To explore the control parameters of the effective
assistant obstacle breaking by abrasive jet and determine the parameter
combination of highefficient obstacle breaking, an
experimental study is conducted on abrasive jet cutting pile reinforcement
under the postmixed conditions of a large target
distance of more than 5 cm, high traverse speed of more than 3 m/min, and
repeating cutting based on an abrasive jet equipped on the shield. The
effective parameters of the abrasive jet cutting pile reinforcement are
determined. Additionally, the influence of control parameters on cutting
efficiency is investigated based on jet energy consumption. The results show
that the critical pump pressure for steel failure is approximately 150 MPa, and
the optimal target distance for volume cutting efficiency is 5~10 cm. Compared
with the first five cuts, the depth cutting efficiency is reduced by
approximately 42.5% when cut 20 times, and the volume cutting efficiency drops
by approximately 12.14%.
CAO Wenzheng
,
YU Jiale
,
LI Yao
. Experimental Study on Performance of Abrasive Jet
Cutting Pile Reinforcement[J]. Tunnel Construction, 2021
, 41(9)
: 1509
-1515
.
DOI: 10.3973/j.issn.2096-4498.2021.09.009
