| 双层初期支护技术在软岩大变形隧道施工中的应用 |
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| 引用本文： | 李华伟.双层初期支护技术在软岩大变形隧道施工中的应用[J].铁道建筑技术,2014(2):52-54,69. |
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| 作者姓名： | 李华伟 |
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| 作者单位： | 中铁十四局集团第三工程有限公司,山东兖州272100 |
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| 摘 要： | 初期支护沉降和收敛远远超过预留沉降量,先后采取了增加锁脚锚管、增加大拱脚、调整钢架间距、采用14轻型工字钢替代连接筋连接、增加预留变形量等措施均不能有效地控制隧道的异常变形。最后采取双层初期支护技术,有效地控制了隧道的异常变形。
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| 关 键 词： | 异常变形 双层支护 软岩隧道 |
Application of Double-deck Timbering in Abnormal Deformation of Weak Rock Tunnel |
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| Li Huawei.Application of Double-deck Timbering in Abnormal Deformation of Weak Rock Tunnel[J].Railway Construction Technology,2014(2):52-54,69. |
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| Authors: | Li Huawei |
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| Institution: | Li Huawei (China Railway 14th Bureau Group Co. Ltd. , Yanzhou 272100, China) |
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| Abstract: | The deformation of the initial timbering is unexpected and all the measures such as feet-lock bolt, large arch springing, double T-steel instead of dowel are not effective. Hence, the double-deck timbering is taken which puts the de-formation under effective control. |
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| Keywords: | abnormal deformation double-deck timbering weak rock |
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