| 软岩大跨小间距双洞隧道洞口处理技术 |
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| 引用本文： | 黄新社,曹正喜.软岩大跨小间距双洞隧道洞口处理技术[J].隧道建设,2007,27(3):79-83. |
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| 作者姓名： | 黄新社 曹正喜 |
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| 作者单位： | 1. 中铁隧道集团杭州分公司,杭州,310030
2. 中铁隧道集团科研所,河南,洛阳,471009 |
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| 摘 要： | 沈应线隧道工程位于较为繁华的舟山沈家门城区，长1230m，其南北出入口地质很差，多为全-强风化岩层的黏性土夹砾石，围岩稳定性差，介绍了对该工程的洞口段所进行的小导管、大管棚预支护与注浆加固处理技术。
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| 关 键 词： | 大跨小间距双洞隧道软弱围岩洞口大管棚 |
| 收稿时间： | 2007-05-10 |
| 修稿时间： | 2007-05-10 |
Treatment Technology for Portal Section of Twin-tube Soft Ground Tunnel with Large-span and Small-spacing |
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| HUANG Xin-she,CAO Zheng-xi.Treatment Technology for Portal Section of Twin-tube Soft Ground Tunnel with Large-span and Small-spacing[J].Tunnel Construction,2007,27(3):79-83. |
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| Authors: | HUANG Xin-she CAO Zheng-xi |
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| Institution: | 1. Hangzhou Branch of China Railway Tunnel Group Co. , Ltd. , Hangzhou 310030, China; 2. Scientific Research Institute of China Railway Tunnel Group Co. , Ltd. , Luoyang 471009, Henan, China |
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| Abstract: | Shenyingxian tunnel, which is located in Shenjiamen urban area in Zhoushan city, is 1 230 m long. The north and south portal sections of Shenyingxian tunnel are located in fully-weathered to heavily-weathered cohesive soil ground containing gravels. The treatment of the portal sections of Shenyingxian tunnel, including small duct reinforcement, umbrella arch reinforcement and grouting reinforcement, is presented in the paper. |
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| Keywords: | twin-tube tunnel with large-span and small spacing soft ground portal section umbrella arch |
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