The methodology for calculating the axial force of the drill rig feed mechanism when drilling a circular fan of boreholes depending on their direction is considered.
Drilling equipment with pneumatic drill heads is the most widespread in the mining industry. When selecting rational drilling regions in specific mining conditions, it is necessary, along with other parameters, to control the amount of compressed air consumption.
At the system of underground development of mica-bearing veins of small and medium thickness with open cleaning space, which is being implemented nowadays, it is necessary to drill vertical or slightly inclined boreholes with a diameter of 50-75 mm and a depth of 15-25 m.
