含软弱夹层隧道围岩松动破坏模型试验与分析

doi:10.13722/j.cnki.jrme.2015.0200

摘要
图/表
参考文献(21)
相关文章 (15)

全文: PDF (1988 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要软弱夹层对隧道围岩稳定起着决定性作用，其松动区、破坏区的形成机制及范围是制定合理支护措施的重要依据。以穿越断层带的高速公路隧道工程为背景，利用室内相似模型试验，对无支护条件下软弱夹层围岩松动区、破坏区的发展过程进行了研究。引入弹塑性损伤本构模型，对试验工况进行有限元数值模拟，与模型试验进行对比验证。研究表明：(1) 隧道围岩松动区与破坏区具有相似的形成机制，受到软弱夹层的影响，围岩由下盘局部破坏开始扩展至上盘形成拱形为止；(2) 隧道开挖后上盘围岩内的应力变化明显大于下盘围岩，根据周向应力增量大小，可以确定出围岩松动区的范围；(3) 数值分析中采用损伤变量判别的围岩破坏区与模型试验吻合较好，具有理论可行性。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	黄锋1
	2
	朱合华3
	徐前卫4

关键词 ：岩石力学, 软弱夹层, 隧道围岩, 松动破坏, 模型试验, 数值模拟

Abstract：Since weak interlayer often has a deterministic effect on the stability of tunnel surrounding rock mass. Its formation mechanism and area of loosening and failure zoon are the important basis for deciding reasonable support method. By taking a high way tunnel engineering through faults，lab similar model test was chosen to study the progressive process of surrounding rock mass loosening and failure zoon with weak interlayer in the case of no support system. An elasto-plastic damage constitutive model is introduced to numerically simulate the case of model test by FEM，which will be compared with model test. The study shows that：(1) the loosening zone and failure one of tunnel surrounding rock mass have similar formation mechanism with each other，which are initialize at lower part and expanded to upper one with arch shape because of the impact of interlayer. (2) The surrounding rock mass stress variations of upper part are obviously bigger than those of lower one after tunnel excavation. Based on the value of tangential stress increment，the area of loosening zone can be determinate. (3) Discriminating by damage variable in numerical analysis，the failure zoon of surrounding rock mass has a good agreement with that of model test，which is proved theoretically feasible.

Key words： rock mechanics weak interlayer tunnel surrounding rock loosening and failure model test numerical simulation

引用本文:

黄锋1，2，朱合华3，徐前卫4. 含软弱夹层隧道围岩松动破坏模型试验与分析[J]. 岩石力学与工程学报, 2016, 35(S1): 2915-2924.
HUANG Feng1，2，ZHU Hehua3，XU Qianwei4. Model test and analysis about loose failure of tunnel surrounding rock mass containing weak interlayer. , 2016, 35(S1): 2915-2924.

链接本文:

https://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2015.0200 或 https://rockmech.whrsm.ac.cn/CN/Y2016/V35/IS1/2915

[1] 万飞，谭忠盛，马栋. 关角隧道F2–1断层破碎带支护结构优化设计[J]. 岩石力学与工程学报，2014，33(3)：531–538.(WAN Fei，TAN Zhongsheng，MA Dong. Optimizing design of support structure for Guanjiao tunnel in fault-rupture zone F2–1[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(3)：531–538.(in Chinese))

[2] 吴旭平，杨新安，李亚翠，等. 含软弱夹层浅埋隧道变形特性及控制指标研究[J]. 岩石力学与工程学报，2014，33(增1)：2 685–2 691. (WU Xuping，YANG Xin¢an，LI Yacui et al. Research on control indices and deformation characteristic of shallow tunnel with weak interlayer[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(Supp.1)：2 685–2 691.(in Chinese))

[3] BRUNEAU G，TYLER D B，HADJIGEORGIOU J，et al. Influence of faulting on a mine shaft—a case study：part I—background and instrumentation[J]. International Journal of Rock Mechanics and Mining Sciences，2003，40(1)：95–111.

[4] 刘辉，张智超. 2004–2008我国隧道施工事故统计分析[J]. 中国安全科学学报，2010，20(1)：96–100.(LIU Hui，ZHANG Zhichao. Statistical analysis on safety accidents of tunnel construction from 2004 to 2008 in China[J]. China Safety Science Journal，2010，20(1)：96–100.(in Chinese))

[5] 白浪峰，徐前卫，田龙岗，等. 软弱破碎连拱隧道松动区模型试验与分析[J]. 岩石力学与工程学报，2013，32(增2)：3 610–3 618. (BAI Langfeng，XU Qianwei，TIAN Longgang，et al. Model test and analysis of loose zone in soft and cracked surrounding rock of multi-arch tunnel[J]. Chinese Journal of Rock Mechanics and Engineering，2013，32(Supp.2)：3 610–3 618.(in Chinese)

[6] JEON S，KIM J，SEO Y，et al. Effect of a fault and weak plane on the stability of a tunnel in rock—a scaled model test and numerical analysis[J]. International Journal of Rock Mechanics and Mining Sciences，2004，41(3)：1–6.

[7] FEI W P，ZHANG L，ZHANG R. Experimental study on a geo-mechanical model of a high arch dam[J]. International Journal of Rock Mechanics and Mining Sciences，2010，47(2)：299–306.

[8] 张志强，李宁，陈方方，等. 不同围岩中软弱夹层对洞室围岩稳定性的影响[J]. 西北农林科技大学学报：自然科学版，2011，39(7)：193–200.(ZHANG Zhiqiang，LI Ning，CHEN Fangfang，et al. Effect of weak interbed on tunnel stability in different graded surrounding rock mass[J]. Journal of Northwest A and F University：Natural Science，2011，39(7)：193–200.(in Chinese))

[9] 郑颖人，王永甫，王成. 节理岩体隧道的稳定分析与破坏规律探讨[J]. 地下空间与工程学报，2011，7(4)：649–656.(ZHENG Yingren，WANG Yongfu，WANG Cheng. Stability analysis and exploration of failure law of jointed rock tunnel[J]. Chinese Journal of Underground Space and Engineering，2011，7(4)：649–656.(in Chinese))

[10] JING L. Formulation of discontinuous deformation analysis (DDA)—an implicit discrete element model for block system[J]. Engineering Geology，1998，49(3/4)，371–381.

[11] HUANG F，ZHU H H，XU Q W，et al. The effect of weak interlayer on the failure pattern of rock mass around tunnel—scaled model tests and numerical analysis[J]. Tunnelling and Underground Space Technology，2013，35(4)：207–218.

[12] 古银城，李文华，李昊. 断层与隧道相对距离对围岩稳定性影响的试验研究[J]. 现代隧道技术，2013，50(3)：59–65.(GU Yincheng，LI Wenhua，LI Hao. Experimental study on the relative distance between a tunnel and a fault and subsequent effects on the stability of the surrounding rock[J]. Modern Tunnelling Technology，2013，50(3)：59–65.(in Chinese))

[13] 李文华，李昊，古银城，等. 断层对隧道围岩稳定性影响的有限元分析[J]. 施工技术，2013，42(7)：93–110.(LI Wenhua，LI Hao，GU Yincheng，et al. Finite element analysis on the influence of fault to the stability of surrounding rock[J]. Construction Technology，2013，42(7)：93–110.(in Chinese))

[14] 董方庭，宋宏伟，郭志宏，等. 巷道围岩松动圈支护理论[J]. 煤炭学报，1994，19(1)：21–31.(DONG Fangting，SONG Hongwei，GUO Zhihong，et al. Roadway support theory based on broken rock zone[J]. Journal of China Coal Society，1994，19(1)：21–31.(in Chinese))

[15] MEGUID M A，SAADA O，NUNES M A，et al. Physical modeling of tunnels in soft ground：A review[J]. Tunnelling and Underground Space Technology，2008，23(2)，185–198.

[16] SITHARAM T G，SRIDEVI J，SHIMIZU N. Practical equivalent continuum characterization of jointed rock masses[J]. International Journal of Rock Mechanics and Mining Sciences，2001，38(3)：437–448.

[17] ZHANG G Q. Rock failure with weak planes by self-locking concept[J]. International Journal of Rock Mechanics and Mining Sciences，2009，46(6)，974–982.

[18] 朱合华，黄锋，徐前卫. 变埋深下软弱破碎隧道围岩渐进性破坏试验与数值模拟[J]. 岩石力学与工程学报，2010，29(6)：1 113– 1 122.(ZHU Hehua，HUANG Feng，XU Qianwei. Model test and numerical simulation for progressive failure of weak and fractured tunnel surrounding rock under different overburden depths[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(6)：1 113– 1 122.(in Chinese))

[19] AYDAN Ö，AKAGI T，KAWAMOTO T. The squeezing potential of rocks around tunnels theory and prediction[J]. Rock Mechanics and Rock Engineering，1993，26(2)：137–163.

[20] 邹红英，肖明. 地下洞室开挖松动圈评估方法研究[J]. 岩石力学与工程学报，2010，29(3)：513–519.(ZOU Hongying，XIAO Ming. Study of methodology for assessment of excavation disturbed zone of underground caverns[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(3)：513–519.(in Chinese))

[21] HUANG Z P，BROCH E，LU M. Cavern roof stability mechanism of arching and stabilization by rock bolting[J]. Tunneling and Underground Space Technology，2002，17(3)，249–261.

[22]