (1. 中铁隧道集团有限公司勘测设计研究院, 广东 广州 511458; 2. 中铁隧道局集团有限公司, 广东 广州 511458)
  • 收稿日期:2017-02-10 修回日期:2017-05-25 出版日期:2017-09-20 发布日期:2017-09-28
  • 作者简介:李沿宗(1982 —),男,贵州瓮安人,2010年毕业于中南大学,防灾减灾及防护工程专业,硕士,高级工程师,现从事隧道及地下工程方面的技术研究及管理工作。Email: dakai909@126.com。

Study of Deformation Control Scheme of Breakthrough Section of Soft  Rock Muzhailing Tunnel on LanzhouChongqing Railway  with Extremely High Ground Stress

LI Yanzong1, YOU Xianming2, ZHAO Shuang1   

  1. (1. Survey, Design and Research Institute of China Railway Tunnel Group Co., Ltd., Guangzhou 511458,  Guangdong, China; 2. China Railway Tunnel Group Co., Ltd., Guangzhou 511458, Guangdong, China)
  • Received:2017-02-10 Revised:2017-05-25 Online:2017-09-20 Published:2017-09-28

摘要:

为了解决极高地应力软岩隧道越岭核心贯通段大变形控制难题,以兰渝铁路木寨岭隧道施工为例,通过现场试验和数据分析,得到如下结论: 1)确定了越岭核心贯通段的长度; 2)提出了越岭核心贯通段“4层初期支护结构+径向注浆+长锚杆+长锚索”综合变形控制方案; 3)得到了贯通段多层初期支护结构变形控制效果; 4)说明贯通段施工及变形控制方案可行。

关键词: 高地应力, 软岩隧道, 贯通段, 4层初期支护结构, 径向注浆, 长锚杆, 长锚索, 变形控制

Abstract:

The deformation control of the core breakthrough section of soft rock mountaincrossing tunnel with extremely high ground stress is very difficult. The field test is carried out and the data collected are analyzed by taking Muzhailing Tunnel on LanzhouChongqing Railway for example. Some conclusions are drawn as follows: 1) The length of the core breakthrough section crossing mountain is determined. 2) The comprehensive deformation control scheme of “fourlayer tunnel primary support structure + radial grouting + long anchor bolt + long anchor rope” [JP2]for core breakthrough section crossing mountain is proposed. 3) The deformation control effect of multilayer support structure of the breakthrough section is good. 4) The construction scheme and deformation control scheme for breakthrough section are rational.

Key words: high ground stress, soft rock tunnel, breakthrough section, fourlayer tunnel primary support structure, radial grouting, long anchor bolt, long anchor rope, deformation control

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