| 软弱地层隧道大变形整治技术 |
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| 引用本文： | 王志杰,唐力,徐海岩,李瑞尧,徐君祥. 软弱地层隧道大变形整治技术[J]. 铁道建筑, 2019, 0(4): 79-82 |
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| 作者姓名： | 王志杰 唐力 徐海岩 李瑞尧 徐君祥 |
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| 作者单位： | 西南交通大学交通隧道工程教育部重点实验室 |
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| 基金项目： | 国家自然科学基金(51678498);教育部创新团队发展计划(IRT0955) |
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| 摘 要： | 蒙华(蒙西—华中)铁路阳城隧道一段落位于软弱地层中,其右侧是砂夹块石土,左侧为富水全风化砂岩,施工过程中产生了大变形。本文基于大变形段掌子面围岩的基本物理力学性能试验结果,从隧址区地质条件、围岩工程特性、隧道施工的影响等方面分析了大变形机理,采取反压回填、增设临时仰拱、增加扇形支撑、加密降水和注浆加固措施完成了大变形整治,效果良好。
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| 关 键 词： | 铁路隧道 大变形 试验分析 整治措施 土砂互层 |
Large Deformation Treatment Technology for Tunnels in Weak Strata |
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| WANG Zhijie,TANG Li,XU Haiyan,LI Ruiyao,XU Junxiang. Large Deformation Treatment Technology for Tunnels in Weak Strata[J]. Railway Engineering, 2019, 0(4): 79-82 |
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| Authors: | WANG Zhijie TANG Li XU Haiyan LI Ruiyao XU Junxiang |
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| Affiliation: | (Key Laboratory of Transportation Tunnel Engineering of the Ministry of Education,Southwest Jiaotong University,Chengdu Sichuan 610031,China) |
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| Abstract: | Yangcheng Tunnel section of Menghua ( Mengxi-Huazhong ) Railway is located in weak strata.The right side of the tunnel is sand block rock soil,while the left side is water-rich fully weathered sandstone,which causes large deformation during construction.Based on the test results of the basic physical and mechanical properties of the surrounding rock of tunnel face in the large deformation section,the large deformation mechanism was analyzed from the geological conditions of the tunnel site,the engineering characteristics of the surrounding rock,the inf luence of tunnel construction and so on.The measures such as back pressure backf illing ,setting temporary invert arch,adding fan-shaped support,improving dense precipitation and grouting reinforcement were adopted to complete the large deformation treatment,the effect of which is good. |
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| Keywords: | Railway tunnel Large deformation Experimental analysis Treatment measures Soil sand interbed |
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