| 基于构造应变对隧道初始地应力场的反演分析 |
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| 引用本文： | 刘廷,刘宇航,刘浩,李萌. 基于构造应变对隧道初始地应力场的反演分析[J]. 安全与环境工程, 2012, 19(5): 136-139. DOI: 10.3969/j.issn.1671-1556.2012.05.034 |
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| 作者姓名： | 刘廷 刘宇航 刘浩 李萌 |
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| 作者单位： | 1.中国地质大学工程学院,武汉,430074;2.中国地质大学艺术与传媒学院,武汉,430074 |
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| 摘 要： | 岩体中的初始地应力场是岩体稳定性与工程运营必须考虑的重要因素.以东营子隧道工程为例,以隧址区构造应变作为待求解的约束条件,结合工程地质条件和实测地应力资料,运用有限元软件对隧址区地应力场进行了回归反演分析.结果表明:基于区域构造应变获得的隧址区初始应力场克服了边界条件对地应力场的影响,更加准确地反映了隧址区地应力场的分布规律,可为隧道围岩稳定性分析提供准确的位移边界条件.
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| 关 键 词： | 隧道 初始地应力场 构造应变 有限元 回归反演分析 |
Inversion Analysis of Initial Crustal Stress Field of Tunnel Based on Structure Strain |
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| LIU Ting , LIU Yu-hang , LIU Hao , LI Meng. Inversion Analysis of Initial Crustal Stress Field of Tunnel Based on Structure Strain[J]. Safety and Environmental Engineering, 2012, 19(5): 136-139. DOI: 10.3969/j.issn.1671-1556.2012.05.034 |
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| Authors: | LIU Ting LIU Yu-hang LIU Hao LI Meng |
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| Affiliation: | 1.Faculty of Engineering,China University of Geosciences,Wuhan 430074,China; 2.School of Arts and Communication,China University of Geosciences,Wuhan 430074,China) |
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| Abstract: | Initial crustal stress of rock is an important factor to rock mass stability and project operation.Taking Dongyingzi Tunnel engineering for example,this paper takes the structure strain as the constraint condition,combines measured stresses data with geological conditions,and uses finite element software to make the regression and inversion analysis of crustal stress field.The results show that the method overcomes the restraint of boundary conditions to initial crustal stress,more accurately reflects the crustal stress field of the tunnel,and provides the accurate displacement boundary conditions for the stability analysis of tunnel surrounding rock. |
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| Keywords: | tunnel initial crustal stress field structure strain finite element regression and inversion analysis |
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