When tunnel boring machine tunneling in complex
geological conditions, such as extremely uneven soft and hard rock with hardness
exceeding 180 MPa, the cutter′s rock breaking efficiency is low
and cutterhead jams occur. To address these issues, a rockbreaking test is conducted on granite samples using a disc cutter
rockmachine interaction comprehensive test platform
equipped with a highpressure water jet device. The
influence of water jetassisted mechanical disc cutter
rockbreaking on tunneling parameters and efficiency
under various conditions is investigated using various water jets and tunneling
parameters. The reasonable target distance and pressure of water jet rockbreaking are obtained, as well as the crosstrack
of the water jet and mechanical disc cutter, the change characteristics of
thrust, torque, and rockbreaking efficiency of the
cutterhead of the same track composite rockbreaking
and relatively pure mechanical disc cutter rockbreaking
are validated.
HAN Weifeng
. Experimental Study on RockBreaking
Using a Water Jet Assisted Mechanical Disc Cutter[J]. Tunnel Construction, 2022
, 42(8)
: 1414
-1419
.
DOI: 10.3973/j.issn.2096-4498.2022.08.010
