| 超前预支护技术在穿河隧道施工中的应用 |
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| 引用本文： | 李福恩,牛紫龙.超前预支护技术在穿河隧道施工中的应用[J].铁道建筑,2012(8):54-57. |
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| 作者姓名： | 李福恩 牛紫龙 |
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| 作者单位： | 1. 郑州航空工业管理学院土木建筑工程学院,河南郑州,450015
2. 中铁隧道集团有限公司,河南洛阳,471009 |
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| 摘 要： | 长沙市湘江大道浏阳河隧道下穿浏阳河,水下暗挖隧道K1+020—K1+110段,覆土厚度最薄处仅14 m,该隧道具有小净距、强风化、浅埋、水下暗挖的特点。以长沙市湘江大道浏阳河隧道暗挖段施工为例,介绍了该工程所采用的长短管棚和小导管相结合的超前支护、玻璃纤维锚杆超前加固、地面垂直注浆和全断面超前帷幕预注浆等复杂地质条件下暗挖段超前综合加固支护施工技术,有效地保障了暗挖段的施工质量和安全。
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| 关 键 词： | 隧道 超前支护 注浆 管棚法 |
Application of forepoling in construction of under-river tunnel |
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| LI Fuen
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NIU Zilong.Application of forepoling in construction of under-river tunnel[J].Railway Engineering,2012(8):54-57. |
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| Authors: | LI Fuen NIU Zilong |
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| Institution: | 1.Civil engineering college,Zhengzhou Institute of Aeronautical Industry Management,Zhengzhou Henan 450015,China;2.China Railway Tunnel Group Co.Ltd,Luoyang Henan 471009,China) |
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| Abstract: | Liuyang river tunnel on changsha xiangjiang road is under-crossing the liuyang river,the thinnest thickness of covering soil is only 14 m on K1+020—K1+110 section in underwater tunnel which has the characteristics of small clear distance,strongly weathering,shallow,underwater subsurface excavation.Taking liuyang river tunnel construction of underground section on changsha xiangjiang road as an example,this paper introduced integrative advanced reinforce support technology of underground section under complex geological conditions,such as the advanced support of combing long-short pipe shed with small pipe,glass fiber advanced reinforce,ground vertical advanced bolt grouting and whole-section advanced grouting,etc.,which effectively guarantee construction quality and safety of the underground section. |
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| Keywords: | Tunnel Advance support Grouting Pipe-shed method |
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