Current performance limits: Hard rock tunnel boring machines

1979 ◽  
Vol 16 (3) ◽  
pp. 59
Keyword(s):  
Hard Rock ◽  
Performance Limits ◽  
Tunnel Boring Machines ◽  
Tunnel Boring ◽  
Boring Machines ◽  
Rock Tunnel

Research on the Load on Cutter Head of Hard Rock Tunnel Boring Machine

2014 ◽  
Vol 684 ◽  
pp. 303-307 ◽  
Author(s):  
Xiao Xu Zhao ◽  
Ya Dong Gong
Keyword(s):  
Hard Rock ◽  
Rolling Force ◽  
Tunnel Boring Machine ◽  
Tunnel Boring Machines ◽  
Tunnel Boring ◽  
Particle Hydrodynamics ◽  
Boring Machines ◽  
And Performance ◽  
Rock Tunnel ◽  
Cutter Head

Study on the load exerted on cutter head is very useful for the design and performance prediction of hard rock tunnel boring machines. A composite model based on smoothed particle hydrodynamics and finite element method was carried out using AUTODYN software to study the rock fragmentation mechanism of constant cross-section disk cutters in cutter head. The normal force, rolling force and side force on the disk cutters with different cutter radius were researched in the numerical simulation study. The results were verified by historical literature data. To obtain the distribution of the forces with different cutter radius, the loading of cutter head of a Ф5.75 hard rock tunnel boring machine were analyzed. The result shows that it is useful for cutter head’s design and its layout optimization.

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