挤压性破碎软岩隧道大变形特征及机制研究

doi:10.13722/j.cnki.jrme.2017.0050

摘要
图/表
参考文献(24)
相关文章 (15)

全文: PDF (920 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要

在高地应力软岩地层中开挖隧道，易引发挤压性大变形，是隧道建设中的主要难题之一。依托成(成都)兰(兰州)铁路茂县隧道，通过岩石试验和现场测试，分析茂县隧道的变形特征及破坏模式，研究挤压性软岩大变形隧道的变形和支护作用机制。研究结果表明：高地应力软岩隧道施工期间围岩变形量大、速率快，围岩的挤压流动现象明显，变形持续时间长；围岩松动圈层数多、范围广，拱部锚杆受压，与围岩形成“压缩带”，共同承载；支护结构承受较大的围岩形变压力，初支钢架多为“屈服承载”或破坏，破坏形式多样，但位置集中；围岩以剪切破坏为主，裂隙扩容现象明显，注浆对加固围岩及保持锚杆作用效果显著；多层支护可有控制的释放围岩变形，改善结构受力，降低围岩流变特性的影响。

	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
	李磊1
	2
	谭忠盛1
	2

关键词 ：隧道工程, 挤压性软岩, 隧道大变形, 现场监测, 支护结构

Abstract：

The excavation of tunnels in the soft rock stratum with high geo-stress is easy to cause large squeezing deformation，which is one of the main problems in tunnel construction. This article relies on Maoxian tunnel of Chengdu-Lanzhou Railway to analyse the deformation characteristics and failure modes of Maoxian tunnel，and the deformation and supporting mechanism of large deformation tunnel in squeezing-shattered soft rock was researched. The results show that，during the construction of high geo-stress soft rock tunnel，the magnitude and velocity of deformation might maintain a high level for several days，and the extrusion flow of the surrounding rock was obvious. The loosening circle of surrounding rock had a large radius and appeared to be multi-layered. The bolts in vault area were under pressure. Thus，the bolts and the rock mass turned into a compressing zone together，bore the load jointly. The support structure was under considerable deformation pressure. The steel girders were mostly working at yield state or became failure in various forms，but the failure point was concentrated at some specific locations. As for the rock mass，the shear failure took the main part，and the expansion of joints was obvious. Grouting took a remarkable effect in strengthening the surrounding rock and maintaining the anchor effect. Multi-layer support could release the deformation potential of the surrounding rock gradually，improve the bearing performance of the structure，and reduce the impact of rheological behavior.

Key words： tunneling engineering squeezing soft-rock serious deformation of tunnel in-situ monitoring supporting structure

引用本文:

李磊1，2，谭忠盛1，2. 挤压性破碎软岩隧道大变形特征及机制研究[J]. 岩石力学与工程学报, 2018, 37(S1): 3593-3603.
LI Lei1，2，TAN Zhongsheng1，2. Characteristic and mechanism research for large deformation problem in squeezing-shattered soft rock tunnel. , 2018, 37(S1): 3593-3603.

链接本文:

https://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2017.0050 或 https://rockmech.whrsm.ac.cn/CN/Y2018/V37/IS1/3593

[1]	刘招伟，王明胜，方俊波.高地应力大变形隧道支护系统的试验研究[J].土木工程学报，2010，43(5)：111-116.(LIU Zhaowei，WANGMingsheng，FANGJunbo. In-situ study of reinforcement systems for tunnels under high geo-stress and large deformation[J].ChinaCivilEngineeringJournal，2010，43(5)：111-116.(in Chinese))
[2]	郭啟良，伍法权，钱卫平，等.乌鞘岭长大深埋隧道围岩变形与地应力关系的研究[J].岩石力学与工程学报，2006，25(11)：2 194-2199. (GUO Qiliang，WU Faquan，QIAN Weiping，et al.Study on relationship between deformation of surrounding rock and in-situ stress in Wushaoling deep-buried railway tunnel[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(11)：2 194-2199.(in Chinese))
[3]	雷军，张金柱，林传年.乌鞘岭特长隧道复杂地质条件下断层带应力及变形现场监测分析[J].岩土力学，2008，29(5)：1367-1371. (LEIJun，ZHANG Jinzhu，LIN Chuannian.Analysis of stress and deformation site-monitoring in fault zone of Wushaoling tunnel under complex geological conditions[J]. Rock and Mechanics，2008，29(5)：1367-1371.(in Chinese))
[4]	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)：531-537.(WANFei，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)：531-537.(in Chinese))
[5]	张志强，关宝树. 软弱围岩隧道在高地应力条件下的变形规律研究[J]. 岩土工程学报，2000，22(6)：696-700.(ZHANGZhiqiang，GUANBaoshu. Research on the deformation rule of weak rock mass tunnel under high initial geostress[J]. Chinese Journal of GeotechnicalEngineering，2000，22(6)：696-700.(in Chinese))
[6]	叶圣教.辛普伦铁路隧道的施工和回顾[C] //铁路工程建设科技动态报告文集——铁路隧道及地下工程.成都：西南交通大学出版社，1995：120-134.(YE Shengjiao.Review of Simplon Railway Tunnel Construction[C]// Scientific and Technological Dynamic Report on Railway Engineering Construction. Chengdu：Southwest Jiaotong University Press，1995：120-134.(in Chinese))
[7]	GOEL R K，JETHWA J L，PAITHANKAR A G.Tunnelling through the young himalayas-a case history of the maneri-uttarkashi power tunnel[J].Engineering Geology，1995，39(5)：31-34.
[8]	MICHELSON A A.The laws of elastico-viscous flow[J].The Journal of Geology，1917，25(5)：319-323.
[9]	GRIGGS D.Creep of rocks[J].The Journal of Geology，1939，47(3)：225-251.
[10]	熊谷直一，笹嶋貞雄，伊藤英文.岩石の長年クリープ実験(巨大試片約20年間?小試片約3年間の結果)[J].材料，1978，27(293)：155-161.
[11]	陈宗基.地下巷道长期稳定性的力学问题[J].岩石力学与工程学报，1982，1(1)：1-20.(TAN Tjongkie.The mechanical problems for the long-term stability of underground galleries[J]. Chinese Journal of Rock Mechanics and Engineering，1982，1(1)：1-20.(in Chinese))
[12]	郭志.临界等速流变剪应力的确定方法[J].勘察科学技术，1994，12(4)：24-26.(GUO Zhi.Method of determination of the critical uniform rheological shear stress[J].Site Investigation Science and Technology，1994，12(4)：24-26.(in Chinese))
[13]	陈有亮，孙钧. 岩石的流变断裂特性[J]. 岩石力学与工程学报，1996，15(4)：323-327.(CHEN Youliang，SUN Jun. Creep fracture of rock[J]. Chinese Journal of Rock Mechanics and Engineering，1996，15(4)：323-327.(in Chinese))
[14]	陈有亮，孙钧. 岩石的蠕变断裂特性分析[J].同济大学学报，1996，24(5)：504-508.(CHEN Youliang，SUN Jun. Characters of Rheological Fracture of Rock[J]. Journal of Tongji University，1996，24(5)：504-508.(in Chinese))
[15]	丁秀丽，刘建，刘雄贞. 三峡船闸区硬性结构面蠕变特性试验研究[J]. 长江科学院院报，2000，17(4)：30-33.(DING Xiuli，LIU Jian，LIU Xiongzhen. Experimental Study on creep behaviors of hard structural plane in TGP¢s permanent lock regions[J]. Journal of Yangtze River Scientific Research Institute，2000，17(4)：30-33.(in Chinese))
[16]	郑颖人，朱合华，方正昌，等.地下工程围岩稳定分析与设计理论[M].北京：人民交通出版社，2012：367-372.(ZHENG Yingren，ZHU Hehua，FANG Zhengchang，et al.The stability analysis and design theory of surrounding rock of underground engineering[M].Beijing：China Communications Press，2012：367-372.(in Chinese))
[17]	谷兆祺，彭守拙，李仲奎.地下洞室工程[M].北京：清华大学出版社，1994：16-18.(GU Zhaoqi，PENG Shouzhuo，LI Zhongkui.Underground excavation engineering[M].Beijing：Tsinghua UniversityPress，1994：16-18.(in Chinese))
[18]	M. 鲍莱茨基，M.胡戴克.矿山岩体力学[M]. 于振海，刘天泉，译.北京：煤炭工业出版社，1985：29-38.(BORECKI M，CHUDEK M.Mechanika Gorotworu[M].Translated by YU Zhenhai，LIU Tianquan. Beijing：China Coal Industry Publishing House，1985：29-38.(in Chinese))
[19]	中华人民共和国行业标准编写组. JTG/TD70—2010公路隧道设计细则[S]. 北京：人民交通出版社，2010.(The Professional Standards compilation of the people¢s republic of china. jtg/t d70—2010 guidelines for design of highway tunnel[S].Beijing：China Communications Press，2010.(in Chinese))
[20]	中华人民共和国行业标准编写组. TB 10003—2005 铁路隧道设计规范[S]. 北京：中国铁道出版社，2005.(The Professional Standards Compilationof the People′s Republic of China.TB 10003—2005 Code for design on tunnel of railway[M].Beijing：China Railway Publishing House，2005.(in Chinese))
[21]	张传庆，冯夏庭，周辉，等.隧洞围岩收敛损失位移的求取方法及应用[J].岩土力学，2009，30(4)：997-1 012.(ZHANGChuanqing，FENG Xiating，ZHOU Hui，et al.Method of obtaining loss convergence displacement and its application to tunnel engineering[J]. Rock andSoil Mechanics，2009，30(4)：997-1 012.(in Chinese))
[22]	张研，苏国韶，燕柳斌.隧洞围岩损失位移估计的智能优化反分析[J].岩土力学，2013，34(5)：1384-1 390.(ZHANG Yan，SU Guoshao，YAN Liubin.An intelligent optimization method of back analysis for loss displacement of surrounding rocks of tunnel[J]. Rock andSoil Mechanics，2013，34(5)：1384-1 390.(in Chinese))
[23]	HOEK E. Big tunnels in bad rock[J]. Journal of Geotechnical and Geoenvironmental Engineering，ASCE，2001，129(9)：726-740.
[24]	AYDANÖ，AKAGI T，KAWAMOTO T. The squeezing potential of rock around tunnels：theory and prediction with examples taken from Japan[J]. Rock Mechanics and Rock Engineering，1996，29(3)：125-143.