| TBM多刀不同切削顺序破岩过程的数值研究 |
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| 引用本文： | 谭季秋,谭青,夏毅敏,徐孜军.TBM多刀不同切削顺序破岩过程的数值研究[J].湖南工程学院学报(自然科学版),2011(3):18-21. |
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| 作者姓名： | 谭季秋 谭青 夏毅敏 徐孜军 |
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| 作者单位： | 1. 湖南工程学院机械工程学院,湘潭,411101
2. 中南大学机电工程学院,长沙,410083 |
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| 基金项目： | 国家自然科学基金资助项目(51074180); 长沙市重大科技专项资助项目(K1003149-11) |
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| 摘 要： | 为了研究不同切削次序对TBM刀具破岩过程的影响，基于2D离散单元法，利用离散元仿真软件建立了无围压条件下三把TBM刀具按不同次序截割节理不发育岩石的仿真模型．在此基础上设计了一组数值试验，成功地模拟出了TBM刀具在切割岩石时，岩石裂纹生成、扩展和岩石破碎块形成的全过程．仿真结果表明：不同时加栽时所需的刀具临界应力更大；...
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| 关 键 词： | 切削顺序 TBM刀具 破碎模式 裂纹扩展 数值仿真 |
Numerical Study on Process of Breaking Rock by TBM Cutter in Different Cutting Orders |
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| TAN Ji-qiu,TAN Qing,XIA Yi-min,XU Zi-jun.Numerical Study on Process of Breaking Rock by TBM Cutter in Different Cutting Orders[J].Journal of Hunan Institute of Engineering(Natural Science Edition),2011(3):18-21. |
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| Authors: | TAN Ji-qiu TAN Qing XIA Yi-min XU Zi-jun |
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| Institution: | TAN Ji-qiu1,2,TAN Qing2,XIA Yi-min2,XU Zi-jun2(1.College of Mech.Eng.,Hunan Institute of Engineering,Xiangtan 411104,China,2.College of Mechanical and Electrical Engineering,Central South University,Changsha 410083,China) |
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| Abstract: | To research into the effect of different cutting orders on breaking mechanism of TBM cutter,this paper establishes the simulation models of breaking rock without joints by double TBM cutters in a simultaneous and sequential orders,which is based on the 2D discrete element method.A series of numerical experiments are designed and the whole process of production and propagation of crack and rock breaking is successfully simulated.The simulation results show that the cutter order determines the breaking mode.T... |
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| Keywords: | cutting order TBM cutter breaking mode crack propagation numerical simulation |
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