基于声发射试验的TBM隧道施工围岩损伤及应用研究
摘要：高黎贡山隧道作为大瑞铁路关键性控制工程,沿线地质极其复杂,各种地质灾害大大降低了TBM施工效率,为掌握TBM掘进前后隧道周边围岩的损伤演化规律,以提出合理的手段和方法处理TBM施工中遇到的地质灾害,通过提取TBM施工现场声发射试验数据,分析基于掌子面周围围岩的损伤演化规律,提出围岩松动区、损伤区和扰动区划分依据,为获取超前钻孔打设区域、支护锚杆打设深度及高地应力区TBM合理的掘进参数提供科学依据。
关键词：隧道工程隧道掘进机围岩损伤试验声发射
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[15] 徐速超,冯夏庭,陈炳瑞．矽卡岩单轴循环加卸载试验及声发射特性研究[J]．岩土力学,2009,30(10):2929-2934．
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[2] 刘冀山,肖晓春,杨洪杰,等．超长隧洞TBM施工关键技术研究[J]．现代隧道技术,2005,42(4):37-43．
[3] 《中国公路学报》编辑部．中国隧道工程学术研究综述·2015[J]．中国公路学报,2015,28(5):1-65．
[4] 张镜剑,傅冰骏．隧道掘进机在我国应用的进展[J]．岩石力学与工程学报,2007,26(2):226-238．
[5] 赵海雷,陈馈,周建军,等．引松供水4标TBM连续穿越灰岩的施工技术研究[J]．隧道建设,2017,37(3):354-362．
[6] 严鹏,卢文波,陈明,等．深部岩体开挖方式对损伤区影响的试验研究[J]．岩石力学与工程学报,2011,30(6):1097-1106．
[7] TSANG C F,BERNIERB F,DAVIES C.Geohydromechanical processes in the excavation damaged zone in crystalline rock,rock salt,and indurated and plastic clays-in the context of radioactive waste disposal[J].International journal of rock mechanics&mining sciences,2005,42(1):109-125．
[8] 刘泉声,黄兴,刘建平,等．深部复合地层围岩与TBM的相互作用及安全控制[J]．煤炭学报,2015,40(6):1213-1224．
[9] 李邵军,冯夏庭,张春生,等．深埋隧洞TBM开挖损伤区形成与演化过程的数字钻孔摄像观测与分析[J]．岩石力学与工程学报,2010,29(6):1106-1112．
[10] CAI M,KAISER P K,TASAKA Y,et al.Generalized crack initiation and crack damage stress thresholds of brittle rock masses near underground excavations[J].International journal of rock mechanics and mining sciences,2004,41(5)．
[11] CAI M,KAISER P K,MARTIN C D.Quantification of rock mass damage in underground excavations from microseismic event monitoring[J].International journal of rock mechanics and mining sciences,2001,38(8)．
[12] MARTIN C D,READ R S.AECL’s Mine-by experiment:A test tunnel in brittle rock[C]//Proceedings of the Second North American Rock Mech,1996．
[13] 李庶林,尹贤刚,王泳嘉,等．单轴受压岩石破坏全过程声发射特征研究[J]．岩石力学与工程学报,2004,23 (15):2499-2503．
[14] 赵兴东,唐春安,李元辉,等．花岗岩破裂全过程的声发射特性研究[J]．岩石力学与工程学报,2006,25(S2):3673-3678．
[15] 徐速超,冯夏庭,陈炳瑞．矽卡岩单轴循环加卸载试验及声发射特性研究[J]．岩土力学,2009,30(10):2929-2934．
[16] 李占海．深埋隧洞开挖损伤区的演化与形成机制研究[D]．沈阳:东北大学,2013.
Study on Damage and Application of Surrounding Rock in Tunnel Construction by TBM Based on Acoustic Emission Test
Abstract: As a key control project of Dali \ | Ruili Railway,Gaoligongshan Tunnel has extremely complex geology along the line,and various geological disasters greatly reduce the construction efficiency of TBM.In order to grasp the law of damage evolution of surrounding rock around the tunnel before and after TBM excavation,and to propose reasonable methods which reduce geological disasters in TBM construction. By extracting the acoustic emission experimental data of the TBM construction site,the damage evolution law of the surrounding rock around the tunnel face is analyzed,and the basis for the classification of the surrounding rock loose zone,damage zone and disturbance zone is provided. It provides a scientific basis for the firing area of the advance drilling,the firing depth of the supporting bolt,and the reasonable tunneling parameters of the TBM in the high ground stress area.
Keywords: tunnels; tunnel boring machine(TBM); surrounding rock damage; testing; acoustic emission
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