Research on the Influence Pattern on the Coal Rock Cutting Efficiency of Cutting Teeth of the Roadheading Machine

In order to improve the quality of the tunnel cross-section formation and the cutting efficiency of the drilling machine, this paper established a horizontal swing cutting model for the cutting head and conducted a simulation analysis of the spatial movement trajectory of the cutting teeth. A finite element simulation model of the cutting teeth cutting coal and rock was established using the Abaqus/Explicit software. The simulation data were processed and statistically analyzed using MATLAB software. The influence patterns of variable cutting parameters and coal and rock properties on the quality of the tunnel cross-section formation and the cutting efficiency of the drilling machine were studied. Thus, the dual-objective optimal cutting parameters for the automatic cutting control of the drilling machine were determined, guiding the cutting head to perform coal and rock cutting operations. The research on the influence patterns on the coal and rock cutting efficiency of the cutting teeth of the tunneling machine can also provide references for solving problems in the swinging state control of the cutting arm and the correction of the cutting head trajectory.