DEFORMATION CHARACTERISTIC ANALYSIS OF TUNNEL SURROUNDING ROCK IN JOINTED MASS
XU Chongbang1，2，3，XIA Caichu2，SONG Erxiang3
(1. Research Institute of Highway Ministry Transport，Beijing 100088，China；2. Department of Geotechnical Engineering，Tongji University，Shanghai 200092，China；3. Department of Civil Engineering，Tsinghua University，Beijing 100084，China)
Abstract：Jinjishan Tunnel is the first multi-arch tunnel with bidirectional eight-lane in China. There were developed joints and crushed rock in tunnel surrounding rock，and the characteristics of joint distribution has significant effect on the stability of tunnel surrounding rock. The data of joints in several cross-sections of mid-drift and other outcrop areas of the tunnel are collected，and joints distribution of the main tunnel by using statistical analysis method is predicted. On the basis of this，simulation calculation for the deformation process of Jingjishan tunnel surrounding rock is made with the self-programmed computation program of analyzing initiation，extending and connecting of rock fractures，and the simulation results show that affections of two joints distribution features on surrounding deformation and the displacement of tunnel surrounding rock be dominated by vertical displacement，and the maximum displacement is at the lateral arch shoulder. The results provide the basis for strengthen and construction methods of tunnel.
[1] 蒋爵光，李巂蓬，钱惠国，等. 不同产状节理岩体隧道围岩稳定性的模型试验研究[J]. 水文地质工程地质，1984，(05)：13–19. (JIANG Jueguang，LI Sonpeng，QIAN Huiguo，et al. Scale model study of stability of tunnels in different occurrence joined rock[J]. Hydrogeology and Engineering Geology，1984，(5)：13–19.(in Chinese))
[2] 宋选民，顾铁凤，柳崇伟. 受贯通裂隙控制岩体巷道稳定性试验研究[J]. 岩石力学与工程学报，2002，21(12)：1 781–1 785.(SONG Xuanmin，GU Tiefeng，LIU Chongwei. Experimental study on roadway stability in rockmass with connected fissures[J]. Chinese Journal of Rock Mechanics and Engineering，2002，21(12)：1 781–1 785.(in Chinese))
[3] 张秀丽，焦玉勇，刘泉声，等. 用改进的DDA方法模拟公路隧道的稳定性[J]. 岩土力学，2007，28(8)：1 710–1 713.(ZHANG Xiuli，JIAO Yuyong，LIU Quansheng et al. Modeling of stability of a highway tunnel by using improved DDA method[J]. Rock and Soil Mechanics，2007，28(8)：1 710–1 713.(in Chinese))
[4] ZHANG X L，JIAO Y Y，ZHAO J. Simulation of failure process of jointed rock[J]. Journal of Central South University of Technology，2008，15(6)：888–894.
[5] 吴顺川，周 喻，高利立，等. 等效岩体技术在岩体工程中的应用[J]. 岩石力学与工程学报，2010，29(7)：1 435–1 441.(WU Shunchuan，ZHOU Yu，GAO Lili，et al. Application of equivalent rock mass technique to rock mass engineering[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(7)：1 435–1 441.(in Chinese))
[6] 刘远明. 基于直剪试验的非贯通节理岩体扩展贯通研究[博士学位论文][D]. 上海：同济大学，2007.(LIU Yuanming. Study on failure models and strength of rockmass containing discontinuous joints in direct shear [Ph.D. Thesis][D]. Shanghai：Tongji University，2007.(in Chinese))
[7] 朱维申，梁作元，冯光北，等. 节理岩体强度特性的物理模拟及其强度预测分析[C]// 葛修润编. 计算机方法在岩石力学及工程中的应用国际学术讨论文集，武汉：武汉测绘科技大学出版社，1994：486–493.(ZHU Weishen，LIANG Zuoyuan，FENG Guangbei，et al. Physical simulation and prediction analysis of the strength characteristics of jointed rockmass[C]// GE Xiurun ed. Proceedings of International Symposium on Computational Methods Applied in Rock Mechanics and Engineering. Wuhan：Wuhan Surveying University Press，1994：486–493.(in Chinese))
[8] 梁作元，朱维申. 压剪应力作用下含共面闭合节理岩石材料的剪切破坏准则探讨[C]// 朱维申编. 中国青年学者岩土工程力学及其应用讨论会议论文集. 北京：科学出版社，1994：470–474.(LIANG Zuoyuan，ZHU Weishen. Study on the failure criterion of rock materials containing coplanar close intermittent joints under compress ion–shear stress[C]// ZHU Weishen ed. Proceedings of Symposium for Chinese Young Scholars on Geotechnical Mechanics and Its Applications. Beijing：Science press，1994：470–474.(in Chinese))
[9] 周小平，王建华，哈秋舲. 压剪应力作用下断续节理岩体的破坏分析[J]. 岩石力学与工程学报，2003，22(9)：1 437–1 440.(ZHOU Xiaoping，WANG Jianhua，HA Qiuling. Failure analysis of intermittent jointed rocks under compression-shear stress[J]. Chinese Journal of Rock Mechanics and Engineering，2003，22(9)：1 437–1 440.(in Chinese))
[10] 黄润秋，许 模，胡卸文，等. 复杂岩体结构精细描述及其工程应用[M]. 北京：科学出版社，2004：70–75.(HUANG Runqiu，XU Mo，HU Xiewen,et al. Complicated rock mass structure elaborate description and its engineering application[M]. Beijing：Science Press，2004：70–75.(in Chinese))
[11] 陈剑平，KULATILAKE P H S W. 岩体结构统计均质区的划分[J]. 地质灾害与环境保护，1996，7(1)：19–24.(CHEN Jianping，KULATILAKE P H S W. Evaluation of statistical homogeneity of rock mass structure[J]. Journal for Geological Hazards and Environment Preservation，1996，7(1)：19–24.(in Chinese))
[12] 董大钧. SAS 统计分析[M]. 沈阳：辽宁科学技术出版社，1996：35–60.(DONG Dajun. SAS statistical analysis[M]. Shenyang：Liaoning Science and Technology Publish House，1996：35–60.(in Chinese))
[13] 夏才初，陈孝湘，许崇帮，等. 特大跨度连拱隧道岩体节理的精细化描述及其块体稳定性分析[J]. 岩石力学与工程学报，2010，29(增1)：2 598–2 603.(XIA Caichu，CHEN Xiaoxiang，XU Chongbang，et al. Fine description of rock joint combined with block theory and its applications in extra-large cross-section multiple-arch tunnel[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(Supp.1)：2 598–2 603.(in Chinese))
[14] STIMPSON B. Failure of slope containing discontinuous planar joints[C]// Proceedings of the 19th U.S Symp. on Rock Mechanics. [S.l.]：[s.n.]，1978：296–300.
[15] KE T C. Simulated testing of two dimensional heterogeneous and discontinuous rock masses using discontinuous deformation analysis [Ph. D. Thesis][D]. Berkeley，USA：University of California，1993.
[16] 夏才初，许崇帮. 非连续变形分析(DDA)中断续节理扩展的模拟方法研究和试验验证[J]. 岩石力学与工程学报，2010，29(10)：2 027–2 032.(XIA Caichu，XU Chongbang. Study of fracturing algorithm of intermittent joint by DDA and experimental validation[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(10)：2 027–2 032.(in Chinese))
[17] XIA C C，XU C B，ZHAO X. Application of strength reduction DDA method in stability analysis of mountain tunnel[C]// Proceedings of the 9th International Conference on Analysis of Discontinuous Deformation. Singapore：[s.n.]，2009：189–203.
[18] 王华牢，许崇帮，夏才初. 断续节理扩展算法在隧道围岩稳定分析中的应用[J]. 岩土工程学报2012，34(2)：349–354.(WANG Hualao，XU Chongbang，XIA Caichu. Study on surrounding rock stability by fracturing algorithm of intermittence jointed[J]. Chinese Journal of Geotechnical Engineering，2012，34(2)：349–354.(in Chinese))
2012, Vol. 31 
