AU604573B2 - A method of positioning a feed beam provided with a rock drilling machine - Google Patents

Description

Fo~rm COMMONWEALTH OF AUSTRALIA PATENTS ACT I05S260 COMPLETE SPECIFICATION 60(O4N15 73 Class Int, Class ApplIkaltin Nomrber.: Lo.dc: Comploto tociicatlon Lodgqd.

Aocpted; Publishod;, pr~orlty to 0 00 0 0 04 440 0 N~me of Applicant: 0 *4 w 0 0 t, p W~44~ OW(.p'Ian 0044 :.Ad~ross for $IurvttaIi ATVJAS (CQPCO A[<TMOO~LAG th~! l~ IEf)Vf) W $o,*h 4 50O Q U)f1N UUOV M I)UNR, AUS t ~A4000.QI comorno s $tiatiorn for thet inventU$o rt olod.

A HN'T1101) OP' POSIVON41N A VNEJ) 4EANt PRIWDE,[ VITU A ROC[K Ilwrdsttmn I oiL riptln~ of t111 Inirdft,~ i"Ouiing ttle buit nethodo~tporfo(MfIflit I tnovfijq to 1, 1- LL~IY-II__~ A method of pesitioning a fe.ed beam povided with, a rok drlling, machine The present tnvention relates to a method of positioning a feed beam provided wtth a rock drilling machine in a predetermined position and with a predetermined direction relative to a coordtnate system common for a rock body, The method, cordin to the invention is particularly quitabe for use in so-called prduCtiqtj drllJing, 4.o, when mineral, whose position in space earlier has been datevminod by means of prospecting drilling or other methods, is to be mined, According to prior art one has, in order to achiev high preeson in the positioning of the rock drilling maehioe4 had to use complicated measurig methods performed by special line sueyrsp ,Because Of this one has h1d to decrease the dematds for accuracy in the as0uremOnt in order not to Make t),te mining too expensivq and slow, As a ponsoquenoo one has Obtained more rook waste in the mining which has iease d the costs, Therfore, one had t* kalanco between the requirements of low meauring Cots and little rock Was to Through the present invention, which to dottned in the ubpsquent claim, 01 simp~ler sd age~utei, msur mehod is wah-iet vo In the method aocQdin&g to the invqpntiot oscillation energy tS used in ordet e asu the dlstnc between a UIEl of itw hL~h are fxed 1 an f thoh 6novab1e relative to the CoordinTW-a Oystem 1 .400 up for the area whoro dlling is to occur, and soma points Whicoh are fxed rel4tive to the drilling machine, This o$,tll a tton onorgy can for inot4a ebe itn the form~ of uof trasonl, Intarowave or optical adiation, Th u onic technique h46 the aantae of being both cheap and curate one can increase the accuracy throughi incvnaing the frequency of the ultrsonic signal, The frequency is rinly limited by the damping of the signal which results therein that tho measurable distance becomos, practicaly short at too high eq4i4ncies, A frqueq vy of 100.v20 kz has turnled out eob suitable, Tho Efiod rfbe lves/trba nsmLtterm, the, mierophonos, tire psitloned by r, non o et ltromagnotic beaz, for iateace laser beams, which are tinl out in, predetermined, preoforsby parallel, diections, Tho bosom haeo predeaternined ptsiorin. in 14pac In ordet e te microphns in ortin pltogo Oe 2, turnable microprism. is used which is positioned in one of the laser beams.

With this set-up one can continue with the drilling for 10415 m before a new set-up o'f the microphonou is needed, The positioning of the microphonles lengthws in 'tokj~tunne-l is deetmino by 01e4nS of a measurn tae Ths transmitters/receivers which are positionied on the foed beam of tho, drill rig are Suitably ultrasonic goneratoi~a, In the practising_ of the, invention one suitably uses 4 mioropro~ossor with, acompanytng memory for storin& the different measured delay time inervals and for P,41Uatrig how the feod beam should be steered in order that the prodetermined position and 4he predetermtned directijon is to be achieved, Suqc-h A system 44n control the prosefltatiofl of the positionl of the feed beam en a -display or i.n A more 4utctiizod system directly control the drill rig go that the drilling can tak~e Place to a fully autqimatto way, Aerbodiment of the invention is ducritted\\bitow with reference to the Sjtgdrawing Whsich eatl ly-hw-a ttn-ov rd a feed beam prvi~ with M0eauglnrg equipMent for the Pralctisinta of thle invention, Zn the draving a rook body 2I In which a jA-ro 2 has beon 1blasto4, is shown, When th'o in-ventio is, practised three ole, -romnilc bearns, for instance ler beams 1 r created to predetermined, preferably *p4rld directions with predetermined positioons A, microphone 13,14 and respectively is potioond tn each of the alectomapnetic beams. In order to got the microphone s in a ontmon plane a not shown turnable microprism to tfdd n this~ way one can eamily obtain a microphione plane which is parallel to, another microphao plane situated tit a distance, In the 'room- 22 a dtrill rig o which the feed b~eam 12 13 shown, in placed. Tho foodc beam ins provided with a root., dril~ling machine 11 movable to~and-fro alot%, the feed beami, Two ultrasonic transmitters 16,11 are prowided on the feed beam, Through meapurlo& otf tho dolay tine interval for the utatonic sound between; cacti of the sound, trans.mtteorn aod. oc of th(A microphone.' the, poattfoos of th4 tttenicto transmtttdra in 'mpnco to determined 1 Through this th4 position nd diretion of thie fetid bea in apae Is determnod, The feed beaim is then controlled, tonually or autoattedly, so thant th6 kilttsoc arnaittors come lato petermined posittio relative to 4, 4 common coordinate system for the rock body 21, The delay time intervals between the transmitter 16 and the diffeent nicrophQ1es a represenaed by the lengths of the lines 63,64 and 05, The delay time intervals between the transmitter 17 and the different microphones are represented by the lengths of the lines 73,74 and 5. When so is desirable the measurements and caloutlations of positions and reoitoons and possibly automatic alignment of the food beam are performed with the aid of a Cf8roprocessar, P: Pt Q P e dd ni 8 %f I:C i' i)

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Claims (1)

1. 44.