TBM掘进中软岩地质变形预测及控制分析
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摘要
依托某在建隧道工程,从弹塑性理论探讨了软岩地质条件下TBM掘进过程中围岩发生流塑性临界深度和洞周极限位移的关系。结果表明:TBM掘进过程中发生流塑性临界深度与围岩强度近似呈正比例关系,隧道在其软岩段和特定埋深情况下均会发生流塑性弱化;塑性半径随埋围岩深增大先增大后趋于稳定、允许极限位移与埋深呈近似线性关系,当TBM掘进机在埋深超过400 m软弱地层中掘进时,其TBM扩挖能力不足抵抗围岩弱化溃缩的位移量。
引文
[1]刘泉声,黄兴,时凯,等.煤矿超千米深部全断面岩石巷道掘进机的提出及关键岩石力学问题[J].煤炭学报,2012,37(12):2006-2013.
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[6] HOEK E,BROWN E T. Practical estimate of rock mass strength[J]. International journal of rock mechanics and mining sciences,1997,34(8):1165-1186.
[7] FARROKH E,MORTAZAVI A,SHAMSI G. Evaluation of ground convergence and squeezing potential in the TBM driven ghomroud tunnel project[J]. Tunnelling and underground space technology,2006,21(5):504-510.
[8] RAMONI M,ANAGNOSTOU G. The interaction between shield,ground and tunnel support in TBM tunnelling through squeezing ground[J]. International journal of rock mechanics and mining sciences,2011(44):37-61.
[9] FARROKH E,MORTAZAVI A,SHAMSI G. Evaluation of ground convergence and squeezing potential in the TBM driven Ghomroud tunnel project[J]. Tunnelling and underground space technology,2006,21(5):504-510.
[10]温森,杨圣奇,董正方,等.深埋隧道TBM卡机机理及控制措施研究[J].岩土工程学报,2015,37(7):1271-1277.
[2]刘泉声,黄兴,时凯,等.超千米深部全断面岩石掘进机卡机机制[J].煤炭学报,2013,38(1):78-84.
[3]刘波.全断面双护盾掘进机在引黄工程断层破碎带的卡机处理[J].山西水利科技,2007(2):13-15.
[4]宋天田,肖正学,苏华友,等.上公山TBM施工2.22卡机事故工程地质分析[J].岩石力学与工程学报,2004,23(Sup1):4544-4546.
[5]尚彦军,史永跃,曾庆利,等.昆明上公山隧道复杂地质条件下TBM卡机及护盾变形问题分析和对策[J].岩石力学与工程学报,2005,24(1):3858-3863.
[6] HOEK E,BROWN E T. Practical estimate of rock mass strength[J]. International journal of rock mechanics and mining sciences,1997,34(8):1165-1186.
[7] FARROKH E,MORTAZAVI A,SHAMSI G. Evaluation of ground convergence and squeezing potential in the TBM driven ghomroud tunnel project[J]. Tunnelling and underground space technology,2006,21(5):504-510.
[8] RAMONI M,ANAGNOSTOU G. The interaction between shield,ground and tunnel support in TBM tunnelling through squeezing ground[J]. International journal of rock mechanics and mining sciences,2011(44):37-61.
[9] FARROKH E,MORTAZAVI A,SHAMSI G. Evaluation of ground convergence and squeezing potential in the TBM driven Ghomroud tunnel project[J]. Tunnelling and underground space technology,2006,21(5):504-510.
[10]温森,杨圣奇,董正方,等.深埋隧道TBM卡机机理及控制措施研究[J].岩土工程学报,2015,37(7):1271-1277.