Distribution Law of Excavating Load of TBM Disc Cutter and Cutterhead

Abstract:

Cutterheads and disc cutters are the key components of Tunnel Boring Machine (TBM) used to fulfill the rock-breaking task. In order to study the variation and distribution law of cutting forces induced by disc cutters on TBM cutterhead, a finite element model of rock-breaking process is established based on the extended Drucker-Prager yield criterion for rock and then the excavating process of cutterhead is simulated. The simulation results show that: in the rock fragmentation process, the rock-breaking forces are step changing; with the increase of installation radius, the vertical forces of inner and face cutters increase, while the lateral forces decrease; with the increase of installation angle, the vertical forces of edge disc cutters decrease, while the lateral forces increase; the mean total thrust and torque of cutterhead are 5418.2 kN and 1624.4 kN·m respectively, the simulation results are verified by engineering data.

• Periodical: Applied Mechanics and Materials (Volume 615)
• Pages: 22-26
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.615.22
• Online since: August 2014
• Authors: Xiang Heng Zhu*, Yi Min Xia, Tao Ouyang, Kai Yang
• Keywords: Cutterhead, Disc Cutter, Excavating Load, Tunnel Boring Machine

References

[1] Hong W: Journal of China coal society, Vol. 35(2011), P. 1815~1820.

[2] Cuixia S, Yanqun W: Journal of Tianjin University, Vol. 44(2011), P. 522~528.

[3] Wu L, Tianmin G: Tunneling and Underground Space Technology, Vol. 37(2013), P. 37~44.

[4] Kezhi S, Mengshu W: Journal of basic science and engineering, Vol. 19(2011), P. 591~599.

[5] Z.X. Zhang, S.Q. Kou: Rock Mechanics and Rock Engineering, Vol. 36(2003), P. 39~61.

[6] M. Entacher, G. Winter, R. Galler: Tunneling and Underground Space Technology, Vol. 38(2013), P. 487~496.