| 浅埋偏压连拱隧道中导洞坍方数值分析与处治 |
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| 引用本文： | 李志勇,晏莉,阳军生. 浅埋偏压连拱隧道中导洞坍方数值分析与处治[J]. 岩土力学, 2007, 28(1): 102-106 |
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| 作者姓名： | 李志勇 晏莉 阳军生 |
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| 作者单位： | 1. 中南大学 土木建筑学院，长沙 410075；2.湖南省交通科学研究院，长沙 410007 |
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| 摘 要： | 某连拱隧道在中导洞施工时出现坍方。针对该隧道的工程实际情况，建立了数值分析模型，采用FLAC软件模拟了隧道施工力学行为，从围岩塑性区分布、位移情况以及锚杆和混凝土衬砌内力分布情况分析了隧道变形和坍塌发生的原因，并且结合工程实际提出了有效地处治方法。
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| 关 键 词： | 连拱隧道 浅埋隧道 偏压 坍方 数值分析 |
| 文章编号： | 1000-7598-（2007）01-0102-05 |
| 收稿时间： | 2005-03-16 |
| 修稿时间： | 2005-03-16 |
Numerical analysis and treatment of a collapsed middle drift for shallow multi-arch tunnel under unsymmetrical pressure |
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| LI Zhi-yong,YAN Li,YANG Jun-sheng. Numerical analysis and treatment of a collapsed middle drift for shallow multi-arch tunnel under unsymmetrical pressure[J]. Rock and Soil Mechanics, 2007, 28(1): 102-106 |
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| Authors: | LI Zhi-yong YAN Li YANG Jun-sheng |
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| Affiliation: | 1. School of Civil and Architectural Engineering, Central South University, Changsha 410075. China; 2. Hunan Institute of Communications and Transport, Changsha 410007, China |
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| Abstract: | During construction of the middle drift of a multi-arch tunnel, collapse accident occurred. According to the field geological and construction conditions, the numerical model is set up; and the commercial software FLAC is adopted to simulate the behaviors of the tunnel and surrounding rock. Based on the results of plastic zones in surround rocks, deformations in rock and lining, and the inner forces within rock bolts and reinforced concrete lining, the deformation of the tunnel and the causes of tunnel collapse are analyzed. The corresponding effective remedy measures are proposed; and good results are achieved. |
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| Keywords: | multi-arch tunnel shallow tunnel unsymmetrical pressure collapse numerical analysis |
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