• CN:11-2187/TH
  • ISSN:0577-6686

›› 2011, Vol. 47 ›› Issue (15): 161-168.

• 论文 • 上一篇    下一篇

土压平衡盾构机刀盘刀具布置方法研究

蒲毅;刘建琴;郭伟;裴瑞英   

  1. 天津大学机械工程学院
  • 发布日期:2011-08-05

Research on Cutting Tool Layout Method of Earth Pressure Balance Shield

PU Yi;LIU Jianqin;GUO Wei;PEI Ruiying   

  1. College of Mechanical Engineering, Tianjin University
  • Published:2011-08-05

摘要: 研究土压平衡(Earth pressure balanced, EPB)盾构机刀盘刀具的布置方法,目的是为了确保刀具结构布置的合理性和实用性。依据刀具磨损的等寿命原则,提出确定刀具数量的磨损系数法和掘进系数法;针对具体施工问题,可预测盾构在开挖区间,刀具的磨损量以及许用磨损情况下刀具的掘进距离,为保障工程的安全顺利进行提供参考。基于阿基米德螺旋线布置方法,计算以刀具磨损的等寿命原则下,主切削刀的布置曲线;提出刀具平面对称布局原则,分析刀具的切削过程,得到单把刀具的实际切深;建立EPB盾构刀盘上先行刀的立体布局方法,计算得到先行刀的超前量;结合南京地铁二号线TA07标段,验证了刀具布置方法的正确性。研究内容和研究方法可为EPB盾构机刀盘的选型和设计奠定理论基础。

关键词: 刀具布置, 等寿命原则, 土压平衡盾构机, 先行刀, 主切削刀

Abstract: To ensure rationality and practicability of the cutter configuration, it is necessary to propose the method of cutting tool layout of earth pressure balance (EPB) shield. According to the equal-life principle of tool wear, the wear coefficient method and tunneling coefficient method are proposed to determine the number of tools; When it comes to a specific construction, it also can predict tool wear condition and the tunneling distance under the allowable attrition in the range of the shield tunnel excavation, which offer a reference for the safety of project; Based on Archimedes spiral layout method, the arrangement curve of drag bits on cutter head should be calculated according to the equal-life principle of tool wear; In order to obtain the actual depth of a cutting tool, the rule of plane symmetry layout of the cutting tool is put forward, and cutting process is analyzed; the first knife’s three-dimensional arrangement method of the EPB shield is established, the actual cutting depth of a single tool is obtained; The accuracy of the cutting tool layout theory above is investigated with the example of TA07 of Nanjing Metro number two line. The research content and method lay a theoretical foundation for the EPB shield cutter selection and design theory.

Key words: 国家自然科学基金(500975194)和国家重点基础研究发展计划(973计划;2007CB714002)资助项目

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