fan drilling

fan drilling

[′fan ‚dril·iŋ]
(engineering)
Drilling boreholes in different vertical and horizontal directions from a single-drill setup.
A radial pattern of drill holes from a setup.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
It is expected that the mine will produce 2.145 Mt/y of ore from a mixture of cut and fill and sub-level stoping with tophammer fan drilling of 64 or 76 mm diameter holes up to 20 m long.
The versatile StopeMaster can be used for raise drilling, cable bolting, fan drilling, ring drilling and parallel drilling.
Table 2: The drilling, loading and haulage fleet Drill jumbos Type Task Number Tamrock H207M Development 6 Puma 2100EH-A Development 1 Tamrock Solo 406 Fan drilling 3 Tamrock Solo 606 Fan drilling 7 Atlas Copco Simba H221 Fan drilling 4 Atlas Copco Simba H253 Fan drilling 2 Cubex Megamatic Large diameter slot holes 5 There are also 13 bolting rigs, mainly Atlas Copco Bolter H126s.
It is also equipped with the Tamrock Measuring System (TMS), an angle indicator system for superior accuracy during rig set-up and fan drilling. TMS also provides information on hole depth and penetration rate.
He also comments on long-hole fan drilling. "Again reference is to softer rock conditions and drilling patterns demanding holes less than 25 m in length and less than 89 mm in diameter.