| 浅埋隧道施工围岩变形及结构内力监测分析 |
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| 引用本文： | 徐望国,石熊,陈晓斌.浅埋隧道施工围岩变形及结构内力监测分析[J].矿业工程研究,2010,25(4). |
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| 作者姓名： | 徐望国 石熊 陈晓斌 |
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| 作者单位： | 1. 湖南科技大学土木工程学院,湖南湘潭,411201
2. 中南大学土木建筑学院,湖南长沙,410075 |
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| 基金项目： | 中国博士后科学基金资助项目(20080440996) |
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| 摘 要： | 结合VI级围岩浅埋偏压隧道CRD法开挖施工特点,布设了变形观测元件及应力观测元件,对施工过程中围岩变形及结构内力进行了监测和分析.变形测试结果说明CRD法各分部施工相互影响明显,隧道内侧围岩压力普遍大于外侧围岩压力,并且随着其他分部的施工具有明显加大的趋势.内力监测结果表明钢支撑轴力主要为压应力,并且拱腰位置轴力稍大于其他部位.测试结果分析表明,合理的工序应该是先山体外侧开挖并施工初期支护,然后山体内侧开挖施工.
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| 关 键 词： | 偏压隧道 交叉中隔壁(CRD)法 变形监测 内力监测 合理工序 |
Rock mass deformation and structure force surveying analysis of shallow tunnel construction in railway engineering |
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| XU Wangguo,SHI Xiong,CHEN Xiaobin.Rock mass deformation and structure force surveying analysis of shallow tunnel construction in railway engineering[J].Mineral Engineeering Reseach,2010,25(4). |
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| Authors: | XU Wangguo SHI Xiong CHEN Xiaobin |
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| Affiliation: | XU Wangguo1,SHI Xiong1,CHEN Xiaobin2(1.School of Civil Engineering,Hunan University of Science and Technology,Xiangtan 411201,China,2.School of Civil and Architectural Engineering,Central South University,Changsha 410075,China) |
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| Abstract: | According to the construction of shallow tunnel sustained unsymmetrical pressure,which was excavated by CRD method in the VI-class surrounding rock,the arc settlement convergence and the inner force surveying points were built in the tunnel structure to monitor the rock mass deformation and inner force,and the surveying data were analyzed.The rock deformation surveying results showed that the mutual influence of each heading excavation of CRD cannot be neglected.The surrounding rock pressure of inside tunne... |
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| Keywords: | shallow tunnel center cross diagram(CRD) method deformation surveying inner force surveying reasonable construction order |
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