EXCAVATION METHOD ANALYSIS OF LITTLE DISTANCE TUNNEL IN FREEWAY

JIN Xiao-guang,LIU Wei,QIN Feng,WANG Jian-hua

Journal of Railway Engineering Society ›› 2004, Vol. 21 ›› Issue (2) : 63-68.

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PDF(558 KB)
Journal of Railway Engineering Society ›› 2004, Vol. 21 ›› Issue (2) : 63-68.

EXCAVATION METHOD ANALYSIS OF LITTLE DISTANCE TUNNEL IN FREEWAY

  • JIN Xiao-guang1,2, LIU Wei3, QIN Feng3,WANG Jian-hua4
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Abstract

Little distance tunnel is a special tunnel structural style that double tunnel clear distance is situated between multiple arch tunnel distance and apparel separation tunnel minimum clear distance according to tunnel design regulations. Double tunnel distance is so small that double tunnel interaction is considerable at tunnel excavation and there be strongly influence to tunnel surrounding rock stability especially situating between double tunnel rock mass. Therefore, inquiring into safety reasonable and economical freeway little distance tunnel method of excavation is very necessary. Combined a freeway little tunnel engineering practice (clear distance equal to 4. 0 m, buried depth equal to 30. 0 m)at two-class surround rock, through three-dimension elastic-plastic element numerical simulation, freeway tunnel surrounding rock approach failure degree and deformation displacement characters have been analysed. When the tunnel rock mass excavated according to cheek pilot method, array pattern of cheek pilot method and bench method, and up-down bench method of double tunnel. Based on the analysis of three-type excavation method, we inquired into good and bad, adapting of each method. This study will have provided scientific basis for freeway little distance tunnel design and excavation.

Key words

little distance tunnel} method of excavation / numerical simulation j degree of surrounding rock approach failure / deformation of surround rock

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JIN Xiao-guang, LIU Wei, QIN Feng, et al. EXCAVATION METHOD ANALYSIS OF LITTLE DISTANCE TUNNEL IN FREEWAY[J]. Journal of Railway Engineering Society, 2004, 21(2): 63-68

References

[1]谭仁辉主编.公路隧道[M].重庆:重庆大学出版社, 2001.
[2]刘艳青,钟世航,卢汝绥等.小净距并行隧道力学状态的 试验研究[J].岩石力学与工程学报,2000. 19(2).
[3]李斯海.度门市仙岳山隧道围岩稳定性三维有限元计算 分析[J].岩石力学与工程学报,2000,19(5).
[4]公路隧道设计规范(JTJ026-90)[S]. 1990.
[5]万明富.隧道围岩净距讨论与小净距隧道研究[J].公路, 2000,NO. 7.
[6]刘伟,陈少华,姚国芳等.山区髙速公路隧道结构型式的 初步研究[A]. 2001年全国公路隧道学术会议论文集,北 京.人民交通出版社,2001.
[7]倪新兴.小净距隧道施工技术[J].西部探矿工程,2002, NO. 3.
 
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