安全连续采矿的非爆破破岩技术 毕业论文外文翻译

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1、Non-explosiveRockBreakingTechnologiesforSafeandContinuousMiningK.K.KabongoKeywords：MiningConsultant，YonkeServices(Pty)Limited，31ImpalaRoadChislehurston，Sandton，Johannesburg，RSAABSTRACT：SeveralminesinSouthAfrica(SA),likeinmanyotherpartsoftheworld,usedrillandblastasmeansofrockbreaking

2、fororeextraction.Despitecosteffectivenesshighexplosiveminingdoesnotguaranteeoptimaltotalminingcosts.Itslowenergyefficienciesandthehazardousnatureofblasting,i.e.poorsafetyrecordsespeciallyindeepmines,createaneedforintensivereseachanddevelopmentintosaferandmoreproductivetechnologies.S

3、urelymechanisedminingistheultimateoption.Manyattemptstouseheavymachinesinnarrowveindepositsatgreatdepthshavehoweverresultedindisappointment.Overthelastthreeyears,thequestfornonexplosivesbreakingtechnologieshasgainedmomentum.Theindustryisdesperatelylookingforafacesavingsystemtouplife

4、productivity,ensuresafeminingunderground,preventanddamaged-controltheimpactofthedevastatingHIV/AIDSonthefutureofmining.Propellantbasednon-explosiverockbreakingispositioningitselfsoastocapturetheopinionintheindustry.Itisconsideredamidwaybetweencheaperbutlife-threateningexplosivesandt

5、hecapitalintensiveanduncompromisingmechanisedmining.Manynon-explosiveproductsbeingtrailedintheindustry:Swartklip’sBoulder,Rocksplitter,Brandrill’sPenetrationConeFracture(PCF),NXCO’sNonexandAltex’sSafextonameafew.Allthesesystemshaveuniquemeritsandtheyallclaimdifferentlevelsofsuccessi

6、nbreakingrockundervaryingconditions,howevertheyalllacktheHerculeanpower(Cunningham2002),“theoomph”,toproperlycleanouttherockburdensconsistentlytothesatisfactionoftheindustry.Fundamentallythesesystemsappeartolackincontainingtheblastgasenergiesintherocktomatureburden第16页fracturing.Roc

7、kdustersandConmin101arethenewestproductstomakeanappearance.Theyclaimtohaveaddressedthisshortcomingwithcontept.Theystillhavetoproveinpracticaltrialswhatappearslikeanobviousedgeoverprecursors,thatcapacityofholdinggasesinblastholesforlongduration.Everthoughtheindustryexpectationofconti

8、nuousminingoperatio