The factors influencing the
drilling process of the rock-drilling
trolley are analyzed and tested to improve the drilling efficiency of rock-drilling trolley in mountainous tunnels. By studying the influence
of propulsion pressure, impact pressure, and rotation speed, the optimal
construction parameter combination is obtained. Through multi-parameter testing
under different rock conditions, the data of drilling speed and energy
consumption are collected, and the data are processed by least square method,
coupling, and regression analysis. The results show the following: (1) The
propulsion pressure is linearly related to the drilling velocity, and the
impact pressure exhibits a quadratic parabolic relationship with the drilling
velocity. (2) It is concluded that the upper limit of the reasonable threshold
of propulsion pressure is 8 MPa, and the impact pressure is the optimal between
15 and 17 MPa. (3) The rotation speed has little effect on the drilling speed,
so it should not be overhigh.
KANG Jia′an, SHANG Erdong, YU Peng, LI Rongxin, HUO Xiangyu
.
Research and Application of Optimal Drilling Efficiency Based on Rock-Drilling
Trolley
[J]. Tunnel Construction, 2024
, 44(S1)
: 265
-273
.
DOI: 10.3973/j.issn.2096-4498.2024.S1.029
