| 张集铁路旧堡隧道围岩初始应力反演分析及分级评价 |
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| 引用本文： | 王鹏程.张集铁路旧堡隧道围岩初始应力反演分析及分级评价[J].北京工业大学学报,2010,36(9). |
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| 作者姓名： | 王鹏程 |
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| 作者单位： | 北京交通大学,土木建筑学院,北京,100044 |
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| 基金项目： | 国家自然科学基金资助项目(50678002); 北京市科技计划课题资助项目(Y060506000007022) |
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| 摘 要： | 隧道围岩初始应力分析评价是进行围岩稳定性分析、实现隧道安全快速掘进的前提.采用位移反演分析和场区构造地应力分析2种方法,对旧堡隧道围岩初始应力状态进行分级评价.研究表明,开挖区段隧道横截面上平行洞轴方向为最大主应力方向,围岩的最大、最小主应力均大于自重应力,岩石强度应力比低,该隧道围岩的初始应力属于高地应力.
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| 关 键 词： | 隧道 围岩初始应力 高地应力 反演分析 |
Back Analysis and Grading Evaluation of Surrounding Rock Primary Stress in a Railway Tunnel |
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| WANG Peng-cheng.Back Analysis and Grading Evaluation of Surrounding Rock Primary Stress in a Railway Tunnel[J].Journal of Beijing Polytechnic University,2010,36(9). |
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| Authors: | WANG Peng-cheng |
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| Affiliation: | WANG Peng-cheng(Civil Engineering , Architecture College,Beijing Jiaotong University,Beijing 100044,China) |
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| Abstract: | The study and evaluation of primary stress of tunnel surrrounding rocks is a necessary premise of conducting stability analysis of surrounding rocks and achieving and quick safe tunnel excavation.Two methods,including displacement back analysis and in-situ geological structure stress analysis,are taken to conduct grading cvaluation on primary stress condition in a railway tunnel.The study results show that the direction of paralleling axis of the tunnel on cross section is the direction of maximum main stre... |
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| Keywords: | tunnel surrounding rock primary stress high level earth stress back analysis |
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