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2KV-A

HEADING MACHINE

The 2KV-A raise-borer is designed for driving vertical and inclined rise workings in rocks with an ultimate strength σcomp= 210 MPa in mines with no hazardous concentrations of gas and dust. Raise workings are driven by boring a pilot hole from top to bottom until entry to the lower level and by boring a drift across the entire section from the bottom upwards. Rock is broken by roller-bit drilling.

Parameters
Cutting tool diameter, m	1.25/1.5/1.8
Drilling height (depth), m, max	160/185
Pilot borehole drilling diameter, mm	270
Angle of a raise inclination from the horizontal line, rad. (deg.)	1.047-1.83/60-105
Rock holing performance at sсоmp= 210 MPa, m3/h, min:
- 1.25 m-dia. cutting tool	2.1
- 1.5 m-dia. cutting tool	2.9
- 1.8 m-dia. cutting tool	3.6
Total installed power of electric motors, kW	150.5
including the cutting tool drive, KW	120
Overall dimensions of the drilling rig in the working position, mm:
- length	1570
- width	1460
- height	4000
Mass of the raise-boring machine, t, max	63.2

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