| 特大断面隧道爆破开挖方法对比分析研究 |
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| 引用本文： | 王焱,欧阳天烽,谭绪凯.特大断面隧道爆破开挖方法对比分析研究[J].西部交通科技,2010(4):50-57. |
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| 作者姓名： | 王焱 欧阳天烽 谭绪凯 |
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| 作者单位： | 1. 重庆交通大学河海学院,重庆,400074
2. 重庆交通大学土木建筑学院,重庆,400074 |
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| 摘 要： | 文章以兰渝线关子岭隧道为依托，针对特大断面隧道V级围岩段采取光面爆破与预裂爆破两种爆破方案进行对比分析。结果表明：大断面隧道爆破开挖施工中最大位移出现在拱项部位，施工中应加强对拱顶部位及其他关键点的监测；最大主应力出现在仰拱中点和拱腰部位，施工中须加强对仰拱中点和拱腰部位的支护。
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| 关 键 词： | 特大断面隧道 光面爆破 预裂爆破 数值分析 |
The Comparison of Blasting and Excavation Method on Large Cross-section Tunnel |
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| WANG Yan,OUYANG Tian-feng,TAN Xu-kai.The Comparison of Blasting and Excavation Method on Large Cross-section Tunnel[J].Western China Communication Science & Technology,2010(4):50-57. |
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| Authors: | WANG Yan OUYANG Tian-feng TAN Xu-kai |
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| Institution: | 1. School of River and Ocean Engineering, School of River and Ocean Engineering, Chongqing,400074 2. School of Civil Engineering and Architecture, Chongqing Jiaotong University, Chongqing, 400074) |
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| Abstract: | Based on the Lan-yu line, Guanzlling tunneh the article conducts a comparative analysis on smoothing blasting method and or pre-splitting blasting method targeting V-level large cross-section rock wall.The results have shown that the largest replacement occurs at vault session during blasting construction, which needs extra monitoring as well as many other key locations.As for the main stress force, it occurs at the center of the inverted arch and hance,which also need special support. |
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| Keywords: | Large cross-section tunnel Smooth blasting Presplitting blasting Numerical analysis |
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