Undersurface core drilling machine is intended for drilling of prospecting wells (with preservation of the interior of rock in the form of a core- sample) and technological shot- holes and wells (solid face) up to 50 m in depth in underground mine workings which are dangerous because of gas (methane) and dust contents.
Drilling is possible, both with air blowing from the installed compressor, and from a hook-on compressor set, and also with washing from the hook-on pump station.
The manipulator of the machine allows to make a circular drilling in the section of mine workings with a minimum height of 2,4 m, and also a drilling in a face.
Small overall dimensions and the maneuverability of the machine allow to carry out works in the mine workings passed by mining combines Ural-10R (S=9,4 m2) and Ural-61A (S=8 m2).
Movement of the machine on mine workings and execution of works for drilling is carried out as in the independent mode (from the diesel drive), and with a power supply from the mine power supply network.
On the request of the customer, the machine can be completed with a hand hydraulic and pneumatic tool (chainsaw, hammer drill, air- hammer, power wrench, etc.).
Technical features
| Drilling specifications: | |
| Rock strength acc.to the scale of Prof. M. Protodyakonov | f≤8 |
| Drilling diameter with core recovery, mm | 76; 93 |
| Drilling diameter (solid face), mm | 42; 48 |
| Drilling depth, m | up to 50 |
| Minimal head room, m | 2,4 |
| Type of drilling | rotary drilling with air blowing |
| Chassis: | |
| Speed, km/h | 0…12 |
| Axle configuration | 4х4 |
| Ground clearance, mm, no less than | 200 |
| Climb grade, degree | not less than 12 |
| Turning radius on overall dimensions, m | not more than 15 |
| Capacity of cable- reel, m | not less than 200 |
| Power output, kW: | |
| in electric drive mode | 45 |
| in diesel drive mode | 60 |
| Supply voltage, V | 660/1140 |
| Electric equipment of electric drive | conforms to the 1. group of electric equipment acc. to GOST 30852.0 (mine- type, explosion-proof) |
| Overall dimensions (length x width x height), m | 7,2х2,0х2,0 |
| Weight of the machine, tons | not more than 10 |
