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首页 煤矿专业英语翻译

煤矿专业英语翻译.doc

煤矿专业英语翻译

身着华丽装的小丑
2019-06-16 0人阅读 举报 0 0 暂无简介

简介:本文档为《煤矿专业英语翻译doc》,可适用于外语资料领域

CoalSeamMethaneMethanegenerationMethane,carbondioxideandwateraregeneratedasbyproductsofthecoalformationprocessTheproportionsofeachgasproducedvaryduringtheprocessMostofthegasandwatermigratesawayfromtheseamHoweversomegasisretainedwithinthecoalseamThecapacityofcoaltoretaincarbondioxideismuchgreaterthanformethaneHowever,thelargequantitiesofmethaneproducedduringtheformationofthehighrankbituminousandanthracitecoalsflushedmostofthecarbondioxideawayThebituminouscoalsoftheSydneyandBowenBasinstypicallycontaingasconsistingofoverpercentmethanewithsmallerquantitiesofcarbondioxide,ethane,higherhydrocarbons,nitrogenandinertgasesTheseamsinsomeareasofthebasinscontainveryhighlevelsofcarbondioxideThiscarbondioxidewasintroducedlaterintothecoalmeasuresequencebyigneousactivityreplacingthemethanepreferentiallyTherearethreemechanismsbywhichgasisstoredwithinthecoalseamsAboutpercentofthegasisabsorbedontothecoalsurfacewithinthematrixporestructure,theremainderexistsasfreegasinthenaturalfracture(cleat)systemsoftheseamsorisdissolvedwithintheseamwaterGaswhichhasmigratedawayfromtheseamsisoftentrappedinthefracturesandporespaceswithintheroofandfloorrocksThecapacityofcoaltoholdgasisdependentonporositywhichinturnisrelatedtorank,gascompositionandgaspressureAgeneralrelationshiphasbeenestablishedthatsorptivecapacity(andthereforepotentialtotalgascontent)increaseswithrankofthecoalandwithdepthPermeabilityofcoaldecreaseswithdepthcoalmininghistoricallyhasbeenahazardousoccupationbut,inrecentyears,tremendousprogresshasbeenmadeinreducingaccidentalcoalminedeathsandinjuries在历史上,煤矿开采一直是危险的行业。但是,在近几年中,人们在减少煤矿伤亡事故方面取得了巨大的进步。何宁AccidentpreventionfundamentalsarenodifferentforcoalminingthanforanyothertypeofworkThefundamentalsapplytoallindustriesConstructionworkersmaybestruckbyfallingtoolsandmaterials,andminersmaybestruckbyfallingslateandcoalSailorsmaybetrappedbyshipboardfires,andminersmaybetrappedbyminefiresRailroadbrakemenmaylosehandsandfingerspositioningcouplers,andminersmaylosehandsandfingerspositioningcouplersManyotherexamplescouldbecited,butthepointisthataccidentsthathappenincoalminesarebasicallysimilartoaccidentsthathappeninotherindustriesThus,thebasicprinciplesforpreventingaccidentsapplyincoalminingastheydoinanyothertypeofworkThenaturalatmospherethatwebreathecontainsnotonlyitsgaseousconstituentsbutalsolargenumbersofliquidandsolidlidparticlesilThTheseareknownkbthebyhgenericinameaerosolsTheyarisefromacombinationofnaturalandindustrialsourcesincludingcondensation,condensationsmokes,smokesvolcanicactivity,soilsandsands,andmicrofloraMostoftheparticlesaresmallenoughtobeinvisibletothenakedeyeeyeDustisthetermweuseinreferencetothesolidparticles我们呼吸的自然大气中,不仅包包含气态成分,而且还包含液体和固体微粒。它们统一名称为悬浮微粒。悬浮含液固微粒们统名称为浮微粒浮微粒的产生有自然方面又有工业方面的原因,这包括:凝结、烟气、火山活动、沙土和微植物群。大部分微粒足够小,以至于人肉眼看不到。我们使用粉尘这个术语,指的是固体颗粒。IntroductionThepphysiologiesygofairbreathinggcreatureshaveevolvedtobeabletodealefficientlywithmostoftheaerosolsthatoccurnaturallyHowever,withinclosedindustrialenvironments,concentrationsofairborneparticulatesmayreachlevelsthatexceedtheabilityofthehumanrespiratorysystemtoexpeltheminatimelymanner呼吸空气的生物的生理系统已进化为能够有效地对付自然情况下产生的悬浮颗粒。然而,在封闭的工业环境内,悬浮空气中的微粒浓度可能超过人类呼吸系统能及时排除它们的程度。Inparticular,mineraldustsareformedwheneverrockisbkbybrokenbimpact,itabrasion,bicrushing,hicutting,ttigrindingidiorexplosivesThefragmentsthatareformedareusuallyirregularinshapeshapeThelargetotalsurfaceareaofdustparticlesmayrenderthemmoreactivephysically,chemicallyandbiologicallythantheparentmaterialmaterialThishasanimportantbearingontheabilityofcertainduststoproducelunggdiseases尤其是,只要岩石撞击、磨损、挤压、切割、研磨或者爆破,就能够破碎,从而形成矿尘。形成的碎片通常在形状上是不规则的。物质破碎后形成的尘粒总表面积增大,从而在物理、化学和生物方面活性增强。这就对某些微粒的能力产生重要影响,能引起肺病。微粒的能力产生影响能起肺病

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