| 110m长管幕在浅埋暗挖隧道中的应用研究 |
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| 引用本文： | 曾宇晖,岳向红.110m长管幕在浅埋暗挖隧道中的应用研究[J].现代隧道技术,2010,47(1). |
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| 作者姓名： | 曾宇晖 岳向红 |
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| 作者单位： | 1. 厦门路桥建设集团有限公司,厦门,361026
2. 武汉中科智创岩土技术有限公司,武汉,430071 |
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| 摘 要： | 结合厦门高崎互通连接线下穿鹰厦铁路右线隧道,对110 m长管幕的施工技术和应用效果进行研究.通过采用先进的导向仪器和定向钻进技术,有效地控制了管幕的施工精度;采用挤扩法扩孔和"前拉后夯"工艺法施作管幕,减小了管幕施工对周边环境的影响.现场监测结果表明,管幕施工所引起的地表沉降较小,在隧道开挖过程中,管幕所起的支护作用非常明显,没有出现迅速沉陷、塌方等工程事故.但是由于地层本身非常松软,二次衬砌混凝土也未能及时跟上,在火车的动荷载和隧道开挖双重作用下地表测点最大累计沉降达到了90 mm.
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| 关 键 词： | 隧道工程 浅埋暗挖 管幕 现场监测 |
Study on 110 m Tube-Roofing Applied in a Tunnel Built by Shallow Mining Excavation |
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| Zeng Yuhui,Yue Xianghong.Study on 110 m Tube-Roofing Applied in a Tunnel Built by Shallow Mining Excavation[J].Modern Tunnelling Technology,2010,47(1). |
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| Authors: | Zeng Yuhui Yue Xianghong |
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| Institution: | Zeng Yuhui1 Yue Xianghong2 (1 Xiamen Road & Bridge Construction Group Co.,Ltd.,Xiamen 361026,2 Wuhan RSM Intelligence Geotechnique Co.,Wuhan 430071) |
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| Abstract: | Based on Xiamen Gaoqi tunnel under-passing Yinxia railroad, the construction techniques and the effeciency of 110 m tube-roofing were studied. The construction accuracy of tube-roofing was satisfied by using advanced guiding instruments and directional plunge technique. The effect of construction on surrounding environment was restricted by press-expanding dilating of holes and by pulling in front and back tampering of tubes. By analysing monitored data, surface settlements caused by tube-roofing constructi... |
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| Keywords: | Tunnel engineering Shallow mining excavation Tube-roofing In-situ monitoring |
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