RockStrataControlSimulationTechnology智慧樹知到期末考試答案+章節(jié)答案2024年太原理工大學Whataretheadvantagesofthemechanicalmethod?（）

答案:simpleequipment;noneedofpowersupply;stabilityandsecurityAsfortheresearchfocusanddevelopmenttrendofdiscreteelementmethod,thecorrectstatementis（）.

答案:Moreartificialassumptions;Themodelsatisfiesmoleculardynamics;particleelementamongdiscreteelementsisthemostactiveunitandmodelwiththewidestrangeofapplicationsThemodelstandusuallyconsistsof（）.

答案:majorstructure;Loadingsystem;MeasurementsystemThedeformationcharacteristicsoftheblockaredefinedbythefollowingcommand（）

答案:genedgev;genquadvTheresultsofsimilarsimulationexperimentsareasfollows:（）

答案:thefamoustheoryof“blockgirder”;thelawofstratabehaviorandrockfracture;thelawoftheformationof“triplezones”oftheoverlyingstratacausedbyundergroundminingAmongthefollowingoptions,belongingtotheopticalmethodis（）

答案:levelinstrumentmeasurementmethod;photographicdisplacementmethod;moiremethodWhichofthefollowingareboundaryconditions（）.

答案:displacement;stressThechemicalcompositionofgroundwaterisgenerally（）

答案:biologicalproducts;majorions;dissolvedgases;radioactiveelementsWhichofthefollowingaremediaconditions（）

答案:Poisson’sratio;compressivestrengthWhatshouldbedonebeforesettingupthesurveyline（）

答案:Applyboundaryconditionsandinitialconditions;AnchorsarelaidinthehaulagelaneThedeformationcharacteristicsofablockcanbedefinedbywhatcommand:（）

答案:genedgev;genquadvWhichofthefollowingarecorrect（）

答案:Theboundaryelementmethodisbetterthanthefiniteelementmethodforstressconcentrationproblems;Finiteelementmethodcansimulatethesolutiondomainofcomplexgeometry;Thefinitedifferencemethodisanapproximatenumericalsolutionwhichdirectlytransformsthedifferentialproblemintoanalgebraicproblem.Theelectricmeasurementmethodhastheadvantagesof（）.

答案:easytointerfacewithall-purposeinstrumentsandsignalprocessingequipment;continuousmeasurementandrecordingformanytimes;highmeasurementaccuracyWhatdeterminesthesizeofrockcollapse（）.

答案:weightbyvolume;Theintensityofrock;Thethicknessofthecollapse;DistancefromthegroundInthenumericalmodel,theboundaryisdividedintotwotypes:（）

答案:artificial;actualprintplin1ydisp；Intheydirection（）.

答案:displacementTheboundaryelementmethodisdescribedincorrectlyby（）.

答案:TheboundaryelementmethodiscalledSPHTheplanestressmodelisrelativelysimple,anditswidthisaslongasitcankeepthetransversestabilityofthemodel.Generally,thewidthofthemodelheightis（）.

答案:1/8～1/5Itsvvaluedefinesthe（）ofthetriangularelement,namely,thesmallerthevvalueis,thesmallertheelementintheblockis.

答案:Thelargestlengthsolveratio1e-5；Theunbalanceforceisrecordedandcalculateduntil（）reaches1e-5.

答案:precisionWhichofthefollowingoptionsshouldnotbeconsideredintheselectionofresistancestraingauge?（）

答案:HardnessofmaterialThenecessaryandsufficientconditionforphenomenonsimilarityis（）.

答案:TheThirdSimilarityTheoremCons=（）meansthatthemodelblockmaterialisremovedorexcavated.

答案:0Whichofthefollowingisnotamediumcondition（）.

答案:geometricdimensionresetdisp；Aftertheoriginalequilibriumofthemodel,thedisplacementbecomes（）.

答案:0Supposethataphysicalsystemhasnphysicalquantitiesandcontainsmdimensionsinthesequantities,thenthevalueofindependentsimilaritycriterionis（）.

答案:n-mTheFirstTheoremofSimilaritysatisfiesseveralconditions（）.

答案:2Allnodesinoneelementhavethesame（）value.

答案:stressIfthesimulatedstratumthicknessislessthan（）m,acomprehensiveselectionshouldbemade.

答案:0.3Inordertoensuretheuniformhumidityinthemodelduringtheexperiment,itcanbeprotectedwith（）inthemoldremovaltopreventtheevaporationofwaterandthechangeofstrength.

答案:vinylresinandepoxyresinEachlayershallbecompletedassoonaspossible,generallywithin（）minutes.

答案:20Numericalmechanicalanalysishasbecomeaconventionalmeanstosolvecomplexengineeringanalysisproblems.（）

答案:Findacertainreliableconstructionscheme“segment”isthenumberofagroupofpropwhosedefaultvalueis（）.

答案:5Whichofthefollowingdoesnotbelongtophysicalsimilarity（）.

答案:lengthUDECprovides（）jointgenerators.

答案:2Thefiniteelementmethoddoesnotneedtomeshthemodelinstructuraldiscrete.（）

答案:錯Afterpartitioningthejoints,youhadbettertype“pause”,“plbl”displays判斷題ofthepartitionedblockoryoucantype“plholdbl”intotext.（）

答案:對Thedisadvantageofsimilaritysimulationisthattheexperimentcycleistoolong.（）

答案:錯Inordertodeterminethecollapseload,"straincontrol"boundaryconditionsareoftenusedinsteadof"stresscontrol",thatis,applyingconstantspeedandmonitoringboundaryreactionforcesinsteadofapplyingforceandmonitoringdisplacement.（）

答案:對Arotatingbenchcanbeusedtosimulategentlydippingstrata.（）

答案:對Laserdisplacementmeasurementmethodbelongstoelectricmeasurementmethod.（）

答案:錯Numericalanalysismethodsmainlyincludeanalysisofcertaintymethodsandanalysisofuncertaintymethods.（）

答案:對Numericalsimulationcannotonlysimulatethecomplexmechanicalandstructuralcharacteristicsofrockmass,butalsoconvenientlyanalyzevariousboundaryvalueproblems.（）

答案:對Accordingtothethirdtheoremofsimilitude,wecanpointouttherulesthatmustbeobeyedindoingmodelexperiments.（）

答案:對Thefirststepofphysicalsimilaritysimulationtodeterminegeometricsimilarityratioistocalculatethelocationofkeylayers,determinethenumberandpositionofsimulatedlayers,andcalculatetheheightofsimulatedcoalstrata.（）

答案:對Whenthenumberoflayerslaidbythephysicalsimilaritymodeldirectlyreachesthesurface,thereisnoneedtoapplyadditionalexternalforcetosimulateloading.（）

答案:對printpline2xdis[Recordtheverticaldisplacementofline2].（）

答案:錯Therequirementofcell-freemethodforgridisdispensable.（）

答案:錯Typetunnelfirstandthencrackack.Thecrackdoesnotpenetratethroughthetunnel.（）

答案:對CommandGenEdgeVtoapplytoblocksofanyshape.ItsVvaluedefinesthemaximumsidelengthofthetrianglecells,thatis,thesmallertheVvalue,thesmallerthecellintheblock.（）

答案:對Whenthenumberoflayerslaidbythephysicalsimilaritymodelreachesthesurfacedirectly,noadditionalforceisrequired.（）

答案:對Accordingtotheconstitutiverelationofblockandjoint,theattributeparametersneededfornumericalcalculationaredetermined,andthemechanicalparametersoftheinterfacebetweenoverburdenrockandcoal-rockstratumaredeterminedaccordingtothephysicalandmechanicaltestdatainlaboratoryandfield.（）

答案:對Innumericalsimulation,themodelboundaryeffectshouldbeconsideredandsaintVenant'sprincipleused.（）

答案:對Horizontalstresscalculationisusuallyexpressedbymultiplyingthelateralpressurecoefficientby（）whenhorizontalconstraintsareappliedtotheleftandrightboundariesofthemodel.

答案:ThetangentialstressPhysicalsimilaritysimulationversusnumericalsimulationwhatneedstobedoneinthematerialgatheringstep（）.

答案:Getageologicaloverview,identifythegoalsandproblemsofthesimulation;Analysisofgeologicalconditions,obtainthecomprehensivehistogramofcoalandrockstrata;ObtainthephysicalandmechanicalpropertiesofrockarethroughexperimentsThegeometricsimilarityratioofnumericalsimulationis1:1.（）

答案:對Physicalsimilaritysimulationdeterminestheprinciplesthatsimilarmaterialsneedtofollow（）.

答案:Whentheratioofmixedmaterialsischanged,itsmechanicalpropertiescanbegreatlychanged.;Themechanicalpropertiesofthematerialarestableandnoteasilyaffectedbyenvironmentalchanges.;Whenthesimilarmaterialsareselected,themainphysicalandmechanicalpropertiesofthecorrespondingpartsofthemodelandprototypeshouldbesimilar.;Materialsshouldbeeasytoobtain,easytomanufacture,easytolay.Physicalsimilaritysimulationandnumericalsimulationarethesameinthematerialcollectionstep.（）

答案:對Whatfactorsarerelatedtothefracturemechanismofoverlyingrockmassinstope（）.

答案:Miningmethod;Burieddepth;Coalseamthickness;RocklithologyBecausethenumericalsimulationiscarriedoutincomputersoftware,thereisnoneedtodeterminethedensitysimilarityratioandstresssimilarityratio.（）

答案:對ThesystemunitofDensityis（）.

答案:kg/m3Boundaryforcesandstressescanbeappliedtotheboundariesofrigidanddeformablebodies,butvelocity(displacement)boundariesapplyonlytorigid.（）

答案:錯Thebasiccommandsforcuttingblocksaremissing（）.

答案:ROUNDThemostefficientplasticmodelis（）.

答案:D-Pmodel;M-CmodelSincethenecessaryinformationinputfordesignpredictionislimited,geotechnicalnumericalmodelsaremainlyusedtoexplainthemechanicalmechanismsaffectingthesystemcharacteristicsandtoperformsimpleexploratorycalculationsforengineeringdesign.（）

答案:對Onceblockcuttingiscompleted,materialpropertiesmustbeassignedtoallblocksanddiscontinuities.（）

答案:對Itisveryeasytodeterminewhetherthestressstateformedinthejointmodelrepresentstheinitialstate.（）

答案:錯()Changetheblocktoisotropicelasticcharacteristics;()changestheblocktomoore-Coulombmodelandconsiderstheplasticproperties.（）.

答案:Cons=1Cons=3InwhichcaseUDECwilltakealongtimetoconverge:（）.

答案:Therigiditiesorpropertiesoftheblockmaterialandthejointmaterialarequitedifferent;Thereisabigdifferenceinblockorunitsize.Themore()thefilletlengthis,themore()theinitialunbalanceforceis.（）.

答案:Big,bigContinuousmediaanalysismethodsmainlyinclude（）.

答案:Theboundaryelementmethod;Finiteelementmethod;Finitedifferencemethod;NoelementmethodWhichofthefollowingisnotanondeterministicanalysismethod（）.

答案:ThediscreteelementmethodThemainstepsoffiniteelementmethodtosolvetheprobleminclude（）.

答案:Loadshifting,boundaryconditionprocessing,solvinglinearequation;Solvingelementstressandstrain,resultprocessinganddisplay;Structurediscrete,unitanalysis,integralanalysisnumericalanalysismethodsmainlyincludeanalysisofcertaintymethodsandanalysisofuncertaintymethods.（）

答案:對Whichofthefollowingsoftwareisnotbasedondiscreteelementmethod（）.

答案:ANSYSWhichofthefollowingisnottheapplicationareaoffiniteelementmethod（）.

答案:entertainmentDiscreteelementmethodcannotsolvethree-dimensionalproblems.（）

答案:錯WhichofthefollowingiswrongaboutUDEC（）.

答案:TheUDECcalculationpreparationprocessiscomplexBoundaryelementmethod(BEM)isanaccurateandeffectivemethodforengineeringnumericalanalysis.（）

答案:對Finitedifferencemethodismoreefficientthanfiniteelementmethod.（）

答案:對Modelmonitoringinstrumentsmainlyinclude（）.

答案:digitalhighspeedstraingauge;displacementmeter;metalstrainsensorsDyesshouldnotbeusedtodistinguishrockformations.（）

答案:錯Selectsimilarmaterialsbasedonthefollowingprinciples（）.

答案:Themainphysicalandmechanicalpropertiesofthemodelmaterialsaresimilartothecorrespondingpartsoftheprototypematerials;Afterchangingtheratio,themechanicalindexcanbegreatlychangedforselection;Themechanicalindexisstable,andthemechanicalpropertieswillnotchangebecauseofchangesinatmospherictemperatureandhumidity;Convenientformanufacturewithshortsettingtimeandsimplelayingthecompositekeystratumisdividedintothemainkeystratumandtheinferiorkeystratum,andtheruptureoftheinferiorkeystratumislaterthanthatofthesinglekeystratum.（）

答案:對Ifthesimulatedstratumthicknessislessthan()m,acomprehensiveselectionshouldbemade:（）.

答案:0.3Theaveragebulkdensityofthemixtureofsandasaggregateandgypsumandlimeascementis（）g/cm3.

答案:2.5Inthesimulationexperiment,plasticfilmscanbeplacedonbothsidesofthemodelframetoreducefriction.（）

答案:對Generallyspeaking,inthestageofcoalseammining,thefirstpressingstepofsinglekeystratumislessthanthatofcompositekeystratum.（）

答案:對Theequivalentmaterialmodeltestsystemconsistsoftwoparts:arigformodeltestsandatestanddataacquisitionsystem.（）

答案:對Metalstrainsensorscannotmonitorlongitudinalhorizondisplacement.（）

答案:錯Whichofthefollowingisnotanadvantageoftheelectricalmethod?（）

答案:SimpleequipmentMoiremethodisanewmethodofexperimentalstressanalysis.Itisanopticalmethodtomeasurethedisplacementfieldandstrainfieldbyusingtwogroupsofgratinginterferencetogeneratedisplacementmap.（）

答案:對Itisnecessarytocomprehensivelyconsiderthestress,strainandfailureofrockmassandrelatedstructuresinordertofullyunderstandtherelevantlawswhenstudyingsimulationmodels.（）

答案:對Whichofthefollowingoptionsshouldnotbeconsideredintheselectionofresistancestraingauge.（）

答案:HardnessofmaterialWhichofthefollowingisnotatypeofmeasurementmethod（）.

答案:instrumentalmethodResistancestraingaugeisthemaincomponentofelectricalmeasurementmethod.（）

答案:對Whatarethefollowingaspectsobservedinthemodel?（）

答案:Measurementofmodeldeformation(relativedisplacement);Measurementofinternalstressofthemodel;MeasurementofabsolutedisplacementofthemodelWhichofthefollowingmethodsismechanical?（）

答案:DialindicatormethodThedisadvantageofthemechanicalmethodisthattheequipmentistoocomplicated.（）

答案:錯Themodelframeisusuallycomposedofmainstructure,loadingsystemandmeasuringsystem.（）

答案:對Atpresent,themodelframeusedinChinais（）.

答案:Planestrainmodelframe;Planestressmodelframe;three-dimensionalmodelframe;swivelmodelframeInthestudyofthree-dimensionalproblemsinundergroundspace,need（）.

答案:three-dimensionalmodelframeThemodelislayeredwithmicapowdertoabsorbmoisture.（）

答案:錯Thenextstepofagitationinmakingthemodelis（）.

答案:InstallationtemplateWhenthemoisturecontentisreducedtomakethemechanicalpropertiesofthematerialstable,themodelexcavationorcuttingcanbecarriedoutonlyafterthehumidityislessthan（）.

答案:20%Fortheresearchobjectofminerockmasspressure,theloadtobeconsideredis（）.

答案:tectonicstress;self-weightstressFortheresearchobjectofminerockpressure,themainloadis（）.

答案:self-weightstressFortheresearchobjectofminerockpressure,themainloadisself-weightstress,followedbytectonicstress.（）

答案:對Planemodelcanbedividedintoplanestressmodelandplanestrainmodelaccordingtodifferentconstraintsonbothsides.（）

答案:對Whatarethedisadvantagesofgypsummaterials（）.

答案:Thestrengthofsimilarmaterialsissensitivetogypsumdosage,whichisnoteasytocontrol;Easytoabsorbmoisture,materialstrengthwillbereducedThefollowingmaterialsthatarenotaggregateare（）.

答案:LimeWhatcanbeusedtoincreasetheplasticityofthematerial（）.

答案:clayCoarsemicawithadiameterofD=1.4~5mmshouldbeusedforthesimulationofweaksurfacessuchasinterlayercracksandjoints.（）

答案:對Thelargertheparticlesizeofsand,thesmallerthestrengthandelasticmodulusofthematerial.（）

答案:錯Calciumcarbonateisaplasticmaterial.（）

答案:錯Themechanicalpropertiesofmaterialscanbechangedbychangingtheratioofmaterials.（）

答案:對Finemicawithdiameterd=()mmshouldbeusedforseparationofmicapowder（）.

答案:0.3～0.5Claycanbeusedasbothaggregateandcementingmaterial.（）

答案:對Thefollowingmaterialsarethecementingmaterials（）.

答案:kaolinclay;cement;liquidglass;gypsumThemodelisanartificiallyshapedentityinthelaboratoryforstudyingthemechanicalpropertiesoftheprototype,whichisanapproximationoftheprototype.（）

答案:對Thefollowingbelongingtothecategoryofsingle-valuedconditionsare（）.

答案:boundaryconditions;mediumconditions;Geometricconditions;initialconditionsWhichofthefollowingisthefundamentaldimensionunitofaforcesystem（）.

答案:[F];[L];[T]Physicalphenomenaandlawsarerelatedtotheunitsofmeasurementchosen.（）

答案:錯Thesimilaritycriterioncanberegardedas（）.

答案:invariantWhenusing（）toguidemodelresearch,thefirstimportantthingistoderivethesimilaritycriterion.

答案:ThefirsttheoremofsimilarityThefirsttheoremofsimilarityandthesecondtheoremofsimilarityarethepropertiesaftersimilarity,whicharesufficientconditionsforsimilarityofphenomena.（）

答案:錯Accordingtothecharacteristicsofsimilarityphenomenon,similaritycanbedividedintophysicalsimilarityandmathematicalsimilarity.（）

答案:對Whichofthefollowingdoesnotbelongtothecategoryofgeometricsimilarity（）.

答案:bulkdensityWhichofthefollowingdoesnotbelongtothebasicdimensionunitofaqualitysystem（）.

答案:[F]Inthesimulationstudyofrockformationcontrol,thefollowingoptionisn