A study of electrothermomechanical destruction of hard rocks with a rotary heading machine

Theoretical and experimental studies have been made to find the efficient surface shape of the working member of the electrothermomechanical rotary machine and the position of the infrared radiators (IRRs) and the mechanical tools that take into account the interactions of the electrothermal (ET) and mechanical parameters. The authors studied the face shapes for different ET systems: a single flat IRR, a group of fixed IRRs, or a group of IRRs rotating around a common axis.