采矿工程专业毕业论文外文翻译

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1、英文原文：AnalyticalmodelandapplicationofstressdistributiononminingcoalfloorAbstract：Giventheanalysisofundergroundpressure，astresscalculationmodelofcolafloorstresshasbeenestablishedbasedonatheoryofelasticity．Themodelpresentsthelawofstressdistributionontherelativelyfixedpositionoftheminingcoalfloor：the

2、extentofstressvariationinafixedfloorpositiondecreasesgraduallyalongwithdepth．Thedecreasingrateoftheverticalstressisclearlylargerthanthatofthehorizontalstressataspecificdepth．Thedirectionofthemaximumprincipalstresschangesgraduallyfromaverticaldirectiontoahorizontaldirectionwiththeadvanceoftheworki

3、ngface．Thedeformationandpermeabilityoftherockmassofthecoalfloorareobtainedbycontrastingthedifferenceoftheprincipalstressestablishedfromtheoreticalcalculationswithcurvesofstress-strainandpermeability-strainfromtests．Whichisanimportantmechanicalbasisforpreventingwaterinrushfromconfinedaquifers．Keyw

4、ords：model；coalfloor；stressdistribution；analysis1IntroductionWiththedevelopmentofcoalseammining，Thestressfieldofrockstrataofcoalseamfloorswillchangeandcontinuetoberedistributedbecauseoftheeffectofmining．Theresultswill　bringonfloordeformation，displacementandpossibledestructiontoattainanewbalance[1

5、]．Astudyofthelawofstressdistributionoffloorshasimportant，practicalimplicationsinunderstandingdeformationanddestructivecharacteristicsandpredictingwaterinrushfromfloorsandfordesigningsuitablelocationsfortunnelsandselectingmaintenancemethodswhendepthincreased．Atpresent，thestudyofthelawofstressdistr

6、ibutionoffloorsmostlyproceedsfromanumberofcalculationsbasedonfiniteelementanalysesandsimilarmaterialtests[2-6]．Inthispaper，thestudyofstressdistributionoffloorsinrelativelyfixedpositionsisdiscussedanalyticallywithatheoryofelasticityandwepresentanapplicationcombinedwithactualdataofaparticularsite．2

7、FundamentalprincipleTheformulasofstressdistributionarederivedfromthesuperpositionprinciple，giventhetheoryofelasticityondistributedloadsonasemi-infiniteplane[7-8]．TheverticaldistributionloadofABonasemi-infiniteplaneisas