盾构机刀盘刀具的优化布局设计与刀具使用寿命提升研究

Research on Optimal Layout Design and Tool Life Improvement of Cutter Plate for Shield Tunneling Machine

刀盘是盾构机的主要工作部件,不同地质地层应采用不同的刀盘结构形式和刀具布置,盾构刀具作为掘进过程中的切削工具,选型与布置影响着盾构的使用性能,刀盘及刀具的好坏关系到盾构施工的成败,影响着盾构掘进的速度和效益,本文结合阿基米德螺旋线原理布置刀盘刀具,并考虑到刀盘刀具的使用寿命,其中包括刀盘的挖掘系数和磨损系数的计算,应用等寿命原则确定刀具数量,通过这种布置方案刀盘的寿命将提高大约15%。

Cutter head is the main working part of shield machine. Different cutter head structure and cutter arrangement should be adopted in different geological strata. Shield cutter is used as cutting tool in tunneling process. The quality of cutter head and tool is related to the success or failure of shield construction and affects the speed and benefit of shield tunneling. In this paper, the cutterhead is arranged according to the principle of Archimedes spiral line, and the service life of cutterhead is taken into account. It includes the calculation of the digging Coefficient and the wear Coefficient of the cutter head, and the determination of the number of the cutter head by applying the equal life principle.