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首页> 外文期刊>Journal of Mechanical Science and Technology >Comparison of the mechanical performance between two-stage and flat-face cutter head for the rock tunnel boring machine (TBM)
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Comparison of the mechanical performance between two-stage and flat-face cutter head for the rock tunnel boring machine (TBM)

机译：岩石隧道掘进机（TBM）两段式和平面刀头的机械性能比较

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摘要

To overcome the drawbacks of the large flat-face TBM cutter head (for example, enormous rock cutting forces and eccentric forces cause excessive deformation of the cutter head and damage to the main bearing), a two-stage cutter head is introduced. The two-stage cutter head was designed using grey relational analysis method according to the flat-face cutter head applied in the West Qinling Tunnel, China. The mechanical performance analysis models of the two cutter heads in the layered-banded rock (LBR) mixed ground were built to calculate the cutter heads' rock cutting thrust and torque, eccentric forces and overturning moments. The two cutter heads' deformation and stress distribution were also compared. We concluded that with the same penetration, the thrust, torque, eccentric force, overturning moment, deformation and maximum stress of the two-stage cutter head were smaller than those of the flat-face cutter head.
机译：为了克服大平面TBM刀盘的缺点（例如，巨大的岩石切削力和偏心力会导致刀盘过度变形并损坏主轴承），引入了两级刀盘。根据西秦岭隧道应用的平面刀头，采用灰色关联分析法设计了二级刀头。建立了层状带状岩石（LBR）混合土中两个刀盘的力学性能分析模型，计算了刀盘的岩石切削推力和转矩，偏心力和倾覆力矩。还比较了两个刀头的变形和应力分布。我们得出的结论是，在相同的穿透力下，两阶段刀头的推力，扭矩，偏心力，倾覆力矩，变形和最大应力均小于平面刀头。

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