7/27/2019 Surface Mine Blast Design and Consultant System http://slidepdf.com/reader/full/surface-mine-blast-design-and-consultant-system 1/8 SCHECK, D.E., CHATI'ERJEE, P.K. and WEI SUN, M.S. Surfa ce mille blast design and consulta nt system. AP COM 87. Pro c«dings of th e Twen t i eth In tcrn"liona l Sympo siu m on t he A ppli cation of Computers and Malh emati es in th e Miner al In du str i es. Vo lume J: Mining. J oh an n esburg, SA IMM, 1987. pp . 181 - 1 88. Surface Mine Blast Design and Consultant System D .E. SCHE CK, P.K. CHATIERJEE and M.S. WEI SUN Department of industrial Systems an d Desi gn Engin eering, Ohio Univer sity, Athens, Ohio, US A A comp uter-aided blast design coll su l tanL system ha s been de ve lo ped. Th e software consists of two modules: one uses theoreti cal and empiri ca l formulae and pro ce dures to de sign a blast based on user suppli ed geo logica l Hnd mechan ical data, while the other is an exper t sys lem t ha t analY7 .es blast vibration pro blems a nd recom me nds re medial ac t i o n using k. no wle d ge b ased ru l es. Th e sys tem i s c urr ently und e rgo ing field eva lu ation . Introduction The me thods of bl a sting over burden i n surface coa l m in es vary with the c haract erist ics of the formation, its depth, an d the type of mechani- ca l equipment ava ilabl e for its s ubsequent removal. Since the si ze a nd depth of dr il l holes, dri ll ing pat te rn, grad e and typ e of explo s ives, and the loa di ng and firing techniqu es wi l l have a s i gnificant impact on the overal l productivity of the m ining operation as well as the adve rse effects on the sur round ing env i ronment , the need exists for a system to desi gn bl ast s in accor dance with good pra ctice and to iden ti fy solutions to blasting prob l ems . Bl ast design procedures have been reduced to formulae and an algorith- ~ i c process 1 ,2 w h ich can be pro grammed for a computer using conven tion al procedural language, Since the procedures are based on i deal- ized condit i ons, the re wi l l always be some dis crep ancy bet ween design exp ectations an d the observed results. When this discrepancy is signi ficant , blas t problems may become severe, for exa mp le, vibra tion levels and airblast l evels can e xc eed ac cep table levels. If this s i tuation occurs, adjust me nts to the blast design m ust be made . Relating b l ast eff ec ts to specific desi gn param ete rs may be diff icu lt since some resu lt s such as excessive back break or poor fragmentation can on ly be de sc ribed subjectively_ Interpreting these observed res ul ts, identify i n g th e cause and suggesting remedial actions often requires the advic e of a n exper ience d , professional blasting engi- neer. 3 since such persons m ay no t be readily available or too expen - sive t he a contin ual basis, o use on poss ibility of capt ur ing the reducing it to c om very ap p eali ng. T he of recent l y developed expertise and puter code is av ail abili ty artific i a l in tel ligence ( AI) soft ware too ls has made such a task a feasible e n d e a v ~ r 4 / 5 Numerous practi c3 1 applications of AI techno l ogy have emerged SU RFACE MINE BLAS T DES IGN AND CONSUL TA N T SYSTEM ISI •
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7/27/2019 Surface Mine Blast Design and Consultant System
1. KONYA, C. J . and WALTER, SR.,E . J . Rock blas t ing . U.S. Depa r t ment of Transpo r tat ion , 1985.
2. ATCH ISON, T.e . Fragmen ta t ionpr inc ip les . Surface Min ing.Ameri ca n Ins t i tu te of Mining,Me ta l lu rg i ca l , a nd Petroleum
Engineers , I nc . , 1968.
3. DUVALL , W. I . AND DEV I NE, J .F .Avoid i ng damage by a i r bla s t sand ground vibrat ions frombla s t ing . Sur f ace Mi ning .
RULE ID l ASSERTS:
American In s t i t u t e o f Mining,Me t a l l u rg i ca l , and Pe t roleum
Engineers , I nc. , 196B .
4 . BUCHANAN, B.G. and SHORTLIFFE,E .H . Rule - based Expert SYstems .
Addison-Wesley Pub l i shingCom-
pany, Inc . , 1984 .
5 . RAUCH-HINDIN, W.8. Ar t i f i c i a lIn te l l igence in BusinesS,sc ience , and Industry . New Y o r ~Pr en t ice -Ha l l . Inc • . 1985 .
6 . WINSTON, P.H. and BROWN, R .H .Ar t i f i c i a l In t e l l igence: An MlT.Perspect ive , vol . 1. Cam-bridge, Mass, The MIT PReSs ,1979.
7 . GOZON, J .S. BRITTON, R.R . andFODO, J.D . predeterminingav e r age fragment s i ze: a c a ~ estudy. Soc ie ty of Mining Engl. -nee rs , Denver, Coloardo, p re pr in t , 1986 .
(INPUT <WHY> TO CHECK THE INFERENCE, <ENTER> TO CONTINUE)
188
POWDER LOAD PER DELAY SHOULD BE REDUCED.
WHYBECAUSE:
PARTICLE VELOCITY READ IS LESS THAN TWICE THE PREDICTED VALUE.
RULE 102 ASSERTS :
(INPUT <WHY> TO CHECK THE INFERENCE, <ENTER> TO CONTINUE)
REDUCE THE POWDER LOAD PER DELAY TO THE RECOMMENDED AMOUNT
WHICH IS EQUAL TO THE SQUARE OF THE SENSOR DISTANCE DIVIDEDBY 50.
RULE 106 ASSERTS:(INPUT <WHY> TO CHECK THE INFERENCE, <ENTER> TO CONTINUE)
TIME DELAY SHOULD BE USED IF APPLICABLE.
RULE IDB ASSERTS:
(INPUT <WHY> TO CHECK THE INFERENCE, <ENTER> TO CONTINUE)
SPECIFIC GRAVITY OF THE PRIMER SHOULD BE GREATER THEN 1.2 AND
DETONATION VELOCITY GREATER THAN 15000 FEET PER SEC. PRIMER
DIAMETER SHOULD ALSO BE GREATER THAN THE CRITICAL DIAMETER OF