外文翻譯--瓦斯抽放鉆機(jī).doc

翻譯英文原文GasdrainagedrillingrigBritishCoalOfficeownedcoalmineintheearly1950stotheminingareaofanearbygasdrillingdrainage,andnowareverysmallcomparedtothescale.Flowintotheroadwayinthegaspressurewasgeneral-inventilationsystemruledout.Thisarticlewillintroducesomemodernminingtechnologywiththedevelopmentoftherig.Whentheincreaseincoalproduction,coalfacepromoteoptimumfast,highconcentrationofgastoberuledout,thiswillleadtomoderngasdrainagesystemdevelopment,thataregionalgasdrilling,drillingconnecttothepipelinesystem,Replytothesurfaceofgaswillbeexcluded.About40to50yearsago,theBritish-madedrillingrignotasatisfactory.Britishdrillingrigequipmentcompanysdecisiontomeetthisrequirement.InrecentyearsthedesignanddevelopmentworkintheUnitedStatesDepartmentofStateCoalhelpalargenumberofstaff,consultationandcooperation.ThesuccessfuldevelopmentoftheEDECOHydrackseriesrig,therigusedforfiveyearsuntil1963theintroductionofthenewdesignseriesHydrackEDECOmicro-drillingrig.Thisisnowtheuseoftherig,designedafterthereformofthereview.DrillDesignHydrackgasdrillingrigisthefirstfortheelectro-hydraulicdrillingrig,therigbeforemostoftheair-powered.Drillpipeandbitbyahydraulicmotorthroughtherotatingsix-speedgearbox；tobethrustintopowerandthetripfrom815mmtoachievethehydrauliccylinders,withrackandpinionsystemtoprocesswillbecarriedouttwice.Aboutthemosttorque949Nm,awaytoabout1702mmbitontheeffectivethrustofabout2,794kg.Diameterdrillpipedesignforthe60.3mm,forthe1524mmlongwithacone-shapedmaleconnector,commonlyknownasEF/N-typedrillpipe.1963,thedesignofthemicro-Hydrackrig.ThisisaveryshortperiodofQingerdrillingrig,histripto851mm.Athree-speedgearbox,thelargestofitstorqueto691Nm,effectivedrillingthrust2,145kg.Designdrillpipesmallerdiameterof41.3mm,lengthof762mm,alsowithcone-shapedmaleconnector,calledET/A-typedrillpipe.ET/A-typeandtheinitialET/N-typedrillpipeisthedrainageoftwostandardgasdrillingequipment,includingintheUnitedKingdomisnowNo.613/1974oftheMinistryofCoalsamples.Hydrackdrillingrigisinstalledbythegroupcomposedofstandardparts；Drill-arackwithskateboards,skateboardssupport.Bitinstalledintheslidingseat,bythehydraulicmotors,Biansuchilunmeandthrustaswellassetsofcomponentsupplyrotaryjoint.Ontherack,slideunderthehydrauliccylinder.Boredendoftherack-orientedholderusedtosupportthedrillpipeandfixed.Powerequipment-whichisequippedwithahydraulicoiltank,followingaslip-ski,makesiteasytotransport.Amotorandhydraulicpumpandotherauxiliaryequipment,suchasthereturntotheoilfilter,safetyvalve,andpumps,tankairwayandhumiditysafetyswitchesareinstalledinthefueltankabove.Controlpanel-thesmallestofthefourdevices.Boredfunctionsincludethecontrolvalve,pressuregaugeandtheinstructionsoftorqueonthedrillingbitpressure.Rackassembly-whenthepreparationsfordrilling,racksupportsdrillingrig.Racktoadapttoavarietyofdifferentformsofdrillingterrainchanges,H-rack,A-frameandsingle-bearingpillars.Thelattertwoarebaseddrillingriguserstotherequirementsofthedesign.Hydraulicoilthroughhydraulicflexiblehosefromthepowerplantstationtransmittedtothecontrolpanelandthenintotherig.Generallonghose4m,toadapttothepositioningdevices.GasDrainageCoalmining,willcausegasfromcoalminingandcoalminingneighbouringnotXiechu.IntheUnitedKingdominthemine,gasoutburst100yearsofhistory.Gasoutburstbeanexplosivemixture,thelackofoxygen,orthetopendofthedramaticmovement,anddangeroussituation.Inmine,nowcontrolthegasistoplaywithcoalgasdrainagedrilling,drillingintothetunnelrooforfloorseam.Boredareconnectedtoeachpipelinesystem(knownasthesteeltubeinsertedintotheboreholeductsandrisers),withgaspumpswillbeoutoftheground.Individualpumpinggasdrillingpure放量consecutivemonthscanbeashighas200feet3/min.Mostoftheuseoftungstencarbideortherotatingconedrillbitbored.DesignconsiderationsMostoftheprojectsaredesignedwithacompromiseonanissueofgeneralthereareanumberofanswers,butnooneistheidealanswer.Designofgasdrainagedrillingrigshouldconsidertheparameters:Asacompletedrilling,drillingrigsneedtomovetoanewlocation.Soshouldtheweightofthelightestrig.Whenthedrillingriginthemineatthetimeofinstallationintheroadwayshouldbeleftasmanyaspossibletofacilitatetheworkofthespaceandequipmenttouse.Minemechanicalstructuremustbestrong.Inpreparationforthedesign,considerationshouldbegiventotheundergroundharshenvironment(fromaminecaronthemachinetofalltowithstandit)Reliabilityandeasymaintenanceisveryimportant.DownholedrillingrigmustadheretotheuseoflegislativeandpracticalrequirementsoftheAct.DesignreformHydrackrigonthedesignofmicro-reformneedscarefulconsideration,thedesignofreformwillhaveinterchangeablepartsoftheproblem,oftenincreasethescopeofsparepartsmustbesaved.Someofthefactorydesignreformisinevitableiftheuseofmetricandforsecurityreasonsmandatoryrequirements.Whenthesereformsarenecessary,otherdesirabletoimprovethedesignadoptedatthesametime.Hydrackmicro-drillingriginthedesignofreformareasfollows:Series-1963inOctorberwasintroduced,thereplacementoftheaforementionedriginthefirstseriesHydracklargerdrillingrig.Series-1966inAugusttoimprovethepowerplantappearance,installtemperatureandlevelswitch,increasingpressurefordrilling4,318kg.SeriesFRinJune,1968,beforetheuseofhydraulicmineraloilrig,nowswitchtoliquidfire.SeriesFRAinApril,1974,tofurtherimprovetheuseofhydraulicsystemsandoil-wateremulsionmixedwiththewatersupplyregulationsealedrotaryjoints,morereliableoperation.MetricseriesFRA-1975,inDecembersince1963,althoughtheuseofmetricsizebearingsandseals,buttothebestmetricscrewconnectorandtheSteelpieces.ImproveduseofthedrillpipeTemple-orientedfolder.MetricseriesFRA-1976,NovemberHydrackusingmicro-drillingrig.Drillawayasto451mm,longdrillpipe380mm,single-speeddrill.UsedbypowerplantsandHydrackandthesame.MetricseriesFRAinJanuary,1978,thepowerplantdesignandmadeabigchangeintheBritishMinistryofCoalCFS/MEA(74)20documentrequest.ImportantchangeistocontrolthediskGaixiao,reduceexternalpipelinework.Thesedevicescanbeusedseparately,orcontroldevicewasattachedtotheforce.MakeCreateahighstandardofreliablerigmust,inaccordancewithpre-setqualitystandardprocessing.Maintainhighstandards,qualityisthekey,allthepersonnelinvolvedintheproductionoftheneedtoensureproductionqualityandreliablecomponents.Providesgraphicsstandards,theneedforrealistic.Identifymaterials,machinerymanufacturingtolerances,surfacefinishsuchasstandards,theneedforcarefulstudy.Inordertoensurethereliabilityoftheuseofdrillingrigsinthedelivery,eachdrillingrigtobearoutinetest.EDECOconductedbythedrillingrigtothefulltestresultsaremadepermanentrecords.Gas-DrillingAboredtunnel(usuallyinthebacktothewindtunnel)sectionofverydifferentsizes.Inadvance-longwallface,atripforthe851mmmicro-Hydrackrig.Ingeneralahighdegreeofroadwayfor1.5m-longwallofthebackandfacewithsimilarconditions,maybetheitineraryforthe451mmmicro-Hydrackrig.Drillingrigandequipmentatthesceneassembly,theassemblyrigandtoclampfirmlyfixed,whenthedrillingforcetopreventthemobiledrillingrig.Boredbythepressurechangedependingontheboreholedrillingstyle.WCformationmaybeageneralairfoilbitbored.Thisbitoftorque,andthedrillingoflowpressure.Whendrillingahardformation,theuseofconeJingangbit.Itscharacteristicsaresmalltorque,drillingpressure.Gasdrainagedrillingholesbeforedrillingalargehole,adiameterof115mmor89mm,withductsand