| 小间距长距离上下重叠盾构隧道施工关键技术 |
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| 引用本文： | 方东明,李平安.小间距长距离上下重叠盾构隧道施工关键技术[J].隧道建设,2010,30(3):309-312. |
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| 作者姓名： | 方东明 李平安 |
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| 作者单位： | 深圳市地铁三号线投资有限公司,广东,深圳,518172 |
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| 摘 要： | 针对重叠隧道小间距、长距离的特点，根据三维数值模拟分析结论提出“先下后上”的总体施工原则，重点阐述盾构掘进控制、夹层土注浆加固和洞内临时支撑台车隧道加固等关键措施，通过监测结果有效验证了其成功，可为今后的重叠隧道设计、施工管理提供经验借鉴。
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| 关 键 词： | 小间距 长距离 重叠隧道 注浆加固 支撑台车 施工技术 |
| 收稿时间： | 2010-04-30 |
| 修稿时间： | 2010-05-22 |
Key Construction Technology for Long Small-spaced Vertical-overlapped Shield-bored Tunnels |
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| FANG Dongming,LI Ping'an.Key Construction Technology for Long Small-spaced Vertical-overlapped Shield-bored Tunnels[J].Tunnel Construction,2010,30(3):309-312. |
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| Authors: | FANG Dongming LI Ping'an |
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| Institution: | Shenzhen Metro No.3 Line Investment Co., Ltd., Shenzhen 518172, Guangdong, China |
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| Abstract: | Hong-Lao-Shai section of line 3 of Shenzhen Metro is a long small-spaced vertical-overlapped shield-bored tunnel. The scheme that ＂the lower tunnel is constructed in ahead of the upper tunnel＂ is adopted on basis of the 3D numerical simulation results. The key technical measures taken in the construction of the tunnel, including the control of the tunnel boring, the grouting consolidation of the soils between the lower tunnel and the upper tunnel and the bracing of the lower tunnel by means of temporary support trolleys, are focused. The monitoring records indicate that the measures taken are effective and sucessful. The paper can be served as reference for the design and construction of similar overlapped tunnels in the future. |
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| Keywords: | small spacing long distance overlapping tunnel grouting consolidation support trolley construction technology |
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