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翻译英文原文GasdrainagedrillingrigBritishCoalOfficeownedcoalmineintheearly1950stotheminingareaofanearbygasdrillingdrainage,andnowareverysmallcomparedtothescale.Flowintotheroadwayinthegaspressurewasgeneralinventilationsystemruledout.Thisarticlewillintroducesomemodernminingtechnologywiththedevelopmentoftherig.Whentheincreaseincoalproduction,coalfacepromoteoptimumfast,highconcentrationofgastoberuledout,thiswillleadtomoderngasdrainagesystemdevelopment,thataregionalgasdrilling,drillingconnecttothepipelinesystem,Replytothesurfaceofgaswillbeexcluded.About40to50yearsago,theBritishmadedrillingrignotasatisfactory.Britishdrillingrigequipmentcompanysdecisiontomeetthisrequirement.InrecentyearsthedesignanddevelopmentworkintheUnitedStatesDepartmentofStateCoalhelpalargenumberofstaff,consultationandcooperation.ThesuccessfuldevelopmentoftheEDECOHydrackseriesⅠrig,therigusedforfiveyearsuntil1963theintroductionofthenewdesignseriesⅠHydrackEDECOmicrodrillingrig.Thisisnowtheuseoftherig,designedafterthereformofthereview.DrillDesignHydrackgasdrillingrigisthefirstfortheelectrohydraulicdrillingrig,therigbeforemostoftheairpowered.Drillpipeandbitbyahydraulicmotorthroughtherotatingsixspeedgearboxtobethrustintopowerandthetripfrom815mmtoachievethehydrauliccylinders,withrackandpinionsystemtoprocesswillbecarriedouttwice.Aboutthemosttorque949Nm,awaytoabout1702mmbitontheeffectivethrustofabout2,794kg.Diameterdrillpipedesignforthe60.3mm,forthe1524mmlongwithaconeshapedmaleconnector,commonlyknownasEF/Ntypedrillpipe.1963,thedesignofthemicroHydrackrig.ThisisaveryshortperiodofQingerdrillingrig,histripto851mm.Athreespeedgearbox,thelargestofitstorqueto691Nm,effectivedrillingthrust2,145kg.Designdrillpipesmallerdiameterof41.3mm,lengthof762mm,alsowithconeshapedmaleconnector,calledET/Atypedrillpipe.ET/AtypeandtheinitialET/Ntypedrillpipeisthedrainageoftwostandardgasdrillingequipment,includingintheUnitedKingdomisnowNo.613/1974oftheMinistryofCoalsamples.HydrackdrillingrigisinstalledbythegroupcomposedofstandardpartsDrillarackwithskateboards,skateboardssupport.Bitinstalledintheslidingseat,bythehydraulicmotors,Biansuchilunmeandthrustaswellassetsofcomponentsupplyrotaryjoint.Ontherack,slideunderthehydrauliccylinder.Boredendoftherackorientedholderusedtosupportthedrillpipeandfixed.Powerequipmentwhichisequippedwithahydraulicoiltank,followingaslipski,makesiteasytotransport.Amotorandhydraulicpumpandotherauxiliaryequipment,suchasthereturntotheoilfilter,safetyvalve,andpumps,tankairwayandhumiditysafetyswitchesareinstalledinthefueltankabove.Controlpanelthesmallestofthefourdevices.Boredfunctionsincludethecontrolvalve,pressuregaugeandtheinstructionsoftorqueonthedrillingbitpressure.Rackassemblywhenthepreparationsfordrilling,racksupportsdrillingrig.Racktoadapttoavarietyofdifferentformsofdrillingterrainchanges,Hrack,Aframeandsinglebearingpillars.Thelattertwoarebaseddrillingriguserstotherequirementsofthedesign.Hydraulicoilthroughhydraulicflexiblehosefromthepowerplantstationtransmittedtothecontrolpanelandthenintotherig.Generallonghose4m,toadapttothepositioningdevices.GasDrainageCoalmining,willcausegasfromcoalminingandcoalminingneighbouringnotXiechu.IntheUnitedKingdominthemine,gasoutburst100yearsofhistory.Gasoutburstbeanexplosivemixture,thelackofoxygen,orthetopendofthedramaticmovement,anddangeroussituation.Inmine,nowcontrolthegasistoplaywithcoalgasdrainagedrilling,drillingintothetunnelrooforfloorseam.Boredareconnectedtoeachpipelinesystemknownasthesteeltubeinsertedintotheboreholeductsandrisers,withgaspumpswillbeoutoftheground.Individualpumpinggasdrillingpure放量consecutivemonthscanbeashighas200feet3/min.Mostoftheuseoftungstencarbideortherotatingconedrillbitbored.DesignconsiderationsMostoftheprojectsaredesignedwithacompromiseonanissueofgeneralthereareanumberofanswers,butnooneistheidealanswer.DesignofgasdrainagedrillingrigshouldconsidertheparametersAsacompletedrilling,drillingrigsneedtomovetoanewlocation.Soshouldtheweightofthelightestrig.Whenthedrillingriginthemineatthetimeofinstallationintheroadwayshouldbeleftasmanyaspossibletofacilitatetheworkofthespaceandequipmenttouse.Minemechanicalstructuremustbestrong.Inpreparationforthedesign,considerationshouldbegiventotheundergroundharshenvironmentfromaminecaronthemachinetofalltowithstandit»Reliabilityandeasymaintenanceisveryimportant.DownholedrillingrigmustadheretotheuseoflegislativeandpracticalrequirementsoftheAct.DesignreformHydrackrigonthedesignofmicroreformneedscarefulconsideration,thedesignofreformwillhaveinterchangeablepartsoftheproblem,oftenincreasethescopeofsparepartsmustbesaved.Someofthefactorydesignreformisinevitableiftheuseofmetricandforsecurityreasonsmandatoryrequirements.Whenthesereformsarenecessary,otherdesirabletoimprovethedesignadoptedatthesametime.HydrackmicrodrillingriginthedesignofreformareasfollowsSeriesⅠ1963inOctorberwasintroduced,thereplacementoftheaforementionedriginthefirstseriesⅠHydracklargerdrillingrig.SeriesⅡ1966inAugusttoimprovethepowerplantappearance,installtemperatureandlevelswitch,increasingpressurefordrilling4,318kg.SeriesFR–inJune,1968,beforetheuseofhydraulicmineraloilrig,nowswitchtoliquidfire.SeriesFRA–inApril,1974,tofurtherimprovetheuseofhydraulicsystemsandoilwateremulsionmixedwiththewatersupplyregulationsealedrotaryjoints,morereliableoperation.MetricseriesFRA1975,inDecembersince1963,althoughtheuseofmetricsizebearingsandseals,buttothebestmetricscrewconnectorandtheSteelpieces.ImproveduseofthedrillpipeTempleorientedfolder.MetricseriesFRA1976,NovemberHydrackusingmicrodrillingrig.Drillawayasto451mm,longdrillpipe380mm,singlespeeddrill.UsedbypowerplantsandHydrackandthesame.MetricseriesFRA–inJanuary,1978,thepowerplantdesignandmadeabigchangeintheBritishMinistryofCoalCFS/MEA7420documentrequest.ImportantchangeistocontrolthediskGaixiao,reduceexternalpipelinework.Thesedevicescanbeusedseparately,orcontroldevicewasattachedtotheforce.MakeCreateahighstandardofreliablerigmust,inaccordancewithpresetqualitystandardprocessing.Maintainhighstandards,qualityisthekey,allthepersonnelinvolvedintheproductionoftheneedtoensureproductionqualityandreliablecomponents.Providesgraphicsstandards,theneedforrealistic.Identifymaterials,machinerymanufacturingtolerances,surfacefinishsuchasstandards,theneedforcarefulstudy.Inordertoensurethereliabilityoftheuseofdrillingrigsinthedelivery,eachdrillingrigtobearoutinetest.EDECOconductedbythedrillingrigtothefulltestresultsaremadepermanentrecords.GasDrillingAboredtunnelusuallyinthebacktothewindtunnelsectionofverydifferentsizes.Inadvancelongwallface,atripforthe851mmmicroHydrackrig.Ingeneralahighdegreeofroadwayfor1.5mlongwallofthebackandfacewithsimilarconditions,maybetheitineraryforthe451mmmicroHydrackrig.Drillingrigandequipmentatthesceneassembly,theassemblyrigandtoclampfirmlyfixed,whenthedrillingforcetopreventthemobiledrillingrig.Boredbythepressurechangedependingontheboreholedrillingstyle.WCformationmaybeageneralairfoilbitbored.Thisbitoftorque,andthedrillingoflowpressure.Whendrillingahardformation,theuseofconeJingangbit.Itscharacteristicsaresmalltorque,drillingpressure.Gasdrainagedrillingholesbeforedrillingalargehole,adiameterof115mmor89mm,withductsandrisersdependsontheaperture,depthof10and20m,upabout45°drillingholesintheminingareasonornotthesameAngleatthebottomholedrillingdown.BoredlayoutandKongjudeterminedbythetest,becauseofdifferentpositionsandchanges.Sealedwithrubber,cementgrouting,tapeorcompactsealingresinductsandriserswillbefixedinthehole,usinga76mmscrewtothevalveandfillinboxesfixedontheductsandrisers,exportpackingboxeswithanothervalve,gasandwatercontroldevice,Ifnecessary,removethegasdrainagesafetydrillpipeanddrillbitused.Drillpipeanddrillthroughthelargervalvecanactuallydrillholes50mmgasproduction,thedepthof40到60m.CirculatingpumppumpingthroughthecentertothedrillpipeBits,coolingbitsandwashedoutholechip.Pumpdrillingequipmentisaveryimportantpart.Whenthebitbeforedrillingstarted,thewatercycleshouldalwaysbetodrill,otherwise,will
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