To investigate the effect of tunneling parameters on
mucking efficiency of tunnel boring machine(TBM) in the construction of a
pumpedstorage power station inclined shaft, a numerical calculation model
of mucking of cutterheads with two different diameters is established. The
effect of different advancing speed and rotation speed of cutterhead on the
mucking efficiency and rate of the cutterhead is analyzed. The simulation
results reveal the following: (1) The mucking efficiency of the largediameter cutterhead is larger than that of the smalldiameter one. With an increase in advancing speed, the smalldiameter cutterhead shows a better mucking performance than the
largediameter one, and the mucking efficiency can
reach 80.02%. (2) The mucking efficiency and rate of both cutterheads increase
first and then decrease with increasing rotation speed of cutterhead. The largeand smalldiameter cutterheads achieve the
maximum mucking efficiency of 74.34% and 79.82% at rotation speed of 6 and 7
r/min, respectively. (3) Compared with the advancing speed, the rotation speed
of cutterhead has a greater effect on the mucking performance. The mucking
efficiency and rate would sharply decrease when the rotation speed of
cutterhead is too high. Therefore, in the construction of pumpedstorage power station inclined shaft with TBM, reasonable
operational parameters should be arranged to achieve efficient mucking of
cutterhead.
TANG Jianguo
,
PENG Zhengyang
,
ZHANG Xiangfu
,
REN Xin
,
YUE Jinwen
,
ZHOU Fangjian
. Effect of Tunneling Parameters on Mucking Performance
of Tunnel Boring Machine Cutterhead in PumpedStorage Power Station Inclined Shaft[J]. Tunnel Construction, 2022
, 42(S2)
: 29
-35
.
DOI: 10.3973/j.issn.2096-4498.2022.S2.005
