基于现场数据的TBM掘进速率研究
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摘要
为了研究TBM掘进速率在不同地质条件下的变化规律,基于吉林引松供水隧道工程开敞式TBM现场掘进数据,将TBM刀盘破岩过程分为3个阶段:挤压阶段、起裂阶段和破碎阶段,并对破碎阶段应用统计回归方法,分析在不同岩石饱和单轴抗压强度、完整性系数的条件下,TBM刀盘贯入度与刀盘推力、刀盘扭矩的关系.研究表明,在特定施工条件下,刀盘贯入度随刀盘推力增大呈幂函数曲线增长,随刀盘扭矩增大呈线性关系增长,增长率与岩石饱和单轴抗压强度、完整性系数密切相关.进一步建立对于不同强度、完整性岩石的掘进机掘进速率模型,进行实际工程施工预测,预测结果的平均相对误差都低于16%,表明模型预测精度较高,可以为实际工程施工中操作参数的优化和不良地质条件的捕捉提供帮助.
In order to explore the variation of advance rate of tunnel boring machine(TBM) under different geological conditions, the variations of cutterhead penetration rate with cutterhead thrust and cutterhead torque in different rock saturated uniaxial compressive strengths and rock mass integrity coefficients were analyzed. The machine boring data were obtained in an unshield TBM construction section of Jilin Songhua River water diversion project. The process of the cutterhead breaking rock was divided into three phases,namely squeezing phase, cracking phase and fragmentation phase, and the data in fragmentation phase was analyzed by statistical regressions. Given a specified construction condition, the penetration rate increased exponentially with the cutterhead thrust and linearly withcutterhead torque. TBM penetration rate models for different uniaxial compressive strengths and rock mass integrity coefficients were established to predict the construction parameters in the practical engineering construction, the average relative errors of the predicted construction parameters were all within 16%. The models can optimize the construction parameters and capture abnormal geological conditions during construction due to high prediction accuracy.
In order to explore the variation of advance rate of tunnel boring machine(TBM) under different geological conditions, the variations of cutterhead penetration rate with cutterhead thrust and cutterhead torque in different rock saturated uniaxial compressive strengths and rock mass integrity coefficients were analyzed. The machine boring data were obtained in an unshield TBM construction section of Jilin Songhua River water diversion project. The process of the cutterhead breaking rock was divided into three phases,namely squeezing phase, cracking phase and fragmentation phase, and the data in fragmentation phase was analyzed by statistical regressions. Given a specified construction condition, the penetration rate increased exponentially with the cutterhead thrust and linearly withcutterhead torque. TBM penetration rate models for different uniaxial compressive strengths and rock mass integrity coefficients were established to predict the construction parameters in the practical engineering construction, the average relative errors of the predicted construction parameters were all within 16%. The models can optimize the construction parameters and capture abnormal geological conditions during construction due to high prediction accuracy.
引文
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[13]莫振泽,李海波,周青春,等.基于UDEC的隧道掘进机滚刀破岩数值模拟研究[J].岩土力学,2012,33(4):1196-1202.MO Zhen-ze,LI Hai-bo,ZHOU Qing-chun,et al.Research on numerical simulation of rock breaking using TBM disc cutters based on UDEC method[J].Rock and Soil Mechanics,2012,33(4):1196-1202.
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[15]张魁,夏毅敏,谭青,等.不同围压条件下TBM刀具破岩模式的数值研究[J].岩土工程学报,2010,32(11):1780-1787.ZHANG Kui,XIA Yi-min,TAN Qing,et al.Numerical study on modes of breaking rock by TBM cutter under different confining pressures[J].Chinese Journal of Geotechnical Engineering,2010,32(11):1780-1787.
[16]孙金山,陈明,陈保国,等.TBM滚刀破岩过程影响因素数值模拟研究[J].岩土力学,2011,32(6):1891-1897.SUN Jin-shan,CHEN Ming,CHEN Bao-guo,et al.Numerical simulation of influence factors for rock frag mentation by TBM cutters[J].Rock and Soil Mechanics,2011,32(6):1891-1897.
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[18]卢瑾,高捷,梅稚平.岩石力学参数对TBM掘进速率的影响分析[J].水电能源科学,2010,28(7):44-46.LU Jin,GAO Jie,MEI Zhi-ping.Influence analysis of rock mechanical parameters on TBM penetrating rate[J].Water Resources and Power,2010,28(7):44-46.
[19]BRULAND A.Hard rock tunnel boring[D].Trondheim:Norwegian University of Science and Technology,1998.
[20]宋克志,孙谋.复杂岩石地层盾构掘进效能影响因素分析[J].岩石力学与工程学报,2007,26(10):2092-2096.SONG Ke-zhi,SUN Mou.Analysis of influencing factors of shield tunneling performance in complex rock strata[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(10):2092-2096.
[21]GONG Q M,ZHAO J,JIANG Y S.In situ TBMpenetration tests and rock mass boreability analysis in hard rock tunnels[J].Tunnelling and Underground Space Technology,2007,22(3):303-316.
[22]杜立杰,齐志冲,韩小亮,等.基于现场数据的TBM可掘性和掘进性能预测方法[J].煤炭学报,2015,40(6):1284-1289.DU Li-jie,QI Zhi-chong,HAN Xiao-liang,et al.Prediction method for the boreability and performance of hard rock TBM based on boring data on site[J].Journal of China Coal Society,2015,40(6):1284-1289.
[23]龚秋明,佘祺锐,侯哲生,等.高地应力作用下大理岩岩体的TBM掘进试验研究[J].岩石力学与工程学报,2010,29(12):2522-2532.GONG Qiu-ming,SHE Qi-rui,HOU Zhe-sheng,et al.Experimental study of TBM penetration in marble rock mass under high geostress[J].Chinese Journal of Rock Mechanics and Engineering,2010,29(12):2522-2532.
[24]刘泉声,刘建平,潘玉丛,等.硬岩隧道掘进机性能预测模型研究进展[J].岩石力学与工程学报,2016,35(S1):2766-2786.LIU Quan-sheng,LIU Jian-ping,PAN Yu-cong,et al.Research advances of tunnel boring machine performance prediction models for hard rock[J].Chinese Journal of Rock Mechanics and Engineering,2016,35(S1):2766-2786.
[2]CHEN L H,LABUZ J F.Indentation of rock by wedgeshaped tools[J].International Journal of Rock Mechanics and Mining Sciences,2006,43(7):1023-1033.
[3]姚羲和,赵晓豹,龚秋明,等.滚刀线性侵入试验中岩石破裂模式研究[J].岩土工程学报,2014,36(9):1705-1713.YAO Xi-he,ZHAO Xiao-bao,GONG Qiu-ming,et al.Linear cutting experiments on crack modes of rock under indentation of a single disc cutter[J].Chinese Journal of Geotechnical Engineering,2014,36(9):1705-1713.
[4]CHANG S H,CHOI S W,BAE G J,et al.Performance prediction of TBM disc cutting on granitic rock by the linear cutting test[J].Tunnelling and Underground Space Technology,2006,21(3):271-285.
[5]龚秋明,何冠文,赵晓豹,等.掘进机刀盘滚刀间距对北山花岗岩破岩效率的影响实验研究[J].岩土工程学报,2015,37(1):54-60.GONG Qiu-ming,HE Guan-wen,ZHAO Xiao-bao,et al.Influence of different cutter spacings on rock fragmentation efficiency of Beishan granite by TBM[J].Chinese Journal of Geotechnical Engineering,2015,37(1):54-60.
[6]莫振泽,李海波,周青春,等.楔刀作用下岩石微观劣化的试验研究[J].岩土力学,2012,33(5):1333-1340.MO Zhen-ze,LI Hai-bo,ZHOU Qing-chun,et al.Experimental study of rock microscopic deterioration under wedge cutter[J].Rock and Soil Mechanics,2012,33(5):1333-1340.
[7]马洪素,龚秋明,王驹,等.围压对TBM滚刀破岩影响规律的线性切割试验研究[J].岩石力学与工程学报,2016,35(2):346-355.MA Hong-su,GONG Qiu-ming,WANG Ju,et al.Linear cutting tests on effect of confining stress on rock fragmentation by TBM cutter[J].Chinese Journal of Rock Mechanics and Engineering,2016,35(2):346-355.
[8]马洪素,纪洪广.节理倾向对TBM滚刀破岩模式及掘进速率影响的试验研究[J].岩石力学与工程学报,2011,30(1):155-163.MA Hong-su,JI Hong-guang.Experimental study of the effect of joint orientation on fragmentation modes and penetration rate under TBM disc cutters[J].Chinese Journal of Rock Mechanics and Engineering,2011,30(1):155-163.
[9]刘泉声,潘玉丛,孔晓璇,等.TBM滚刀贯入过程中泥岩破坏特征试验研究[J].岩土力学,2016,37(S1):166-174.LIU Quan-sheng,PAN Yu-cong,KONG Xiao-xuan,et al.Experimental investigation on mudstone fragmentation characteristics in indentation process by TBM disc cutter[J].Rock and Soil Mechanics,2016,37 (S1):166-174.
[10]CHO J W,JEON S,YU S H,et al.Optimum spacing of TBM disc cutters:a numerical simulation using the three-dimensional dynamic fracturing method[J].Tunnelling and Underground Space Technology,2010,25(3):230-244.
[11]满林涛,李守巨.盘形滚刀破岩过程有限元数值模拟[J].工程建设,2011,43(4):1-5.MAN Lin-tao,LI Shou-ju.Finite element numerical simulation of process of rock breaking by disc cutter[J].Engineering Construction,2011,43(4):1-5.
[12]蒋明镜,孙亚,王华宁,等.全断面隧道掘进机破岩机理离散元分析[J].同济大学学报:自然科学版,2016,44(7):1038-1044.JIANG Ming-jing,SUN Ya,WANG Hua-ning,et al.Rock failure mechanism analysis with discrete element method by using tunnel boring machine[J].Journal of Tongji University:Natural Science,2016,44(7):1038-1044.
[13]莫振泽,李海波,周青春,等.基于UDEC的隧道掘进机滚刀破岩数值模拟研究[J].岩土力学,2012,33(4):1196-1202.MO Zhen-ze,LI Hai-bo,ZHOU Qing-chun,et al.Research on numerical simulation of rock breaking using TBM disc cutters based on UDEC method[J].Rock and Soil Mechanics,2012,33(4):1196-1202.
[14]张魁,夏毅敏,林赉贶,等.TBM刀具作用下节理岩石破碎模式研究[J].现代隧道技术,2016,53(2):148-156.ZHANG Kui,XIA Yi-min,LIN Lai-kuang,et al.Breaking modes of jointed rock under a TBM cutter[J].Modern Tunnelling Technology,2016,53(2):148-156.
[15]张魁,夏毅敏,谭青,等.不同围压条件下TBM刀具破岩模式的数值研究[J].岩土工程学报,2010,32(11):1780-1787.ZHANG Kui,XIA Yi-min,TAN Qing,et al.Numerical study on modes of breaking rock by TBM cutter under different confining pressures[J].Chinese Journal of Geotechnical Engineering,2010,32(11):1780-1787.
[16]孙金山,陈明,陈保国,等.TBM滚刀破岩过程影响因素数值模拟研究[J].岩土力学,2011,32(6):1891-1897.SUN Jin-shan,CHEN Ming,CHEN Bao-guo,et al.Numerical simulation of influence factors for rock frag mentation by TBM cutters[J].Rock and Soil Mechanics,2011,32(6):1891-1897.
[17]施文俊,袁宝远.DDA模拟TBM破岩机理[J].科学技术与工程,2012,12(20):5101-5104.SHI Wen-jun,YUAN Bao-yuan.TBM failure rock mechalism with DDA simulation[J].Science Technology and Engineering,2012,12(20):5101-5104.
[18]卢瑾,高捷,梅稚平.岩石力学参数对TBM掘进速率的影响分析[J].水电能源科学,2010,28(7):44-46.LU Jin,GAO Jie,MEI Zhi-ping.Influence analysis of rock mechanical parameters on TBM penetrating rate[J].Water Resources and Power,2010,28(7):44-46.
[19]BRULAND A.Hard rock tunnel boring[D].Trondheim:Norwegian University of Science and Technology,1998.
[20]宋克志,孙谋.复杂岩石地层盾构掘进效能影响因素分析[J].岩石力学与工程学报,2007,26(10):2092-2096.SONG Ke-zhi,SUN Mou.Analysis of influencing factors of shield tunneling performance in complex rock strata[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(10):2092-2096.
[21]GONG Q M,ZHAO J,JIANG Y S.In situ TBMpenetration tests and rock mass boreability analysis in hard rock tunnels[J].Tunnelling and Underground Space Technology,2007,22(3):303-316.
[22]杜立杰,齐志冲,韩小亮,等.基于现场数据的TBM可掘性和掘进性能预测方法[J].煤炭学报,2015,40(6):1284-1289.DU Li-jie,QI Zhi-chong,HAN Xiao-liang,et al.Prediction method for the boreability and performance of hard rock TBM based on boring data on site[J].Journal of China Coal Society,2015,40(6):1284-1289.
[23]龚秋明,佘祺锐,侯哲生,等.高地应力作用下大理岩岩体的TBM掘进试验研究[J].岩石力学与工程学报,2010,29(12):2522-2532.GONG Qiu-ming,SHE Qi-rui,HOU Zhe-sheng,et al.Experimental study of TBM penetration in marble rock mass under high geostress[J].Chinese Journal of Rock Mechanics and Engineering,2010,29(12):2522-2532.
[24]刘泉声,刘建平,潘玉丛,等.硬岩隧道掘进机性能预测模型研究进展[J].岩石力学与工程学报,2016,35(S1):2766-2786.LIU Quan-sheng,LIU Jian-ping,PAN Yu-cong,et al.Research advances of tunnel boring machine performance prediction models for hard rock[J].Chinese Journal of Rock Mechanics and Engineering,2016,35(S1):2766-2786.