| 深埋隧洞TBM卡机事故风险分析 |
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| 引用本文： | 温森,徐卫亚.深埋隧洞TBM卡机事故风险分析[J].长江科学院院报,2008,25(5). |
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| 作者姓名： | 温森 徐卫亚 |
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| 作者单位： | 河海大学岩土力学与堤坝工程教育部重点实验室,南京,210098;河海大学岩土工程科学研究所,南京,210098;河海大学岩土力学与堤坝工程教育部重点实验室,南京,210098;河海大学岩土工程科学研究所,南京,210098 |
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| 摘 要： | 卡机事故是制约TBM工作效率的重要因素之一,目前对其的预测多是确定性的有限元分析方法.基于此,将TBM盾壳与开挖轮廊面之间预留的间隙和隧道径向变形之差作为功能函数;采用ANSYS中PDS模块即随机有限元预测隧道变形量及发生卡机的风险率.同时,采用考虑了参数随机性的弹塑性解析解进行求解并将其与随机有限元的结果进行对比.通过对南水北调西线一个隧洞断面变形的计算,比较了两种方法,结果显示随机有限元计算结果明显大于解析解的结果.
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| 关 键 词： | 风险分析 TBM卡机 随机有限元 隧道变形 |
Risk Analysis on TBM Jamming in Deep Buried Tunnel |
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| WEN Sen,XU Wei-ya.Risk Analysis on TBM Jamming in Deep Buried Tunnel[J].Journal of Yangtze River Scientific Research Institute,2008,25(5). |
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| Authors: | WEN Sen XU Wei-ya |
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| Affiliation: | WEN Sen1,2,XU Wei-ya1,2(1.Key Laboratory of Ministry of Education for Geomechanics , Embankment Engineering,Hohai University,Nanjing 210098,China,2.Geotechnical Research Institute,China) |
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| Abstract: | TBM jamming is one of important factors that affect a TBM efficiency,and the deterministic finite element method is mainly adopted to predict the accident now.According to this,the difference between reserved clearance between a TBM shield and a tunnel outline and tunnel radial deformation is used as performance function.PDS module in ANSYS namely Stochastic FEM,is adopted to predict tunnel deformation and the probability of TBM jamming.Moreover,the elastic-plastic analytical solution that takes stochastic ... |
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| Keywords: | risk analysis TBM jamming stochastic FEM tunnel deformation |
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