| 破碎岩层位置对隧道稳定性的影响研究 |
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| 引用本文： | 何俊辉,赵艳纳.破碎岩层位置对隧道稳定性的影响研究[J].西部交通科技,2013(5):60-63,69. |
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| 作者姓名： | 何俊辉 赵艳纳 |
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| 作者单位： | 1. 广西交通投资集团有限公司,广西南宁,530028
2. 广西高速公路投资有限公司,广西 南宁,530021 |
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| 摘 要： | 为揭示破碎岩层位置对隧道稳定性的影响规律,文章以某节理裂隙岩体隧道为研究对象,根据破碎岩层位置的不同分别建立6个计算模型,采用离散元软件UDEC对各个模型进行仿真模拟,并对比分析破碎岩层不同位置下的隧道开挖后应力和位移响应云图。结果表明:当破碎岩层位移隧道中线以上时,对隧道稳定性影响最大;当破碎岩体层位于隧道中心以下,对隧道稳定性影响较小。
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| 关 键 词： | 节理裂隙岩体隧道 破碎岩层 离散元 |
Impact Research of Broken Rock Location on the Tunnel Stability |
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| HE Jun-hui
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ZHAO Yan-na.Impact Research of Broken Rock Location on the Tunnel Stability[J].Western China Communication Science & Technology,2013(5):60-63,69. |
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| Authors: | HE Jun-hui ZHAO Yan-na |
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| Institution: | 1.Guangxi Communications Investment Group Co.,Ltd.,Nanning,Guangxi,530028;2.Guangxi Expressway Investment Co.,Ltd.,Nanning,Guangxi,530021) |
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| Abstract: | In order to reveal the impact rules of broken rock location on the tunnel stability,the article,with a jointed rock mass tunnel as the research object,established six computational models according to the different location of broken rocks,conducted the simulation on these six models by using the discrete element software UDEC,and conducted the compar-ative analysis on the stress and displacement response contour under the different locations of broken rocks after tunnel excavation.The results showed that：When the broken rock is a-bove the midline of the tunnel,the impact on the tunnel stability is maximal;while the broken rock layer is located below the center of the tunnel,the impact on the tunnel stability is smaller. |
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| Keywords: | Jointed rock mass tunnel Broken rock Discrete element |
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