Original scientific paper

https://doi.org/10.17559/TV-20141107084349

Simulation analysis of rock braking mechanism of tunnel boring machine

Lida Zhu ; School of Mechanical Engineering & Automation, Northeastern University, No. 3-11, Wenhua Road, Heping District, Shenyang, Liaoning, 110819, P. R. China
Tianhua Wei ; Dalian Design & Research Institute, China First Heavy Industries, No. 96 North East Main Street, Dalian, 116600, P. R. China
Baoguang Liu ; School of Mechanical Engineering & Automation, Northeastern University, No. 3-11, Wenhua Road, Heping District, Shenyang, Liaoning, 110819, P. R. China
Tianbiao Yu ; School of Mechanical Engineering & Automation, Northeastern University, No. 3-11, Wenhua Road, Heping District, Shenyang, Liaoning, 110819, P. R. China

Abstract

Aiming at answering the questions of wear and failure of hob in the rock breaking process, the rock breaking process was simulated in different broken rock conditions by using finite element method. The relationship between normal force, lateral force, rolling force and time was obtained by rock breaking simulation analysis on the single edge disc cutter. The rock stress was analysed by setting different cutting depth when the stress reaches the maximum compressive strength of the rock. The best cutter space was also obtained in a certain depth by analysing the stress state of the cutter in different cutter space. The paper concluded with the effect of the disc cutter cross section shape on the wear. Therefore the study provided references for the wear and the optimized design of hob on Tunnel Boring Machine.

Keywords

rock broken mechanism; stress analysis; simulation; tunnel boring machine (TBM)

Hrčak ID:

169342

URI

https://hrcak.srce.hr/169342

Publication date:

29.11.2016.

Article data in other languages: croatian

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