Research and Analysis on the Arc Length of the Rock Breaking Point on TBM’s Disc Cutter

doi:10.12068/j.issn.1005-3026.2015.06.018

Abstract

Abstract: Based on its rock breaking movement in the full-face tunnel boring machine (TBM)， and the interaction between the disc cutter and the tunnel face being taken into account at the same time， a kinematics model of disc cutter was built by using coordinate transformation matrix method of space geometry and spatial kinematics. The three-dimensional figures of the theory crushed trajectory made by the disc cutter on the tunnel face and the arc length of the rock breaking point were obtained by using Matlab software. The simulation results show that the arc length on disc cutter decreases with the increasing of the cutter radius on cutter head， but the total arc length after cutter head rotating one circle increases linearly. The results are useful to research on tool wear and rock breaking mechanism， as well as to optimize the design and layout of disc cutters on the cutter head.

Key words: tunnel boring machine, disc cutter, rock-broken mechanism, cutter head, simulation

CLC Number:

TP391.75

GONG Ya-dong， ZHAO Xiao-xu，CHENG Jun. Research and Analysis on the Arc Length of the Rock Breaking Point on TBM’s Disc Cutter[J]. Journal of Northeastern University Natural Science, 2015, 36(6): 838-842.

References

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