1、翻译英文原文GasdrainagedrillingrigBritishCoalOfficeownedcoalmineintheearly1950stotheminingareaofanearbygasdrillingdrainage/andnowareverysmallcomparedtothescale/Flowintotheroadwayinthegaspressurewasgeneral-inventilationsystemruledout/Thisarticlewillintroducesomemodernminingtechnologywiththedevelopmentofthe
2、rig/Whentheincreaseincoalproduction/coalfacepromoteoptimumfast/highconcentrationofgastoberuledout/thiswillleadtomoderngasdrainagesystemdevelopment/thataregionalgasdrilling/drillingconnecttothepipelinesystem/Replytothesurfaceofgaswillbeexcluded/About40to50yearsago/theBritish-madedrillingrignotasatisf
3、actory/Britishdrillingrigequipmentcompanysdecisiontomeetthisrequirement/InrecentyearsthedesignanddevelopmentworkintheUnitedStatesDepartmentofStateCoalhelpalargenumberofstaff/consultationandcooperation/ThesuccessfuldevelopmentoftheEDECOHydrackseriesrig/therigusedforfiveyearsuntil1963theintroductionof
4、thenewdesignseriesHydrackEDECOmicro-drillingrig/Thisisnowtheuseoftherig/designedafterthereformofthereview/DrillDesignHydrackgasdrillingrigisthefirstfortheelectro-hydraulicdrillingrig/therigbeforemostoftheair-powered/Drillpipeandbitbyahydraulicmotorthroughtherotatingsix-speedgearbox；tobethrustintopow
5、erandthetripfrom815mmtoachievethehydrauliccylinders/withrackandpinionsystemtoprocesswillbecarriedouttwice/Aboutthemosttorque949Nm/awaytoabout1702mmbitontheeffectivethrustofabout2/794kg/Diameterdrillpipedesignforthe60/3mm/forthe1524mmlongwithacone-shapedmaleconnector/commonlyknownasEF/N-typedrillpipe
6、/1963/thedesignofthemicro-Hydrackrig/ThisisaveryshortperiodofQingerdrillingrig/histripto851mm/Athree-speedgearbox/thelargestofitstorqueto691Nm/effectivedrillingthrust2/145kg/Designdrillpipesmallerdiameterof41/3mm/lengthof762mm/alsowithcone-shapedmaleconnector/calledET/A-typedrillpipe/ET/A-typeandthe
7、initialET/N-typedrillpipeisthedrainageoftwostandardgasdrillingequipment/includingintheUnitedKingdomisnowNo/613/1974oftheMinistryofCoalsamples/Hydrackdrillingrigisinstalledbythegroupcomposedofstandardparts；Drill-arackwithskateboards/skateboardssupport/Bitinstalledintheslidingseat/bythehydraulicmotors
8、/Biansuchilunmeandthrustaswellassetsofcomponentsupplyrotaryjoint/Ontherack/slideunderthehydrauliccylinder/Boredendoftherack-orientedholderusedtosupportthedrillpipeandfixed/Powerequipment-whichisequippedwithahydraulicoiltank/followingaslip-ski/makesiteasytotransport/Amotorandhydraulicpumpandotherauxi
9、liaryequipment/suchasthereturntotheoilfilter/safetyvalve/andpumps/tankairwayandhumiditysafetyswitchesareinstalledinthefueltankabove/Controlpanel-thesmallestofthefourdevices/Boredfunctionsincludethecontrolvalve/pressuregaugeandtheinstructionsoftorqueonthedrillingbitpressure/Rackassembly-whentheprepar
10、ationsfordrilling/racksupportsdrillingrig/Racktoadapttoavarietyofdifferentformsofdrillingterrainchanges/H-rack/A-frameandsingle-bearingpillars/Thelattertwoarebaseddrillingriguserstotherequirementsofthedesign/Hydraulicoilthroughhydraulicflexiblehosefromthepowerplantstationtransmittedtothecontrolpanel
11、andthenintotherig/Generallonghose4m/toadapttothepositioningdevices/GasDrainageCoalmining/willcausegasfromcoalminingandcoalminingneighbouringnotXiechu/IntheUnitedKingdominthemine/gasoutburst100yearsofhistory/Gasoutburstbeanexplosivemixture/thelackofoxygen/orthetopendofthedramaticmovement/anddangerous
12、situation/Inmine/nowcontrolthegasistoplaywithcoalgasdrainagedrilling/drillingintothetunnelrooforfloorseam/Boredareconnectedtoeachpipelinesystem(knownasthesteeltubeinsertedintotheboreholeductsandrisers)/withgaspumpswillbeoutoftheground/Individualpumpinggasdrillingpure放量consecutivemonthscanbeashighas2
13、00feet3/min/Mostoftheuseoftungstencarbideortherotatingconedrillbitbored/DesignconsiderationsMostoftheprojectsaredesignedwithacompromiseonanissueofgeneralthereareanumberofanswers/butnooneistheidealanswer/Designofgasdrainagedrillingrigshouldconsidertheparameters/Asacompletedrilling/drillingrigsneedtom
14、ovetoanewlocation/Soshouldtheweightofthelightestrig/Whenthedrillingriginthemineatthetimeofinstallationintheroadwayshouldbeleftasmanyaspossibletofacilitatetheworkofthespaceandequipmenttouse/Minemechanicalstructuremustbestrong/Inpreparationforthedesign/considerationshouldbegiventotheundergroundharshen
15、vironment(fromaminecaronthemachinetofalltowithstandit)Reliabilityandeasymaintenanceisveryimportant/DownholedrillingrigmustadheretotheuseoflegislativeandpracticalrequirementsoftheAct/DesignreformHydrackrigonthedesignofmicro-reformneedscarefulconsideration/thedesignofreformwillhaveinterchangeableparts
16、oftheproblem/oftenincreasethescopeofsparepartsmustbesaved/Someofthefactorydesignreformisinevitableiftheuseofmetricandforsecurityreasonsmandatoryrequirements/Whenthesereformsarenecessary/otherdesirabletoimprovethedesignadoptedatthesametime/Hydrackmicro-drillingriginthedesignofreformareasfollows/Serie
17、s-1963inOctorberwasintroduced/thereplacementoftheaforementionedriginthefirstseriesHydracklargerdrillingrig/Series-1966inAugusttoimprovethepowerplantappearance/installtemperatureandlevelswitch/increasingpressurefordrilling4/318kg/SeriesFRinJune/1968/beforetheuseofhydraulicmineraloilrig/nowswitchtoliq
18、uidfire/SeriesFRAinApril/1974/tofurtherimprovetheuseofhydraulicsystemsandoil-wateremulsionmixedwiththewatersupplyregulationsealedrotaryjoints/morereliableoperation/MetricseriesFRA-1975/inDecembersince1963/althoughtheuseofmetricsizebearingsandseals/buttothebestmetricscrewconnectorandtheSteelpieces/Im
19、proveduseofthedrillpipeTemple-orientedfolder/MetricseriesFRA-1976/NovemberHydrackusingmicro-drillingrig/Drillawayasto451mm/longdrillpipe380mm/single-speeddrill/UsedbypowerplantsandHydrackandthesame/MetricseriesFRAinJanuary/1978/thepowerplantdesignandmadeabigchangeintheBritishMinistryofCoalCFS/MEA(74
20、)20documentrequest/ImportantchangeistocontrolthediskGaixiao/reduceexternalpipelinework/Thesedevicescanbeusedseparately/orcontroldevicewasattachedtotheforce/MakeCreateahighstandardofreliablerigmust/inaccordancewithpre-setqualitystandardprocessing/Maintainhighstandards/qualityisthekey/allthepersonneli
21、nvolvedintheproductionoftheneedtoensureproductionqualityandreliablecomponents/Providesgraphicsstandards/theneedforrealistic/Identifymaterials/machinerymanufacturingtolerances/surfacefinishsuchasstandards/theneedforcarefulstudy/Inordertoensurethereliabilityoftheuseofdrillingrigsinthedelivery/eachdril
22、lingrigtobearoutinetest/EDECOconductedbythedrillingrigtothefulltestresultsaremadepermanentrecords/Gas-DrillingAboredtunnel(usuallyinthebacktothewindtunnel)sectionofverydifferentsizes/Inadvance-longwallface/atripforthe851mmmicro-Hydrackrig/Ingeneralahighdegreeofroadwayfor1/5m-longwallofthebackandface
23、withsimilarconditions/maybetheitineraryforthe451mmmicro-Hydrackrig/Drillingrigandequipmentatthesceneassembly/theassemblyrigandtoclampfirmlyfixed/whenthedrillingforcetopreventthemobiledrillingrig/Boredbythepressurechangedependingontheboreholedrillingstyle/WCformationmaybeageneralairfoilbitbored/Thisb
24、itoftorque/andthedrillingoflowpressure/Whendrillingahardformation/theuseofconeJingangbit/Itscharacteristicsaresmalltorque/drillingpressure/Gasdrainagedrillingholesbeforedrillingalargehole/adiameterof115mmor89mm/withductsandrisersdependsontheaperture/depthof10and20m/upabout45drillingholesinthemininga
25、reasonornotthesameAngleatthebottomholedrillingdown/BoredlayoutandKongjudeterminedbythetest/becauseofdifferentpositionsandchanges/Sealedwithrubber/cementgrouting/tapeorcompactsealingresinductsandriserswillbefixedinthehole/usinga76mmscrewtothevalveandfillinboxesfixedontheductsandrisers/exportpackingbo
26、xeswithanothervalve/gasandwatercontroldevice/Ifnecessary/removethegasdrainagesafetydrillpipeanddrillbitused/Drillpipeanddrillthroughthelargervalvecanactuallydrillholes50mmgasproduction/thedepthof40到60m/CirculatingpumppumpingthroughthecentertothedrillpipeBits/coolingbitsandwashedoutholechip/Pumpdrillingequipmentisaveryimportantpart/Whenthebitbeforedrillingstarted/thewatercycleshouldalwaysbetodrill/otherwise/will
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