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翻译部分英文原文INTRODUCTIONCHINASCOALRESERVES,THEDISTRIBUTIONOFAWIDERANGEOFCOMPLEXCONDITIONSOFOCCURRENCEANDDISTRIBUTIONOFTHE13M35MDIPBELOW25DEGREES,INTHEMIDDLEOFSTABILITYANDSTABILITYWHICHTHEFOLLOWINGCONDITIONSUNDERTHEROOFOFTHESEAM,WITHITSOUTPUTACCOUNTINGFORABOUT86OFTOTALOUTPUTCHINASOVERALLMININGFACEINTHEDISTRIBUTIONOFRELIEFTOTHEMAJORITYOFWHICHTILTSTABILITYANDTHESTABILITYWHICHTHEROOFABOVETHETHICKSEAM,ANDTHEOTHERCONDITIONSUNDERTHESEAM,THEEXISTINGHYDRAULICSUPPORTPOORADAPTABILITY,THEUSEOFTHERESULTISNOTSATISFACTORYNATIONWIDE,THECOMPLEXGEOLOGICALCONDITIONSANDTHELACKOFFUNDSANDOTHERREASONS,DESPITE10YEARSOFEFFORTS,FULLYLEVELISSTILLONLY21,WHILEFULLYDEVELOPEDCOUNTRIESABROADGENERALLEVELHASREACHED7080FROMCHINAINRECENTYEARSSUPPORTINGTHEREFORM,THEHUGEINVESTMENTOFFULLYMECHANIZEDMININGDEVELOPMENTISVERYSLOWANDTHEHYDRAULICPROPFACETHEREWASAMAJORDEVELOPMENT,ASMALLNUMBEROFMINESHASBASICALLYREALIZEDTHEHYDRAULICPROPOFCHINAFULLYMECHANIZEDHYDRAULICSUPPORTTOPROMOTETHEUSE,THEREARESTILLMANYPROBLEMSTOBESOLVED1VARIETYSERIESHYDRAULICSUPPORTSTHEREASONABLESTRUCTUREINOURCOUNTRY,THECONDITIONSAREGOODFACE,FINANCIALSTRENGTHOFTHEMININGAREABASICALLYTHEUSEOFTHEFULLYMECHANIZEDALTHOUGHSOMEOTHERMININGAREASFULLYMECHANIZED,BUTWITHTHEINTENSITYOFDEVELOPMENT,FACEINCREASINGLYWORSECONDITIONS,THESTRIKELENGTHHASBECOMEINCREASINGLYSHORTDIFFICULTMININGCOALSEAMIMBALANCEISGETTINGWORSEWITHAMINEORMINESWITHAUSEDONE,TWOTYPESOFSTENTSITDIFFICULTTOADAPTTOALLTHECOALFACEANDCONDITIONSTHEPURCHASEOFFWIDEHUGEINVESTMENTANDTECHNOLOGYISNOTNECESSARILYECONOMICALLYREASONABLE,THEMAJORITYOFSMALLANDMEDIUMSIZEDMINEFUNDINGDIFFICULTIES,BUTSOMEOFTHEEXISTINGHYDRAULICSUPPORTSAREDIFFICULTTOADAPTTOTHEMINEGEOLOGYANDPRODUCTIONTECHNOLOGYTHEABOVEANALYSISINDICATESTHATWHILECHINASCOALMINESSUPPORTINGTHELOWLEVELOFMECHANIZATION,HYDRAULICSUPPORTSANDOTHERFOODMANUFACTURERSTHEPROBLEMISNOTSUITABLEFORMOSTGEOLOGICALCONDITIONSANDTHEPRODUCTIONTECHNOLOGYSUPPORTVARIETYSERIESTAKINGAPANORAMICVIEWOFCHINASCOALMINESANDSTENTMANUFACTURERSOFTHEACTUALSITUATION,WEBELIEVETHATTHEDEVELOPMENTOFCHINASCOALMININGSUPPORTSERIESFULLYGOWITHTHESIMPLEFULLYMECHANIZED,HIGHGRADEMININGANDGENERALMININGCOMPREHENSIVEANCILLARYROAD,ATPRESENT,THEFOCUSSHOULDBEONTHEFULLYMECHANIZEDSUMMARYSUPPORTINGPRODUCTRESEARCHANDDEVELOPMENTSINCESHIFTINGHYDRAULICSTENT,TOFURTHERIMPROVETHEQUALITYOFPRODUCTS,IMPROVEFUNCTION,IMPROVINGSTRUCTURE,REDUCECOSTSANDENHANCETHEADAPTABILITYSTENTWEMUSTCONTINUETOIMPROVEANDINNOVATEUNDERSPECIALCONDITIONSFOREXPLOITATIONOFTHESPECIALSTENTFORHYDRAULICPROP,ALTHOUGHDEVELOPMENTHASBEENLAID,BUTTHEREISSTILLALOTOFPROBLEMS,MAINLYTHREEVALVECLEARANCE,HOWEVER,PILLARSOFMAINTENANCECAPACITY,HIGHFAILURERATE,SUPPORT,DEMOLITION,REMOVALOFALLMANUAL,LABORINTENSIVE；HYDRAULICPROPWITHHINGEDMETALROOFBEAMSSUPPORTINGLOWEFFICIENCYTHEREFORE,HYDRAULICPROPSHOULDALSOIMPROVEPRODUCTQUALITY,REDUCECOSTS,ANDSUPPORTINGTHEDEVELOPMENTOFANEXCLUSIVETOPBEAM,ACHIEVEPILLARSANDROOFBEAMSCOMBINEANDDOSHIFTFROMRUNNINGFOCUSONRESEARCHANDDEVELOPMENTOFWIDEADAPTATION,MOREPOWERFUL,CHEAP,SIMPLEANDFULLYSUPPORTING,SINCERANGEDFROMLARGEHYDRAULICSHIFTSTENTSANDSTENTSLIPBETWEENTHETOPBEAMOFTHELIGHTFRAME,BOTHFROMTHESHIFT,WIPINGTHETOPANDPRESSURESHIFTFUNCTION,BUTALSOWITHMONOMERSTENTSMALLSIZE,LIGHTWEIGHT,FLEXIBLEANDADAPTABLETOTHECHANGINGCHARACTERISTICS,GREATERSCOPETOADAPTTOTHEOCCURRENCEOFCOALPRODUCTIONANDTECHNOLOGICALCONDITIONSFULLYDEVELOPMENTSIMPLELIGHTHYDRAULICSUPPORTTOTHEATTRACTIONOFFOREIGNMENTIONLEGSSTENT,DOMESTICSLIDINGROOFBEAMSTENTSUCCESSONTHEBASISOFEXPERIENCE,TOOVERCOMETHEIRSHORTCOMINGS,DOSTENTLIGHTWEIGHT,RESISTANCE,LOWCOST,OVERALLFUNCTIONSANDADAPTABILITYACCORDINGTOCHINASACTUALSITUATIONINTHECOALMINE,WEBELIEVETHATTHEDEVELOPMENTOFCHINALIGHTEASYFULLYHYDRAULICSHIFTFROMTHESTENT,CANBEDIVIDEDINTOTHEFOLLOWINGTHREESTEPSFIRST,TOCONTINUETOIMPROVETHESLIDINGROOFBEAMTYPESTRUCTURE,ANDIMPROVEITSFUNCTIONFURTHEREXPANDTHESCOPEOFUSE；SECOND,THETRANSFORMATIONOFPOORUSEOFTHECRIBANDFESTIVALSTENT,ASSTRUCTURE,FMOREREASONABLEANDMOREADAPTABLETOTHESHIFTINGLIGHTFROMTHESTENT；THIRD,THEDEVELOPMENTOFMOREINNOVATIVEFUNCTIONALWHOLE,STRUCTUREANDWORKINGMETHODSMOREREASONABLENEWLIGHTSINCETHESHIFTSTENTASARESULT,THEREISAVERYCOMPLETEPORTABLEHYDRAULICSUPPORTSERIESHIGHGRADEGENERALMININGWILLBESIMPLETOFULLYMECHANIZEDMININGDEVELOPMENT,GENERALMININGTOTHEHIGHGRADEGENERALMININGTRANSITION,NOTANINCREASEININVESTMENTINTHECIRCUMSTANCES,SOTHATTHEMAJORITYOFTHEMECHANIZEDCOALMININGTOIMPROVETHEGENERALLEVELANOTCH2HYDRAULICSUPPORTSTHETECHNICALSTATUSQUOINRECENTYEARS,CHINASCOMPREHENSIVEMECHANIZATIONOFCOALMININGLEVELHASINCREASED,WITHINTEGRATEDMECHANIZEDMININGTECHNOLOGYANDTHEDEVELOPMENTOFNEWHIGHPOWERSHEARER,THECONVEYORSEMERGENCEREQUIREACORRESPONDINGSTENT,BUTTHESTENTCONTROLSYSTEMWITHOUTCORRESPONDINGIMPROVEMENTISNOTENOUGHTOMEETTHEREQUIREMENTSSOFAR,MYHOMEMADEHYDRAULICSUPPORTCONTROLREMAINEDINHANDWITHAONEWAYPLANEOCONTROLORTHECONTROLLEVELSUCHCONTROL,ALTHOUGHTHECONTROLSYSTEMISSIMPLE,EASYTOMANUFACTUREANDTHELOWERCOSTOFCOALGEOLOGICALCONDITIONSCHANGEADAPTATIONSTRONGADVANTAGES,BUTITHADSERIOUSSHORTCOMINGS①POORWORKINGCONDITIONSOFWORKERS,SECURITYISPOOR；②MOVINGVERYSLOWLY,THEIMPACTONTHEEFFICIENCYOFSHEARERTOPLAY；③VENTILATIONWASPOOR,THEHIGHFAILURERATEOFSTENT；④SUPPORTINGTHEEFFECTIVENESSOFTHEOPERATIONANDTHEEXTENTTOPLAYTHEEXPERIENCEANDSKILLSLEVELOFTHENUMBEROFCLOSELYRELATEDHYDRAULICSUPPORTTOACHIEVEAUTOMATICCONTROL,CANBEEFFECTIVELYOVERCOMETHEABOVEDRAWBACKS,ACHIEVINGTHERIGHTSTENTELECTROHYDRAULICCONTROL,ANDAVARIETYOFCONTROLOPTIONSAREAVAILABLE,OFFICERSINTHERELATIVELYSAFEPLACESFOCUSONTHEENTIREFACEOFTHESTENTREMOTECONTROLORPROCESSCONTROLNOWFOREIGNORDINARYFULLYMECHANIZEDCOALFACEHYDRAULICSUPPORTHASACHIEVEDTHECOMPUTERINFRAREDELECTROHYDRAULICCONTROL,GROUPROWSTOTHEADVANCEMENTRACKS,LIQUIDRATEDFORUPTO40MPAPRESSURELMIN300FLOW450LMINFORLIQUIDDIAMETER100MM120MMMOVINGFASTERTHANTHE10MINGROUPDOMESTICANDHYDRAULICSUPPORTSORLOWVOLTAGESOLUTIONFORSMALLDIAMETER,ARTIFICIALMANUALOPERATIONSTATISTICSACTUALSCENE,AFORWARDSUPPORTGROUPWILLTAKEABOUT1MINSUPPORTFORTHELARGESTFLUIDPRESSURENOTEXCEED32MPAFOR25MMDIAMETERBY30MM,FLOWIN150200LMINLMINTWOCOLUMNSCOVERHYDRAULICSUPPORTTHEWORKOFRESISTANCE780T,FWIDTH15M,USINGINFRAREDPM4ELECTROHYDRAULICCONTROLSYSTEM,SHEARERMICROCOMPUTERFROMTHEREMOTECONTROL,SUPPORTCOLUMNSMORETHAN400MMINDIAMETER,SPEEDSHIFTINGGROUP10MIN3FULLYDEVELOPMENTSIMPLELIGHTSTENTPROSPECTSMECHANIZEDMININGINTHECENTRALPARTOFTHESTENTISSUPPORTINGCHINASMORETHAN300EXISTINGHIGHGRADEGENERALMININGOPERATIONSANDTHEUSEOFHYDRAULICPROPBRACING,SLOW,LABORINTENSIVE,PRODUCTIONFALTERS,ANDTHEHIGHFAILURERATEOFSTENT,THEMAINTENANCECOSTISHIGHIFASMALLINVESTMENTABOUTFULLY1416,HIGHGRADEGENERALMININGFACEDEVELOPMENTASSIMPLEFULLYMECHANIZEDCOALFACESUPPORTINGINTENSITYOFTHESTENTREALIZESHIFT,ANDTOSOMEEXTENTWITHPRESSUREMOVING,FACEROOFMANAGEMENTWILLBESIGNIFICANTLYIMPROVEDYIELD,THEEFFECTIVENESSWILLBESIGNIFICANTLYENHANCEDSUMMARYOFFULLYMECHANIZEDMININGMECHANIZATIONLEVELALTHOUGHOUTPACEDLARGEFULLYMECHANIZED,BUTITSADAPTABILITYLARGER,BROADERSCOPE,INVESTMENTINHIGHGRADEGENERALMININGINCREASEDMARGINALLY,MECHANIZATIONHASINCREASEDDRAMATICALLY,SIGNIFICANTLYREDUCEDLABORINTENSITYFORSOMELARGEHYDRAULICSUPPORTITDIFFICULTTOADAPTTOTHEMININGDISTRICTANDOTHERFINANCIALDIFFICULTIESOFSMALLANDMEDIUMSIZEDMINE,THELOCALCOALMINE,FULLYEASYDEVELOPMENTISUNDOUBTEDLYENHANCEMININGMECHANIZATIONLEVELTOENHANCEECONOMICEFFICIENCYANDGUARANTEEPRODUCTIONSAFETYIMPROVETHEWORKINGCONDITIONSOFWORKERSINAWELLESTABLISHEDTECHNIQUE4CONCLUSIONAFTERNEARLY30YEARSOFDEVELOPMENTANDHARDWORK,CHINASHYDRAULICSUPPORTINTHEDESIGN,MANUFACTURELEVELHASBEENIMPROVINGESPECIALLYINTHEGENTLYINCLINEDTHICKSEAMOFHYDRAULICSUPPORTHASACCUMULATEDCONSIDERABLEEXPERIENCE,THEBASICFRAMETYPEHASBECOMEMATURE,PERFECT,INTHEVARIETYANDQUALITYWITHTHEADVANCEDINTERNATIONALLEVELGAPISGETTINGSMALLERANDSMALLERBUTTHECONTROLCOMPONENTSANDCONTROLSYSTEMSANDPRODUCTSINADVANCEDCOUNTRIESTHEREISALARGEGAPHENCEFORTH,ITSHALLCONTINUETOBEDIRECTEDAGAINSTCHINASNATIONALCONDITIONSANDSPECIFICCONDITIONSSEAM,DEVELOPINGSOMENEWTYPE,THENEWVARIETIES,ITSHOULDALSOIMPROVESTENTCONTROLSYSTEMSANDIMPROVETHERELIABILITYSTENTEFFORTREFERENCES1ZHUSHISHUNTALKABOUTTHEHYDRAULICSUPPORTVARIETYSERIESQUALIFIEDSTRUCTUREJMINEMACHINERY,19903352RONGPENGXIWENHYDRAULICSUPPORTCONTROLANDTHEPROSPECTSOFTHEDEVELOPMENTJMINEMACHINERY,199011133WITHYANGMINWANGYUEFEICOMPREHENSIVEUPTODOMESTICDEVELOPMENTANDSUPPORTINGEQUIPMENTTHOUGHTSJMINEMACHINERY,1999823
