埋深对软弱隧道围岩破坏影响机制试验研究

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (336 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要通过室内模型试验，研究公路隧道IV，V级围岩在不同埋深条件下全断面开挖时的围岩破坏情况，实现自重应力场作用下毛洞状态时隧道围岩破坏过程的试验模拟，得到拱形塌方和塌穿型塌方2种围岩破坏模式。试验结果表明：隧道围岩的破坏从拱顶开始，并逐渐向上发展；埋深越小，隧道越易发生塌穿型塌方，而当埋深小于某一值时，因隧道开挖后围岩应力未超过围岩强度，隧道反而能保持稳定状态；对塌穿型塌方，隧道埋深越大，开挖后围岩维持稳定时间越短，塌方程度越严重，塌方向地表发展得越快；对同一类型的塌方，隧道埋深越大，塌方后隧道周边应力变化幅度越大。

	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

关键词 ：隧道工程, 公路隧道, 埋深, 围岩破坏, 模型试验

Abstract：The failure conditions of grades IV and V surrounding rocks in highway tunnel under different buried depths are studied through a number of model tests. The test simulation of failure process of non-supported tunnel under gravitational stress is carried out successfully；and two failure modes of arch collapse and caving collapse are obtained. The test results show that the failure of surrounding rock initiates from arch crown of tunnel and develops upward progressively. The smaller the buried depth is，the more likely the caving collapse occurs. When the buried depth is less than a certain value，the tunnel can maintain stability because the stress of surrounding rock induced by excavation does not exceed the strength of surrounding rock. For the caving collapse，the larger the buried depth is，the shorter the time of surrounding rock¢s stability is，the more serious the collapse degree is，and also the faster the collapse developing to ground surface is. For the same collapse type，the larger the buried depth is，the larger the changing amplitude of the stress of surrounding rock is.

Key words： tunnelling engineering highway tunnel buried depth failure of surrounding rock model test

收稿日期: 2010-05-10

引用本文:

汪成兵1，朱合华2，3. 埋深对软弱隧道围岩破坏影响机制试验研究[J]. 岩石力学与工程学报, 2010, 29(12): 2442-2448.
WANG Chengbing1，ZHU Hehua2，3. EXPERIMENTAL STUDY OF INFLUENCE MECHANISM OF BURIED DEPTH ON SURROUNDING ROCK FAILURE OF TUNNEL CONSTRUCTED IN SOFT ROCK. , 2010, 29(12): 2442-2448.

链接本文:

http://www.rockmech.org/CN/Y2010/V29/I12/2442

[1]	苏生瑞. 复杂地质条件下高速公路隧道施工问题[R]. 上海：同济大学，2003.(SU Shengrui. Studies of problems in construction of expressway tunnel under complex geological conditions[R]. Shanghai：Tongji University，2003.(in Chinese)) " target="_blank">
[2]	徐学深，王俊强. 公路浅埋土质隧道塌方后的技术处理措施[J]. 现代隧道技术，2002，39(3)：57-62.(XU Xueshen，WANG Junqiang. Technical treatment for collapse in shallow-buried soil highway tunnel[J]. Modern Tunnelling Technology，2002，39(3)：57-62.(in Chinese))
[4]	李代国. 成渝高等级公路缙云山隧道坍方浅析[J]. 科学技术通讯，1995，(4)：9-12.(LI Daiguo. Analysis of the collapse of Jinyunshan tunnel on Chengdu—Chongqing road[J]. Communication of Science and Technology，1995，(4)：9-12.(in Chinese))
[5]	汪成兵，朱合华. 隧道塌方机制及其影响因素离散元模拟[J]. 岩土工程学报，2008，30(3)：450-456.(WANG Chengbing，ZHU Hehua. Tunnel collapse mechanism and numerical analysis of its influencing factors[J]. Chinese Journal of Geotechnical Engineering，2008，30(3)：450-456.(in Chinese))
[3]	李志厚，杨晓华，来弘鹏，等. 公路隧道特大塌方成因分析及综合处治方法研究[J]. 工程地质学报，2008，16(6)：806-812.(LI Zhihou，YANG Xiaohua，LAI Hongpeng，et al. A case study on the cause and treatment of huge collapse of highway tunnel during construction[J]. Journal of Engineering Geology，2008，16(6)：806-812.(in Chinese))
[6]	中华人民共和国行业标准编写组. JTG D70-2004公路隧道设计规范[S]. 北京：人民交通出版社，2004.(The Professional Standars Complilation Group of People¢s Republic of China. JTG D70-2004 Code for design of road tunnel[S]. Beijing：China Communications Press，2004.(in Chinese)) " target="_blank">
[7]	ZHU W C，LIU J，Tang C A，et al. Simulation of progressive fracturing processes around underground excavations under biaxial compression[J]. Tunnelling and Underground Space Technology，2005， 20(3)：231-247 " target="_blank">
[8]	FUNATSU T，HOSHINO T，ISHIKAWA M，et al. Numerical analysis for better understanding mechanism of support effect on ground stability by using distinct element method[C/CD]// ISRM International Symposium 2006，4th Asian Rock Mechanics Symposium. Singapore：[s. n.]，2006. " target="_blank">
[11]	杨令强，张社荣. 构造应力与导流洞围岩的破坏分析[J]. 岩土工程学报，2008，30(6)：813-817.(YANG Lingqiang，ZHANG Sherong. Analysis of textural stress and rock failure of diversion tunnels[J]. Chinese Journal of Geotechnical Engineering，2008，30(6)：813-817. (in Chinese))
[14]	王明年，关宝树，何川. 三车道公路隧道在不同构造应力作用下的力学行为研究[J]. 岩土工程学报，1998，20(1)：51-55.(WANG Mingnian，GUAN Baoshu，HE Chuan. Study on mechanical behaviour of three-lane road tunnel under tectonic stresses[J]. Chinese Journal of Geotechnical Engineering，1998，20(1)：51-55.(in Chinese))
[15]	STERPI D，CIVIDINI A. A physical and numerical investigation on the stability of shallow tunnels in strain softening media[J]. Rock Mechanics and Rock Engineering，2004，37(4)：277-298.
[17]	汪成兵，朱合华. 隧道塌方影响因素离散元模拟[J]. 地下空间与工程学报，2007，3(6)：1 490-1 495.(WANG Chengbing，ZHU Hehua. Study on the influencing factors of tunnel cave-in by the discrete element method[J]. Chinese Journal of Underground Space and Engineering，2007，3(6)：1 490-1 495.(in Chinese)) " target="_blank">
[9]	WANG C，TANNANT D D. Rock fracture around a highly stressed tunnel and the impact of a thin tunnel liner for ground control[J]. International Journal of Rock Mechanics and Mining Sciences，2004，41(3)：1-8. " target="_blank">
[10]	刘刚，赵坚，宋宏伟，等. 节理密度对围岩变形及破坏影响的试验研究[J]. 岩土工程学报，2007，29(11)：1 737-1 741.(LIU Gang，ZHAO Jian，SONG Hongwei，et al. Physical modeling of effect of joint density on deformation and failure of surrounding rocks[J]. Chinese Journal of Geotechnical Engineering，2007，29(11)：1 737- 1 741.(in Chinese))
[12]	张玉军，刘谊平. 地下洞室埋深对围岩双重非线性影响的有限元分析[J]. 岩土力学，2003，24(1)：127-129.(ZHANG Yujun，LIU Yiping. Finite element analyses for influence of embedded depth of an underground opening on double-nonlinearity of surrounding rockmass[J]. Rock and Soil Mechanics，2003，24(1)：127-129.(in Chinese))
[13]	王贵君. 节理裂隙岩体中不同埋深无支护暗挖隧洞稳定性的离散元数值分析[J]. 岩石力学与工程学报，2004，23(7)：1 154-1 157. (WANG Guijun. DEM analysis of stability of unsupported tunnels in jointed rock masses at different depths[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(7)：1 154-1 157.(in Chinese)) " target="_blank">
[16]	梁晓丹，刘刚，赵坚. 地下工程压力拱拱体的确定与成拱分析[J]. 河海大学学报(自然科学版)，2005，33(3)：314-317.(LIANG Xiaodan，LIU Gang，ZHAO Jian. Definition and analysis of arching action in underground rock engineering[J]. Journal of Hohai University (Natural Science)，2005，33(3)：314-317.(in Chinese)) " target="_blank">