Theory teaching
Introductory lecture. Classification of drilling machines in underground mining. Rotary drills. Theoretical basis. Calculation of penetration rate. A impact hammer. Percussion drills, description of the operation. Theoretical basis. Power calculations, drilling rate. Sizing of the compressor. Drilling rigs. Hydraulic drills. Theoretical basis. Work methods. Power calculation. Drilling equipment and accessories. Drill bits, rods and accessories. The selection. Classification of excavation machines. Longwall machines. Description and theoretical basics. Cutting picks. Geometry parameters of the pick/wedge. Calculation of the cutting force. Cutting drum. Shearers, technology and operation. Capacity calculation. Power calculation (digging and moving). Plows for coal. Work methods. Capacity calculation. Machines for roadway development - Roadheaders and Continuous Miners. Power and capacity calculations. Selection of the excavation machine. Natural factors. Exploitation factors. Maintenance of drilling and excavation machines in underground mining. Mining workshops.

Practical teaching
Calculations of the piston cycle. Calculating the power of the piston and impact hammers. Calculation of drilling rate, rotary and percussive drills. Selection of drill hammers for known operating conditions. Calculation of the cutting force of the picks (based on the cut depth and based on the shear force). Calculation of the cutting force of the cutting drum. Calculation of the power of the drive motor. Calculation of the parameters and power of the transport device. Determination of the engine power of the excavation device. Calculation of the capacity of plows. Calculation of the capacity of machines for roadway development. Calculating the advance rate cycle. Selection of the excavating machine depending on the natural and exploitation factors.

1. Dragoljub Đokić, Mašine i uređaji za podzemnu eksploataciju i transport – I deo, mašine za bušenje i otkopavanje