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浙江大学学报(工学版)
J4  2010, Vol. 44 Issue (10): 1851-1856    DOI: 10.3785/j.issn.1008-973X.2010.10.002
岩土工程、土木及建筑工程     
隧洞破坏机理及深浅埋分界标准
郑颖人1, 徐浩2, 王成2, 肖强1
1 后勤工程学院 重庆市地质灾害研究中心,重庆 400041； 2 重庆交通大学 土木建筑学院,重庆400074
Failure mechanism of tunnel and dividing line standard between shallow and deep bury
ZHENG Ying-ren1, XU Hao2, WANG Cheng2, XIAO Qiang1
1. Chongqing Geological Hazard Prevention Research Center, Logistical Engineering University, Chongqing 400041, China; 2. School of Civil Engineering and Architecture, Chongqing Jiaotong University, Chongqing 400074, China
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摘要：

通过模型试验与数值分析方法将隧洞破裂面与稳定性引入到定量分析,采用有限元强度折减法,求得围岩破裂面的位置及围岩的稳定安全系数.研究表明,浅埋拱形隧洞破坏来自拱顶,深埋隧洞来自侧壁.通过从浅埋到深埋的数值分析,研究隧洞从浅埋到深埋的破坏过程.结果表明：对于矩形隧洞,当埋深小时逐渐形成浅埋压力拱,当到达某一埋深时,浅埋压力拱消失,同时深埋压力拱（普氏压力拱）出现,可以确定深、浅埋的分界线,当埋深增大至某一深度时,破坏从拱顶转向侧壁；对于拱形隧洞,当埋深小时出现浅埋压力拱,但不出现深埋压力拱,当达到一定埋深后,破坏从拱顶转向侧壁,可以确定深、浅埋的分界线.深、浅埋的分界线主要取决于洞跨与洞形,与围岩强度关系不大,浅埋时围岩可以是稳定的.
Abstract:

The stability of tunnel was induced to the quantitative analysis through model test and numerical analysis. The location of fracture surface and the stability safety factor of surrounding rock were analyzed by adopting the strength reduction finite element method (FEM). Results show that the failure of shallowburied arch tunnel is from the vault and the failure of deepburied tunnel is from the sidewall. The failure process of tunnel from shallowburied to deepburied was analyzed. For the rectangle tunnel, the shallowburied pressure arch gradually forms when the buried depth is small, and it disappears at a certain depth and meanwhile the deepburied pressure arch (Protodyakonov’s arch) appears. Then the dividing line between deepbury and shallowbury can be identified. The failure moves from the vault to the sidewall if increasing the bury depth to a certain depth. For the arch tunnel, the shallowburied pressure arch appears and there is no deepburied pressure arch when the bury depth is small. Failure moves from the vault to the sidewall at a certain bury depth, so the dividing line between deepbury and shallowbury can be identified. The dividing line is mainly decided by the span and the shape of the tunnel and has little relationship with the strength of the surrounding rock， and shallowburied tunnel can be stable.
出版日期: 2010-10-01
:  U 45  
基金资助:

国家“973”重点基础研究发展规划资助项目(2010CB732006)；重庆市自然科学基金资助项目(2009BC0002).
作者简介: 郑颖人(1933—)，男，浙江镇海人，中国工程院院士，教授，博导，从事岩土力学、岩土工程与地下工程的研究.
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引用本文:

郑颖人, 徐浩, 王成, 肖强. 隧洞破坏机理及深浅埋分界标准[J]. J4, 2010, 44(10): 1851-1856.

ZHENG Ying-Ren, XU Gao, WANG Cheng, XIAO Jiang. Failure mechanism of tunnel and dividing line standard between shallow and deep bury. J4, 2010, 44(10): 1851-1856.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2010.10.002    或    http://www.zjujournals.com/eng/CN/Y2010/V44/I10/1851

［1］ 于学馥,郑颖人,刘怀恒,等.地下工程围岩稳定分析［M］.北京：煤炭工业出版社,1983.

［2］ ZIENKIEWICZ O C,HUMPHESON C,LEWIS R W. Associated and nonassociated viscoplasticity and plasticity in soil mechanics ［J］. Geotechnique,1975,25(4)：671689.

［3］ 赵尚毅,郑颖人,时卫民,等.用有限元强度折减法求边坡稳定安全系数［J］.岩土工程学报,2002,24(3): 343346.

ZHAO Shangyi,ZHENG Yingren,SHI Weimin,et al. Slope safety factor analysis by strength reduction FEM ［J］. Chinese Journal of Geotechnical Engineering,2002,24(3): 343346.

［4］ 郑颖人,赵尚毅,邓楚键,等.有限元极限分析法发展及其在岩土工程中的应用［J］.中国工程科学,2006,8(12)：3961.

ZHENG Yingren,ZHAO Shangyi,DENG Chujian,et al. Development of finite element limit analysis method and its applications in geotechnical engineering ［J］. Engineering Science,2006,8(12)： 3961.

［5］ 郑颖人,赵尚毅.岩土工程极限分析有限元法及其应用［J］.土木工程学报,2005,38(1): 9199.

ZHENG Yingren, ZHAO Shangyi. Geotechnical engineering limit analysis finite element method and its applications ［J］. China Civil Engineering Journal, 2005, 38(1): 9199.

［6］ 郑颖人,胡文清,王敬林.强度折减有限元法及其在隧道与地下洞室工程中的应用［C］∥中国土木工程学会第11届、隧道及地下工程分会第13届年会论文集.北京：［s. n.］,2004: 239243.

ZHENG Yingren,HU Wenqing,WANG Jinglin. Strength reduction FEM and its application in tunnel and underground engineering ［C］∥ Symposium of the 11th Annual Meeting of China Civil Engineering Society and the 13th Annual Meeting of Tunnel and Underground Branch. Beijing：［s. n.］,2004: 239243.

［7］ 张黎明,郑颖人,王在泉,等.有限元强度折减法在公路隧道中的应用探讨［J］.岩土力学,2007,28(1)：97101.

ZHANG Liming,ZHENG Yingren,WANG Zaiquan,et al. Application of strength reduction finite element method to road tunnels ［J］. Rock and Soil Mechanics,2007,28(1)：97101.

［8］ 郑颖人,邱陈瑜,张红,等.关于土体隧洞围岩稳定性分析方法的探索［J］.岩石力学与工程学报,2008,27(10): 19681980.

ZHENG Yingren, QIU Chenyu, ZHANG Hong, et al. Exploration of stability analysis methods of surrounding rocks in soil tunnel ［J］. Chinese Journal of Rock Mechanics and Engineering, 2008, 27(10): 19681980.

［9］ 邱陈瑜,郑颖人,宋雅坤.采用ANSYS软件讨论无衬砌黄土隧洞安全系数［J］.地下空间与工程学报,2009,5(2): 291296.

QIU Chenyu, ZHENG Yingren, SONG Yakun, et a1. Exploring the safety factors of unlined loess tunnel by ANSYS ［J］. Chinese Journal of Underground Space and Engineering, 2009, 5(2): 291296.

［10］ ZHENG Yingren, TANG Xiaosong, DENG Chujian, et al. Strength reduction and steploading finite element approaches in geotechnical engineering ［J］. Journal of Rock Mechanics and Geotechnical Engineering, 2009, 1(1): 2130.
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