| 山谷地带浅埋大跨隧道地表竹管注浆地层预加固方法 |
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| 引用本文： | 胡鑫,阳军生,钟放平,任会,张建军.山谷地带浅埋大跨隧道地表竹管注浆地层预加固方法[J].中南公路工程,2012(1):32-36. |
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| 作者姓名： | 胡鑫 阳军生 钟放平 任会 张建军 |
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| 作者单位： | [1]中南大学土木工程学院,湖南长沙410075 [2]湖南省长湘高速公路建设开发有限公司,湖南长沙410217 [3]湖南省交通规划勘察设计院,湖南长沙410008 [4]中铁十二局集团第七工程有限公司,湖南长沙410004 |
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| 基金项目： | 交通运输部京珠复线长湘高速公路两型社会科技示范工程攻关项目（CXKJSF0106-1） |
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| 摘 要： | 以京珠复线长沙至湘潭高速公路邓家湾隧道为依托,针对该隧道左线进口端位居山谷地带、开挖断面大、覆盖层薄、围岩破碎等特点,提出在洞身开挖范围内采用地表竹管注浆,而在边坡外侧采用倾斜地表钢管注浆预加固方案。暗挖实施效果表明：通过地表注浆预加固,改善了围岩的物理力学性能,缩小了开挖变形产生的松弛区范围,加快了施工进度,确保了施工安全,取得了较好的经济和社会效益。
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| 关 键 词： | 山谷地带 浅埋大跨隧道 竹管注浆 地层预加固 |
Ground Pre-reinforcement of Shallow Large Span Tunnel in Valley Region Area Using Bamboo Tube Grouting |
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| HU Xin,YANG Junsheng,ZHONG Fangping,REN Hui,ZHANG Jianjun.Ground Pre-reinforcement of Shallow Large Span Tunnel in Valley Region Area Using Bamboo Tube Grouting[J].Central South Highway Engineering,2012(1):32-36. |
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| Authors: | HU Xin YANG Junsheng ZHONG Fangping REN Hui ZHANG Jianjun |
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| Affiliation: | 1.School of Civil Engineering,Central South University,Changsha 410075,China;2.Hunan Changxiang Highway Construction ＆ Development Co.Ltd.,Changsha 410217,China;3.Hunan Communications Planning,Survey ＆ Design Institute,Changsha 410008,China;4.The 7th Branch of the 12th Bureau Group Co.Ltd,Changsha 410004,China) |
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| Abstract: | Taking Changsha-Xiangtan highway of a double track from Beijing-Zhuhai Expressway DengJiawan-tunnel as an example,based on the left route entrance of the tunnel in the valley region,excavation section large,covering layer thin,rock crushing,etc,this thesis puts forward excavation scope within the body in the tunnel with the bamboo tube grouting,and in the outer slope by tilting the grouting steel pipe pre-reinforcement scheme.After the implementation of ground grouting pre-reinforcement,implement results show that the physical and mechanical performances of the rock were improved,the scope of the relaxation area due to excavation narrowed,construction progress quickened.It ensure the construction safety and good economical and technical results were obtained. |
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| Keywords: | Valley region shallow large span tunnel bamboo tube grouting ground pre-reinforcement |
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