| 偏压错台大跨隧道最小安全净距及围岩稳定性分析 |
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| 引用本文： | 王更峰,张永兴,熊晓晖,王桂林. 偏压错台大跨隧道最小安全净距及围岩稳定性分析[J]. 工业建筑, 2011, 41(2): 39-44 |
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| 作者姓名： | 王更峰 张永兴 熊晓晖 王桂林 |
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| 作者单位： | 重庆大学土木工程学院,重庆,400045 |
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| 摘 要： | 结合魁歧偏压错台大跨小净距隧道,采用ANSYs有限元软件建屯三维数值模型,通过分析围岩位移、等效塑性应变以及中间岩柱安全系数随净距的变化,综合确定魁歧隧道最小净距为0.55倍最大毛洞开挖跨度是安全的.分别采用CRD法、双侧肇导坑法模拟隧道开挖过程,采用3种不同中间岩柱支护参数,研究小同围岩条件下隧道围岩稳定性.研究结果...
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| 关 键 词： | 小净距隧道 安全净距 围岩稳定性 ANSYS数值模拟 |
STUDY ON SAFE NET DISTANCE AND ROCK STABILITY OF UNSYMMETRICAL PRESSURE LARGE SPAN NEIGHBOURHOOD TUNNEL |
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| Wang GengCeng,Zhang yongxing,Xiong Xiaohui,Wang Guilin. STUDY ON SAFE NET DISTANCE AND ROCK STABILITY OF UNSYMMETRICAL PRESSURE LARGE SPAN NEIGHBOURHOOD TUNNEL[J]. Industrial Construction, 2011, 41(2): 39-44 |
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| Authors: | Wang GengCeng Zhang yongxing Xiong Xiaohui Wang Guilin |
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| Affiliation: | Wang Gengfeng Zhang Yongxing Xiong Xiaohui Wang Guilin(School of Civil Engineering,Chongqing University,Chongqing 400045,China) |
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| Abstract: | According to construction of Kuiqi two bores and eight lanes tunnel with super-large section and span,a 3D mathematic model was setup using ANSYS software,it was analyzed the variation of tunnel rocks displacement,equivalent plastic strain and the safety factors with different net distances and determined the safety net distance of large span neighbourhood tunnels.In the process of tunnel excavation simulation,three support parameters of middle rock pillar were used to study the force and deformation charac... |
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| Keywords: | neighbourhood tunnel safe net distance rock stability ANSYS numerical simulation |
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