外文翻译综采放顶煤瓦斯涌出的特点及防治.docx

外文翻译综采放顶煤瓦斯涌出的特点及防治.docx

《外文翻译综采放顶煤瓦斯涌出的特点及防治.docx》由会员分享，可在线阅读，更多相关《外文翻译综采放顶煤瓦斯涌出的特点及防治.docx（7页珍藏版）》请在冰豆网上搜索。

外文翻译综采放顶煤瓦斯涌出的特点及防治

外文翻译一综采放顶煤瓦斯涌出的特点及防治

中文2180字

英文原文

TheFeaturesandPreventionoftheGasPouringfromthe

BreakingCoal-bedoftheComprehensivelyMechanized

MiningFace

ZhaoJunhu

Abstract:

Throughanalyzingthefeaturesofthegas-pouringfromthecomprehensivelymechanizedminingface,thispaperadvancessomemethodsformakingcomprehensivetreatmentofthegastoensurethesafetyintheproduction.

Keywords:

gas-pouring；comprehensivelymechanizedcoalmining；coalminesafety.

Cavinginthickcoalseamminingwidelyusedintheminingmethod.Afterseveralyearspracticeandtheexploration,appliedthisminingcoalmethodtobringtheremarkableeconomicefficiency.SImultaneouslyminesthetechnologyalsograduallytoconsummate,putsthecoalthicknesstoreach15m.Thepeculiarcircumstancehassurpassed20in.Somesynthesessetfreeacapturedanimalproduceabilitytoachieveabove2,000,000t/a.Butalongwiththeminingtechnologydevelopmentandtheapplicationscopeunceasingexpansion,thesynthesispickedputsgoesagainstthecoalalsotobringaseriesoftechnicalquestionunderthespecificconditionJfminesintheeasyignitionhighmethanecoalbedthefireprotection,dustproof,toguardagainstquestionsandsoongas.

1synthesisletsloosepicksthegastogushoutthecharacteristic

synthesistoletloosepicksisdifferentwithotherlaminationmining,itsworkingsurfaceandthecoalbedrelativepositionhashadthechange,isalongledgerwallmining.Thecommonaroundtwoconveyertransportation^onetimepicksbig,productivityisbig,upsidethebrokenpulverizedcoalbodyismobiletothesupportwindow,isbravedtherooftofallthefunctiontoputthecoaltobenon-uniform,facilitatesthegastogushoutalsonon-uniform.Addedthefireprotectionnotenitrogeninfluence,thecausesynthesisletsloosepicksthegastogushoutthequestiontoappearthenewcharacteristic^becameaffectstheworkingsurfaceperunitareayieldtheimportantattribute,simultaneouslygavethesafetyinproductiontobringthenewquestion.Becausethesynthesisputsisalongledgerwallmining,itsgasoriginatesisdifferentwithgenerallaminationinining.Generallaminationminingisgoesagainstminingalongtherooforthevacation,thegasoriginatesmainlyisthecoalbodywhichtheworkingsurfacecoalwallandshearsfalls.Thenextlaminationgasgushesoutaquantitylaminationtocomparereduces2-4time.Butthesynthesisletsloosepicksthegastooriginateaminutetwomajorpart:

Apartcomesfromtheworkingsurfacecoalwallandpicksfallsthecoalbody,moreoverthemajoritycomesfromtheworkingsurfacesupportplaceabove.Indlcatedaccordingtothegasmaterial.Thecoalwallandpicksfallsthecoalbodythegastogushoutthequantityonlytoaccountfor25%.Otherareabovethesupportthecoalbodyproduces.Whencoalminingmachinecoalcuttingthecoalwallexposesunceasinglyfront,putsdownworkinadvanceinthestressfunctionis10-15mstressGaoZhiquinthescopecoalbodycrevassetoincrease.Thegasstateofequilibriumreceivesthedestruction,thecoalbodypermeabilityincreases,thegasinrushesalongthereleaseofpressurebeltcrevassetotheworkingsurface.MoreoverscattersthecoalbodyIncreasedthegastoemitthespeedtocausethegasquantitytoincrease,whenthegasgushedoutthequantityexposedalongwiththecoalwalltoaskthegrowthreduces.Abovethesupportthecoalbodythecoalcutting,moves,putstechnologicalprocessandsoonincoalpressurevariationinfluences,causesittobedestructed^themassiveadsorptiongastransformsthedissociationgas,becauseitsproportionislight.Createspicksthedepletionregionmassivegastoaccumulate（dischargesworkingsurfacebesidesfewpartsfromwindow）.Moreover,bravesinthehorizontalincludedangle60°scopetofallinthebelt,becausetheroofbravestofall,thedistortioncausestheneighbouringareagastogushoutcausestopickthegasincreasewhichthedepletionregionaccumulates.

2gasgushoutinthetimeandthespatialparticularity

2.1letlooseinthetime

particularsynthesispickthegastogushoutinthetimearedifferentwithothermethodofexploitation,hasitsuniqueperformance:

First,whenworkingsurfacecoalcuttingthegasreleasesapart.Second,thewindowputswhenthecoalthemassivegasgushout.Whenthird,thewindowputsatthesametimethecoalandthecoalcuttingthework,thegasgushesoutmassively.Thisisthegasagglomeratesthemostdangeroustime.

2.2gasspatialdistributioncharacteristicsseethechart

lowgasarea（IArea）.Thisareaventilatesgood,thegaseasytodischarge,thecrosssectionisbig,（supportshieldtypesupport）,theamountofwindaccountsforthetotalamountofwind241%,thegasdensityisthelowgasarea.

Gasincreasearea（HArea）.Thisareaislocatedentirechuteandmachinebetween.Becausethecrosssectionchangessmall,theamountofwindaccountsforthetotalamountofwind136%,thelooseresistanceisbig,wasInferiorwellventilatedIareaisgood,gasquantityincrease.

Highgasarea（mArea）.Thisareaforbehindchutespace,becausethechutekeptoffthecoalboardtooccupycertainspace,putwhenthecoalputdownthecoalhasoccupiedcertainspace,createdthecrosssectiontobesmall,theresistancewasbig.Theamountofwindaccountsforthetotalquantity8%・10%,alsothisareaisapartfromthehardgangtobefar,createsventilatesthedifficulty,likethisputswhenthecoalthegasgushesoutmassivelyformsthehighgasarea,namelygaswarningarea.

Gasagglomerationarea.Thlsareaislocatedputsabovethecoalwindow,themassivegascannotdischarge,formsthegasagglomerationarea,alsoisthewarningarea.

3synthesesletloosepickthegasexplosionfactor

3.1gasdistribution

followingcharttoshow,theentireworkingsurfacebesidesputsthecoalmouth,thegasdischargesbasicallyunderthenormalloosedilution,itsgasquantitydoesnotsurpassl%.Butonputsthecoalmouth,putsabovethecoalmouthtopicklowerpartonthedepletionregion,theairreturnwaythesolidanglegoesagainsthigh,theseplacegasvolumescoreis3%—15%,basicallyindetonationboundary（5%一16%）,Andhasventilatesfortheoxygencondition,hasexteriorfirehazardpossiblytocauseexplodes.Distributesinpicksonthedepletionregionthemassivegasagglomerationnottobeabletodischarge,thevolumescoresurpasses20%.Inordertopreventthecoalbedspontaneouscombustionignition,thesynthesisletsloosepickstopicksthedepletionregionnotenitrogentoreducetheoxygencontentisonekindofeffectivefireprecautions,butbecausethenotenitrogencausesthegastoassumethebarotropicstate,theforcepicksthedepletionregionapartofgasoutflow,alsocreatesthegastogushoutthequantitytoIncrease.

3.2causedthegasexplosiondetachmentcondition

tohavethegasaccumulation,itsdensityachievedthedetonationboundary,hadundertheexternalfactorfirehazardconditionthentohavethegasexplosionagain.Fromactualsituationanalysis.Causesthegasexplosionconditiontoinclude:

Theelectricitydoesnotguardagainstexplosionsproducesthesparktocausethegasexplosion-Picksthedepletionregionignitionassociatedgasexplosion；Thebulkrockbravestofallproducesthesparkwiththesupportcollisiontocausethedetonation；Putsthecoalwindowtofireagunprocessesthebiglumpcoalbodytobepossibletocausethedetonation；Thecoalbodyhigh-temperatureoxidationcausesthedetonation；Movesatimesupporttorubeasilytocausethegasexplosion.

4synthesesletloosethegaswhichpickstopreventandcontrol

4Jtopulloutputprimarilyeffectapermanentcurethemeasure

regardingthegascontentbigcoalbed,adoptsthemethodwhichextractsthegastoenablethegasdensitytoachievetheminingrequest,extractsthemeanstohaveinadvancepullsoutaheadoftimewithpickswhilepullsouttwokinds.

4.21safterfirstupscaleandthesynthesispicksthesynthesistoletloosepicks

Afterpullsoutputscouldnotachievetheminingrequestthecoalbed,mustfirstpickortheupscalemethodalongtheroofwiththesynthesismines2・3,carriesonthesynthesisaftertheminingliberationlevelreleasegastoputagain.

4.3deliverstheroofgaslaneorthespecialgastaillane

inpicksbehindthedepletionregiontodigthespecialgastaillane.Behindworkingsurfaceadvanceminingcoalpullsoutarowofgas,likethispicksthedepletionregiongastodischargebythebehindtaillane,ordigsalongtheroofdeliversthegaslane,each50mdigsdeliverstherillandtheairreturnwayisinterlinkedthereleasegas.

4.4high-pressurewaterfloodconditioningcoalbedemissionsgas

carriesonthehigh-pressurewaterfloodinthecoalbed,notonlycansoftenthecoalbody,reducethedust,moreovercandischargethecoalbedJointingcrevasseinpartialgas,reducesthecoaldustgascontent,simultaneouslyplaysthetemperaturedecrease,increasesthehumiditytherole,noteasytocausetheignition,maypreventthegasaccident.

4.5adjuststhegasfromtheoperationcrafttogushoutthequantity

controltoputthecoalmouthtoputthecoal,doesnotcausetoputthecoalamountoversized,onetimeputsthecoaltimenottowanttogrow,dividesputsmanytimes,hasthelimitcontrolgastogushoutthequantity.Thecoalcuttingputsthecoalnottohavesimultaneouslythework,preventedthegassuperimpositiongushesout.Cleansupbehindbetweenthechuteracktofloatthecoal,increasesthecrosssection,reducestheresistance,guaranteeslooselyunimpeded.Specialplace（forexampleonsolidangle）availablebureaufanemissionsgas.Mayadoptlaminationminingregarding