| 胭脂畈隧道过冲沟段施工技术 |
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| 引用本文： | 丁建伟,魏星,吴坤.胭脂畈隧道过冲沟段施工技术[J].路基工程,2012,0(1):148-150. |
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| 作者姓名： | 丁建伟 魏星 吴坤 |
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| 作者单位： | 1.中国市政工程西南设计研究总院，成都 610031 |
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| 摘 要： | 胭脂畈隧道右洞Ⅴ级围岩浅埋过河沟段，埋深相对较浅，地表有冲沟，常年流水，围岩风化严重，透水性好，围岩松散，自稳能力差，极易塌方。施工时经过方案比选，采用双排导管预支护+三台阶分部开挖，使隧道工程安全、顺利通过该不良地段。
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| 关 键 词： | 隧道通过冲沟 双排导管预支护 三台阶分部开挖 |
| 收稿时间： | 2019-11-06 |
Technology on Construction of Yanzhifan Tunnel Passing Gulley Section |
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| Authors: | DING Jian-wei WEI Xing WU Kun |
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| Institution: | 1.Southwest Municipal Engineering Design & Research Institute of China,Chengdu 610031,China; 2.CISDI Engineering Co.,Ltd.,Chongqing 400013,China) |
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| Abstract: | The right tube of Yanzhifan Tunnel is shallowly buried under V class surrounding rock passing gulley section,which features shallow depth of burial,surface gulley with running water constantly,seriously weathered rock,good permeability of water,loose surrounding rock,and bad ability of self-stability and is easy to collapse.Through comparision of various schemes,double-row conduit pre-support plus three-bench excavation is adopted during construction so that the tunnel could pass this bad geological section safely and successfully. |
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| Keywords: | tunnel passing gulley double-row conduit pre-support three-bench excavation |
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