豆砾石回填降低双护盾隧道掘进机卡机风险的效用影响分析
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摘要
双护盾隧道掘进机(TBM)掘进豆砾石回填速度对于围岩支护效果具有一定影响。以西藏某公路隧道护盾卡机段为研究对象,构建了双护盾TBM掘进过程数值模拟分析模型,以回填物强度变化直接反映回填时间同时考虑回填段长度变化,研究豆砾石回填对围岩屈服、收敛变形、护盾接触面积、设备推进所需克服摩阻力等影响规律,进而研究豆砾石回填工序对于降低双护盾TBM卡机风险的减灾作用。结果表明:豆砾石快速回填不会改变围岩收敛变形宏观分布特征,对围岩塑形屈服区的总体分布、屈服类型及体积具有一定影响;豆砾石快速回填可以控制围岩收敛变形,减小围岩与护盾接触面积,进而降低TBM推进所需克服护盾摩阻力,对降低卡机风险对具有一定效果,但对于挤压变形较大洞段,需要与其他主动防控措施相结合采用,研究结果可为相类似工程进行双护盾TBM卡机风险防控措施选择提供参考。
The speed of pea gravel backfill has some impact on the support effect of the surrounding rock in the double-shield tunnel boring machine( TBM) tunneling. Taking the shielding type machine entrapment section of a highway tunnel in Tibet as the research object and the numerical simulation analysis model for the double shield TBM excavation process were constructed,directly reflecting the backfill time with the change in backfill strength,considering the change of the length of the backfill section,studying the influence law of the pea gravel backfill on the yield of surrounding rock,convergence deformation,contact area of the shield,and the friction resistance required for the equipment advancement. Further the study on the disaster reduction function of pea gravel backfill process on reducing the risk of double shield TBM machine entrapment were made. The results show that the pea gravel rapid backfill does not change the macroscopic distribution characteristics of convergence deformation of the surrounding rock,and has some influence on the general distribution of surrounding rock plastic yielding zone,yield type and volume of the surrounding rock plastic yielding zone. The pea gravel rapid backfill can control convergence deformation of the surrounding rock and decrease the contact area between surrounding rock and shield,and reduce the friction resistance of shield that TBM propulsion needs to overcome,thus reducing the risk of machine entrapment. But for the large squeezing deformation section of the tunnel,it needs to be combined with other active prevention and control measures to use. The research results can provide a reference for similar projects on the selection of risk prevention and control measures of double shield TBM shielding type machine entrapment.
The speed of pea gravel backfill has some impact on the support effect of the surrounding rock in the double-shield tunnel boring machine( TBM) tunneling. Taking the shielding type machine entrapment section of a highway tunnel in Tibet as the research object and the numerical simulation analysis model for the double shield TBM excavation process were constructed,directly reflecting the backfill time with the change in backfill strength,considering the change of the length of the backfill section,studying the influence law of the pea gravel backfill on the yield of surrounding rock,convergence deformation,contact area of the shield,and the friction resistance required for the equipment advancement. Further the study on the disaster reduction function of pea gravel backfill process on reducing the risk of double shield TBM machine entrapment were made. The results show that the pea gravel rapid backfill does not change the macroscopic distribution characteristics of convergence deformation of the surrounding rock,and has some influence on the general distribution of surrounding rock plastic yielding zone,yield type and volume of the surrounding rock plastic yielding zone. The pea gravel rapid backfill can control convergence deformation of the surrounding rock and decrease the contact area between surrounding rock and shield,and reduce the friction resistance of shield that TBM propulsion needs to overcome,thus reducing the risk of machine entrapment. But for the large squeezing deformation section of the tunnel,it needs to be combined with other active prevention and control measures to use. The research results can provide a reference for similar projects on the selection of risk prevention and control measures of double shield TBM shielding type machine entrapment.
引文
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2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):2006-2013Liu Quansheng,Huang Xing,Shi Kai,et al.Utilization of full face roadway boring machine in coal mines deeper than 1 000 m and the key rock mechanics problems[J].Journal of China Coal Society,2012,37(12):2006-2013
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4王焕明,陈方明.复杂地质区TBM卡机成因分析及脱困技术[J].人民长江,2014,45(3):66-69Wang Huanming,Chen Fangming.Cause analysis on TBM jam accident in adverse geological strata and jam-removing techniques[J].Yangtze River,2014,45(3):66-69
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(21):3858-3863Shang Yanjun,Shi Yongyue,Zeng Qingli,et al.TBM jamming and deformation in complicated geological conditions and engineering measures[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(21):3858-3863
6黄兴,刘泉声,彭星新,等.引大济湟工程TBM挤压大变形卡机计算分析与综合防控[J].岩土力学,2017,38(10):2962-2972Huang Xing,Liu Quansheng,Peng Xingxin,et al.Analysis and comprehensive prevention-control for TBM jamming induced by squeezing deformation of surrounding rock around water diversion tunnel from Datong River into Huangshui River[J].Rock and Soil Mechanics,2017,38(10):2962-2972
7尹俊涛,尚彦军,史永跃,等.掌鸠河引水供水工程TBM施工段相关工程地质问题探讨[J].现代隧道技术,2005,42(3):49-53Yin Juntao,Shang Yanjun,Shi Yongyue,et al.Discussion on some problems concerning engineering geology in the TBM excavation of Zhangjiuhe River water diversion and supply project[J].Modern Tunnelling Technology,2005,42(3):49-53
8尚彦军,杨志法,曾庆利,等.TBM施工遇险工程地质问题分析和失误的反思[J].岩石力学与工程学报,2007,26(12):2404-2411Shang Yanjun,Yang Zhifa,Zeng Qingli,et al.Retrospective analysis of TBM accidents from its poorflexibility to complicated geological conditions[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(12):2404-2411
9 Ramoni M,Anagnostou G.The interaction between shield,ground and tunnel support in TBM tunnelling through squeezing ground[J].Rock Mechanics&Rock Engineering,2011,44(1):37-61
10 Ramoni M,Anagnostou G.The effect of consolidation on TBMshield loading in water-bearing squeezing ground[J].Rock Mechanics&Rock Engineering,2011,44(1):63-83
11 Ramoni M,Anagnostou G.Tunnel boring machines under squeezing conditions[J].Tunnelling&Underground Space Technology Incorporating Trenchless Technology Research,2010,25(2):139-157
12 Hasanpour R,Rostami J,nver B.3D finite difference model for simulation of double shield TBM tunneling in squeezing grounds[J].Tunnelling&Underground Space Technology Incorporating Trenchless Technology Research,2014,40(2):109-126
13程建龙,杨圣奇,李学华,等.挤压地层双护盾TBM与围岩相互作用影响因素分析[J].采矿与安全工程学报,2016,33(4):713-720Chen Jianlong,Yang Shengqi,Li Xuehua,et al.Analysis of influencing factors of interaction between double-shield TBM and surrounding rock in squeezing ground[J].Journal of Mining&Safety Engineering,2016,33(4):713-720
14程建龙,杨圣奇,杜立坤,等.复合地层中双护盾TBM与围岩相互作用机制三维数值模拟研究[J].岩石力学与工程学报,2016,35(3):511-523Cheng Jianlong,Yang Shengqi,Du Likun,et al.Three-dimensional numerical simulation on interaction between double-shield TBM and surrounding rock mass in composite ground[J].Chinese Journal of Rock Mechanics and Engineering,2016,35(3):511-523
15刘泉声,黄兴,时凯,等.深部挤压性地层TBM掘进卡机孕育致灾机理[J].煤炭学报,2014,39(增刊1):75-82Liu Quansheng,Huang Xing,Shi Kai,et al.The mechanism of TBMshield jamming disaster tunnelling through deep squeezing ground[J].Journal of China Coal Society,2014,39(S1):75-82
16郭惠川.豆砾石回填灌浆工艺在复合式TBM施工中的应用[J].国防交通工程与技术,2013,11(4):52-54Guo Huichuan.The application of pea-sized gravel backfilling and grouting technique to the construction of the composite TBM[J].Traffic Engineering and Technology for National Defense,2013,11(4):52-54
17马骋.达坂隧洞TBM脱困处理措施[J].东北水利水电,2014,32(11):21-23Ma Cheng.Jam releasing technologies for TBM used in Daban Tunnel[J].Water Resources&Hydropower of Northeast China,2014,32(11):21-23
2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):2006-2013Liu Quansheng,Huang Xing,Shi Kai,et al.Utilization of full face roadway boring machine in coal mines deeper than 1 000 m and the key rock mechanics problems[J].Journal of China Coal Society,2012,37(12):2006-2013
3王彬.莱索托水利工程中隧洞掘进机的使用情况[J].隧道译丛,1994(3):28-39Wang Bin.Application of tunnel boring machine in Lesotho water conservancy project[J].Tunnel Translation,1994(3):28-39
4王焕明,陈方明.复杂地质区TBM卡机成因分析及脱困技术[J].人民长江,2014,45(3):66-69Wang Huanming,Chen Fangming.Cause analysis on TBM jam accident in adverse geological strata and jam-removing techniques[J].Yangtze River,2014,45(3):66-69
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(21):3858-3863Shang Yanjun,Shi Yongyue,Zeng Qingli,et al.TBM jamming and deformation in complicated geological conditions and engineering measures[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(21):3858-3863
6黄兴,刘泉声,彭星新,等.引大济湟工程TBM挤压大变形卡机计算分析与综合防控[J].岩土力学,2017,38(10):2962-2972Huang Xing,Liu Quansheng,Peng Xingxin,et al.Analysis and comprehensive prevention-control for TBM jamming induced by squeezing deformation of surrounding rock around water diversion tunnel from Datong River into Huangshui River[J].Rock and Soil Mechanics,2017,38(10):2962-2972
7尹俊涛,尚彦军,史永跃,等.掌鸠河引水供水工程TBM施工段相关工程地质问题探讨[J].现代隧道技术,2005,42(3):49-53Yin Juntao,Shang Yanjun,Shi Yongyue,et al.Discussion on some problems concerning engineering geology in the TBM excavation of Zhangjiuhe River water diversion and supply project[J].Modern Tunnelling Technology,2005,42(3):49-53
8尚彦军,杨志法,曾庆利,等.TBM施工遇险工程地质问题分析和失误的反思[J].岩石力学与工程学报,2007,26(12):2404-2411Shang Yanjun,Yang Zhifa,Zeng Qingli,et al.Retrospective analysis of TBM accidents from its poorflexibility to complicated geological conditions[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(12):2404-2411
9 Ramoni M,Anagnostou G.The interaction between shield,ground and tunnel support in TBM tunnelling through squeezing ground[J].Rock Mechanics&Rock Engineering,2011,44(1):37-61
10 Ramoni M,Anagnostou G.The effect of consolidation on TBMshield loading in water-bearing squeezing ground[J].Rock Mechanics&Rock Engineering,2011,44(1):63-83
11 Ramoni M,Anagnostou G.Tunnel boring machines under squeezing conditions[J].Tunnelling&Underground Space Technology Incorporating Trenchless Technology Research,2010,25(2):139-157
12 Hasanpour R,Rostami J,nver B.3D finite difference model for simulation of double shield TBM tunneling in squeezing grounds[J].Tunnelling&Underground Space Technology Incorporating Trenchless Technology Research,2014,40(2):109-126
13程建龙,杨圣奇,李学华,等.挤压地层双护盾TBM与围岩相互作用影响因素分析[J].采矿与安全工程学报,2016,33(4):713-720Chen Jianlong,Yang Shengqi,Li Xuehua,et al.Analysis of influencing factors of interaction between double-shield TBM and surrounding rock in squeezing ground[J].Journal of Mining&Safety Engineering,2016,33(4):713-720
14程建龙,杨圣奇,杜立坤,等.复合地层中双护盾TBM与围岩相互作用机制三维数值模拟研究[J].岩石力学与工程学报,2016,35(3):511-523Cheng Jianlong,Yang Shengqi,Du Likun,et al.Three-dimensional numerical simulation on interaction between double-shield TBM and surrounding rock mass in composite ground[J].Chinese Journal of Rock Mechanics and Engineering,2016,35(3):511-523
15刘泉声,黄兴,时凯,等.深部挤压性地层TBM掘进卡机孕育致灾机理[J].煤炭学报,2014,39(增刊1):75-82Liu Quansheng,Huang Xing,Shi Kai,et al.The mechanism of TBMshield jamming disaster tunnelling through deep squeezing ground[J].Journal of China Coal Society,2014,39(S1):75-82
16郭惠川.豆砾石回填灌浆工艺在复合式TBM施工中的应用[J].国防交通工程与技术,2013,11(4):52-54Guo Huichuan.The application of pea-sized gravel backfilling and grouting technique to the construction of the composite TBM[J].Traffic Engineering and Technology for National Defense,2013,11(4):52-54
17马骋.达坂隧洞TBM脱困处理措施[J].东北水利水电,2014,32(11):21-23Ma Cheng.Jam releasing technologies for TBM used in Daban Tunnel[J].Water Resources&Hydropower of Northeast China,2014,32(11):21-23