采煤工作面的顶板管理问题探讨中英文翻译、外文文献翻译、外文翻译

AdoptthecrestofthecoalworknoodlesplankmanagementproblemstudyCresttheplankmanagementisthepointthatadoptsasafemanagementofthecoalworknoodles.Statisticsaccordingtothedata,cresttheplanktroublehas60%ofthecoalminetroubleabout,adoptingthetroubleofthecoalworknoodlesandhavingacrest70%oftheplanktroubleabove.Therefore,wehavetostrengthenaplankmanagement,reducingtoadoptthecoalworknoodlescresttheoccurrenceoftheplanktrouble.1,thedefinitionofthecrest,scaleboardanditcategorizeEndowwiththeexistencecoalseamonoftheclosebyrockstratabecalledaplank,endowwiththeexistencecoalseamunderoftheclosebyrockstratabecalledscaleboard.Cresttherock,strengthofthescaleboardandabsorbwatersexanddiggingtoworkthemanagementofthenoodlescontaindirectrelation,theyiscertaincresttheplankprotectawayandchoosetoadopttheemptyareaprocessingmethodofmainbasis.1.1plankscategorizeAccordingtorock,thicknessandreturntoadoptprocesstofallinthe垮ofdifficulteasydegree,cresttheplankisdividedintothefalsecrest,directcrestandoldcrest.Accordingtodirectcrestsporttoadoptafieldtotheinfluenceforpress,thedirectcrestisdividedintobrokenup,unsteady,mediumetc.stability,stability,strongandtoughcrestplanketc.isfive.AccordingtooldcrestthesportBeworkmineralinsidethenoodlespresstopresentdegreeandtoworksafethreatofnoodlesofsize,theoldcrestisisdividedintopressveryandseverely,pressmightiness,presstocompareobviously,don'tobviouslypressetc.isfour.1.2scaleboardscategorizeAccordingtotheoppositepositionrelationoftherockstrataandthecoalseam,thescaleboardisdividedintodirectbottomwiththeoldbottom.Locatecoalseamdirectlyunderoftherockstratabecalleddirectbottom;locatethedirectbottomorcoalseamunderoftherockstratabecalledoldbottom.Thecoalseamcrestthescaleboardtypeexpectstheinfluenceofthegeologystructuresportafterbesubjectedtothedepositionenvironmentand,itsgrowthindifferentregiondegreedissimilarity,thecoalseampossibilityforhaveisn'twhole.2,crestthatneedtobecontrolplankclassificationandadopttheprocessingwayoftheemptyareaAccordingtodifferentcresttheplanktypeandproperty,choosetopaytoprotectawayandadopttheemptyareaprocessingmethoddifferently,isaplankmanagementofbasicprinciple.2.1crestneededtopulltomakeplankclassificationPressaknotholerockstratastrength,thecrestplankthatneedstobecontrolcanisdividedinto:generalcresttheplank,slownessdescendtosinkaplankandiswholefallthecrestofthecaveinthedangerplanketc..2.2worknoodlesadopttheprocessingmethodoftheemptyareaTheprocessingmethodthatadoptsemptyareamainlyhas:all垮sfallamethod,partialfulltofillamethod,thecoalpillartopropupamethodtoalleviatetodescendtosinkamethodslowlyetc..3,cresttheplankpressurepresentacharacteristic3.1topthecoverrockstrataofthesportregulationandtheworkinfrontpaytoacceptpressuretodistributebehindDuringtheperiodofmine,adoptemptyareaaboveoftherockstratawilltakeplaceambulation,accordingtocresttheplankchangemindcondition,takingthecrannyrockstratainupthecoverrockstratafollowtheworknoodlestopushforwardthedirectiondemarcationasthreeareas:thecoalwallpropuptheinfluencearea,leavelayerareaandre-presssolidarea.Thenoodlesopenstosliceaneyetogotopushforwardforwardintheprocessfromthework,breakoriginalshouldtheequilibriumofthedintfield,causeshouldthedintre-distribute.Beadoptingthecoalworknoodlestobecometopaytoacceptpressureinfrontandback,itconcretelydistributesshapetohavesomethingtodowithadoptingtheemptyareaprocessingmethod.3.2firsttimestopresstopressamainmanifestationwiththeperiodFirsttimetopressamainmanifestation:BEaplank"byoneselfthevieldsong"rangeenlargement;thecoalwalltransformandfalltofall(theslicehelp);paytoprotecttodrillbottometc..Firsttimetopresstowanttokeeponmoreandsuddenlyandgenerallyfor2-3days.Periodtopressamainmanifestation:MainmanifestationBE:cresttheplankdescendtosinknastyplayincrementofspeed,cresttheplankdescendtosinkquantitytobecomebig;paywhatpillarbesubjectedtoloadwidespreadincrement;adoptemptyareatohangacrest;paypillartomakeanoise;causethecoalwallslicetohelp,paypillartodamage,crestplankoccurrencethestepdescendtosinketc..Ifpaythepillarparameterchoicetobeunsuitedtoaproperorsinglebodytopaythepillarstabilityworse,maycausethepartialcrestorcrestplankfollowtheworknoodlestoslicetofalletc..4,cresttheplankchoiceforprotectTheworknoodlesthefunctionforprotectdecelerateaplanktodescendtosink,supportingtocontrolacresttobeapartfromtheknotholeintegrityinsidethecrest,assuranceworkspacesafety.4.1choicesthatprotectmaterialandformPaytoprotectmaterialtomainlytherearethemetalssupportandthewoodsupport.Paytoprotectaformtomainlyhavealittlethepillartoprotect,thecotetypeprotecttopressasupportwithliquid.4.2sprotectaspecificationchoiceWhilechoosingtopaytoprotectspecification,mainlycontrolthefollowing2:00:1.Controltheworknoodlesadopthighanditsvariety.Generallycanaccordingtodrillaholethepillarformorhavealreadydugthetunneldataoftomakesuretoadopthigh.Fromlastthemovableregulationofthecoverrockstrata,cantheinitialassurancecrestplankatbiggestcontrolacresttobeapartfromplaceofaveragebiggestdescendtosinkquantity,selecttopayapillarmodelnumbersuitablely2controlthecrestplankofthenormalappearancetodescendtosinkthequantityandsupportcanthedrawbackquantity.ComputethebiggestandhighHmaxandminimumandhighHminthatpayspillar,selectspecificationofpaythepillar.Comprehensivethepillarmodelnumberandspecification,checkrelatedanticipate,assurancethemodelnumberofthepillar.5,theworknoodlesmanageseverydayofpointEverydaycrestthepointofplankmanagementisthewithaccuracycertainprotectsdensityandcontrolamethod,rightarrangementandorganizetoadoptcoalandcontrolacresttorelatetoinfixedtime,strengthentopaytoprotectthequalitymanagementbeforepress,theassistancethatchoosestouseagoodnecessityprotectetc.,attaintoexpeltoemitatrouble,assurancethepurposeof[with]efficiency.1choicethatprotectsdensityandcontrolsamethodAccordingtotheworknoodlescrestplankrock,adoptaperiodictopressobviousdegree,pressstrengthandtopressinfrontandbackacrestknotholevarietyacircumstanceetc.,thecertainprotectdensityandcontrolamethod.Itadoptcoalin2productionlineswithcontrolofthecresttorelatetoinfixedtimePeriodtodon'tobviouslypresstoadoptafield,emphasizetopaytoprotect,adoptcoal,controlaparallelhomework,possiblycontracttoadoptcoal,returntopillartoputdistancebetweenanoperationswithspeedtheworknoodlespropulsiondegree;periodtopressmoreandobviouslyadoptafield,attopressinfrontandbackadoptdifferentof,controltherelationorganizationproject,beforepressshouldnotadoptcoal,putacrestinthemeantimehomework,pressaftershouldadopttoadoptcoal,putacresttokeepminimumwrongbeapartfromparallelhomework.Fieldtostrengthentopaytoprotectthequalitymanagementassurancetopaypillartohavetopropupdint,prevent°frompayingpillartodrillbottomenoughbeforepress,rightadoptiontheassistanceprotect.Adoptthecoalworknoodlescrest,theplankmanageseverydayofthekeylieinraisingthespotmanagement,theoperationlevel,payingtoprotectandadapttoadoptafieldtopressandcrestthescaleboardvarietycircumstance,adoptrightoftheassistanceprotectmeasure,wellexertivecontrolaresult.

采煤工作面的顶板管理问题探讨顶板管理是采煤工作面安全管理的重点。据资料统计，顶板事故约占煤矿事故的60%，采煤工作面的事故又占了顶板事故的70%以上。因此，我们必须加强顶板管理，减少采煤工作面顶板事故的发生。1、顶、底板的定义及其分类赋存在煤层之上的邻近岩层称为顶板，赋存在煤层之下的邻近岩层称为底板。顶底板的岩性、强度及吸水性与采掘工作面的管理有直接关系，它们是确定顶板支护方式、选择采空区处理方法的主要依据。1.1顶板分类根据岩性、厚度及回采过程中垮落的难易程度，顶板分为伪顶、直接顶和老顶。根据直接顶运动对采场来压的影响，直接顶分为破碎、不稳定、中等稳定、稳定、坚硬顶板等五类。根据老顶运动在工作面内矿压显现程度和对工作面安全威胁的大小，老顶分为来压极强烈、来压强烈、来压较明显、来压不明显等四类。1.2底板分类根据岩层与煤层的相对位置关系，底板分为直接底和老底。直接位于煤层之下的岩层称为直接底;位于直接底或煤层之下的岩层称为老底。煤层顶底板类型受沉积环境及后期地质构造运动的影响，不同地区其发育程度不同，有的煤层可能会不全。2、需要控制的顶板分类及采空区的处理办法根据不同的顶板类型和性质，选择不同的支护方式和采空区处理方法，是顶板管理的基本原则。2.1需要拉制的顶板分类按顶板的岩层强度，需要控制的顶板可分为:一般性顶板、缓慢下沉顶板、有整体塌垮危险的顶板等。2.2工作面采空区的处理方法采空区的处理方法主要有:全部垮落法、局部充填法、煤柱支撑法和缓慢下沉法等。3、顶板压力显现特征3.1上覆岩层的运动规律及工作面前后支承压力分布在开采过程中，采空区上方的岩层会发生移动，根据顶板位移情况，将裂隙带岩层中上覆岩层沿工作面推进方向划分为三个区:煤壁支撑影响区、离层区、重新压实区。从