To realize insitu breaking and renewal of a
pipe when a roadheader cutting reinforced concrete pipe, the cutting parameters
of the roadheader cutterhead are analyzed. Mechanical and mathematical methods
are employed to study the calculation method of cutting torque based on the
mechanism of reinforced concrete pipe cutting by gear hobs. Finally, a
cutterhead test is designed to systematically investigate the variation laws
and influencing factors of the cutting parameters and provide parametric
guidance for tunneling control. The following results are obtained: (1) The
cutterhead torque has a Boltzmann function relationship with time when the
cutterhead is cutting full sections of reinforced concrete pipes. (2) The
cutterhead torque increases linearly with an increase in advance speed of the
cutterhead, and decreases first and then increases with an increase in the
rotation speed of the cutterhead. (3) Based on the cutting parameters of the
cutterhead and the cutting specific energy, the penetration degree of 8~12 mm/r
is determined as the best penetration degree interval.
SU Minghao
,
GAN Yu
,
LI Yang
,
JIA Lianhui
. Study on Roadheader Cutterhead Torque for Cutting
Reinforced Concrete Pipe[J]. Tunnel Construction, 2022
, 42(9)
: 1628
-1636
.
DOI: 10.3973/j.issn.2096-4498.2022.09.015
