• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2018, Vol. 54 ›› Issue (1): 18-26.doi: 10.3901/JME.2018.01.018

• 特邀专栏:硬岩掘进装备(TBM)的关键基础问题 • 上一篇    下一篇

TBM边缘滚刀组合破岩特性及其影响因素敏感性评价

林赉贶1, 夏毅敏1, 贾连辉2, 吴遁3, 沈斌1, 张旭辉1   

  1. 1. 中南大学机电工程学院 长沙 410083;
    2. 中铁工程装备集团有限公司 郑州 450016;
    3. 中铁十四局集团隧道工程有限公司 济南 250002
  • 收稿日期:2017-03-02 修回日期:2017-07-21 出版日期:2018-01-05 发布日期:2018-01-05
  • 通讯作者: 夏毅敏(通信作者),男,1967年出生,教授,博士研究生导师。主要研究方向为大型掘进装备设计及理论。E-mail:xiaymj@csu.edu.cn
  • 作者简介:林赉贶,男,1988年出生,博士研究生。主要研究方向为隧道掘进机刀盘刀具设计方法与理论。E-mail:linlaikuang34@163.com
  • 基金资助:
    国家重点基础研究发展计划(973计划,2013CB035401)、国家自然科学基金(51475478)、湖南省战略新兴产业攻关(2015GK1029)和湖南省研究生科研创新(CX2014B058)资助项目。

Rock-breaking Characteristics of TBM Gage Disc Cutters and Sensitivity Analysis of Their Influencing Factors

LIN Laikuang1, XIA Yimin1, JIA Lianhui2, WU Dun3, SHEN Bin1, ZHANG Xuhui1   

  1. 1. College of Mechanical and Electrical Engineering, Central South University, Changsha 410083;
    2. China Railway Engineering Equipment Group Co., Ltd., Zhengzhou 450016;
    3. China Railway Shisiju Group Corporation Tunnel Engineering Co., Ltd., Jinan 250002
  • Received:2017-03-02 Revised:2017-07-21 Online:2018-01-05 Published:2018-01-05

摘要: 盘形滚刀是全断面硬岩掘进机(Tunnel boring machine,TBM)破碎岩石的关键部件,边缘滚刀因其安装位置的特殊性,破岩行为不同于正面滚刀。为了研究边缘滚刀组合破岩特性以及破岩参数对其破岩性能的影响,采用颗粒离散元法建立边缘滚刀组合破岩模型,研究边缘滚刀组合破碎花岗岩与石灰岩时岩体裂纹演化过程、应力分布特征以及刀具载荷变化规律。在此基础上,建立基于敏感度熵权的边缘滚刀破岩参数综合评价模型,研究边缘滚刀破岩敏感性参数对破岩效率、裂纹扩展能力等的影响程度。研究结果表明:不同岩石条件下,滚刀破岩特性以及破岩参数敏感度有所区别;滚刀间倾角差、刀盘圆弧半径和刀刃角对边缘滚刀破岩性能影响最为显著,刃宽与贯入度影响次之,刀盘转速影响最小。

关键词: 边缘滚刀, 敏感性分析, 破岩机理, 全断面硬岩掘进机

Abstract: The disc cutter is the key part of a tunnel boring machine (TBM). The rock-breaking behaviors of the gage cutter are different from those of the normal cutter due to its special installation position. To investigate the rock-breaking mechanisms of gage cutters and the effects of rock-breaking parameters on the rock-breaking performance, a simulation model of rock fragmentation for the gage cutters interacting with the granite and limestone is established, and the evolution process of rock cracks, the regularities of changes in the stress distribution and the cutter load are presented. Based on the simulations, the effects of rock-breaking sensitivity parameters on the rock-breaking performance of gage cutters are obtained using a comprehensive assessment model of attribute recognition on the basis of entropy weight of sensitivity. The results show that the rock-breaking characteristics of gage cutters and the sensitivities of their rock breaking parameters are different under different rock conditions. The main influence factors on the cutter rock-breaking performance are the dip between adjacent cutters, the arc radius of cutterhead and the cutting edge angle, then the next are the width of cutter ring and the penetration. Finally the minor influence factor is the rotational speed of cutterhead.

Key words: gage disc cutter, rock-breaking mechanism, sensibility analysis, tunnel boring machine

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