Rock Strata Control Simulation Technology智慧树知到课后章节答案2023年下太原理工大学

RockStrataControlSimulationTechnology智慧树知到课后章节答案2023年下太原理工大学太原理工大学

第一章测试

Stratacontrolsimulationtechnologyisdividedintolaboratoryequivalentmaterialsimulationandnumericalsimulation.（）

A:错B:对

答案:对

Thesimilaritysimulationmethodhastheadvantagesofintuitionistic,simple,economical,rapidandshortexperimentperiod.（）

A:错B:对

答案:对

Miningengineersaremoreconcernedabouttheproblemcanbebasicallydividedintotwocategories:thecontrolofthesurroundingrockandthecontrolproblemoftheroadway’ssurroundingrock.（）

A:对B:错

答案:对

Simulationresearchhascertainlimitations,becausethemechanicalpropertiesofrockmassandthelawoforepressureactivityarecomplicated,anditisdifficulttosimulatethemcompletelyandaccurately.（）

A:对B:错

答案:对

Whatarethecharacteristicsofsimilarsimulationtechnology（）.

A:TakealongtimeB:AccuracyC:ObjectivityD:Intuitive

答案:Intuitive

Whichofthefollowingisnotacommonnumericalmethod（）.

A:TheinfiniteelementmethodB:FinitedifferencemethodC:TheboundaryelementmethodD:Thefiniteelementmethod

答案:Theinfiniteelementmethod

Inthesimulationstudyofrockformationcontrol,thefollowingoptionisnottheroleofsimulationexperiment（）.

A:AccurateandcompletesimulationoforepressureactivityB:Savemanpower,materialresourcesandworkinghoursC:ItprovidesvaluablereferencedataforindustrialtestD:Tosolvesomerockmasspressureproblemswhichcannotbesolvedbytheoreticalanalysismethodatpresent

答案:Accurateandcompletesimulationoforepressureactivity

Whichofthefollowingisnotanindicationoftheimportanceofphysicalsimulationtechniques（）.

A:Solvespecificcomplexproblems.B:Numericalsimulationresultsoftenneedtobecomparedorverifiedwithsimilarsimulationresults.C:Moderntechnologyrepresentedbyelectroniccomputersmakesphysicalsimulationtechnologymorereliable.D:Physicalsimulationtechnologycanaccuratelyandcompletelysimulatethelawoforepressureactivity

答案:Physicalsimulationtechnologycanaccuratelyandcompletelysimulatethelawoforepressureactivity

Inrecentyears,withthecontinuousimprovementofengineeringdesignandscientificresearchrequirementsandtherapiddevelopmentofcomputercomputingcapability,numericalmechanicalanalysishasbecomeaconventionalmeanstosolvecomplexengineeringanalysisproblems.Itsmainfunctionsareshowninthefollowingaspects（）.

A:IncreasedengineeringandproductreliabilityB:IncreasedengineeringandproductcostsC:TostudytheinternalmechanicsmechanismofengineeringproblemsD:Identifypotentialproblemsduringtheengineeringandproductdesignphases

答案:Increasedengineeringandproductreliability;Tostudytheinternalmechanicsmechanismofengineeringproblems;Identifypotentialproblemsduringtheengineeringandproductdesignphases

Incivilengineering,transportation,miningengineering,waterconservancyandhydropowerandotherfields,thematerialsinvolvedhave（）andothercharacteristics.

A:SpeciesdiversityB:TheirregularityofgeometricformsC:scarcityD:Mediumformpluralism

答案:Speciesdiversity;Theirregularityofgeometricforms;Mediumformpluralism

第二章测试

Accordingtothecharacteristicsofsimilarityphenomenon,similaritycanbedividedintophysicalsimilarityandmathematicalsimilarity.（）

A:对B:错

答案:对

Themodelisanartificiallyshapedentityinthelaboratoryforstudyingthemechanicalpropertiesoftheprototype,whichisanapproximationoftheprototype.（）

A:对B:错

答案:对

Physicalphenomenaandlawsarerelatedtotheunitsofmeasurementchosen.（）

A:对B:错

答案:错

Thefirsttheoremofsimilarityandthesecondtheoremofsimilarityarethepropertiesaftersimilarity,whicharesufficientconditionsforsimilarityofphenomena.（）

A:错B:对

答案:错

Whenusing（）toguidemodelresearch,thefirstimportantthingistoderivethesimilaritycriterion.

A:SinglevaluedconditionB:ThesecondtheoremofsimilarityC:ThefirsttheoremofsimilarityD:Thethirdtheoremofsimilarity

答案:Thefirsttheoremofsimilarity

Whichofthefollowingdoesnotbelongtothecategoryofgeometricsimilarity（）.

A:areaB:volumeC:bulkdensityD:Length

答案:bulkdensity

Whichofthefollowingdoesnotbelongtothebasicdimensionunitofaqualitysystem（）.

A:[F]B:[L]C:[M]D:[T]

答案:[F]

Thesimilaritycriterioncanberegardedas（）.

A:1B:constantC:variableD:invariant

答案:invariant

Whichofthefollowingisthefundamentaldimensionunitofaforcesystem（）.

A:[T]B:[F]C:[L]D:[M]

答案:[T];[F];[L]

Thefollowingbelongingtothecategoryofsingle-valuedconditionsare（）.

A:initialconditionsB:boundaryconditionsC:mediumconditionsD:Geometricconditions

答案:initialconditions;boundaryconditions;mediumconditions;Geometricconditions

第三章测试

Claycanbeusedasbothaggregateandcementingmaterial.（）

A:对B:错

答案:对

Themechanicalpropertiesofmaterialscanbechangedbychangingtheratioofmaterials.（）

A:对B:错

答案:对

Thelargertheparticlesizeofsand,thesmallerthestrengthandelasticmodulusofthematerial.（）

A:对B:错

答案:错

Calciumcarbonateisaplasticmaterial.（）

A:错B:对

答案:错

CoarsemicawithadiameterofD=1.4~5mmshouldbeusedforthesimulationofweaksurfacessuchasinterlayercracksandjoints.（）

A:对B:错

答案:对

Thefollowingmaterialsthatarenotaggregateare（）.

A:PowderedironB:LimeC:tailingsD:Micapowder

答案:Lime

Whatcanbeusedtoincreasetheplasticityofthematerial（）.

A:resinB:asphaltC:DiatomiteD:clay

答案:clay

Finemicawithdiameterd=()mmshouldbeusedforseparationofmicapowder（）.

A:0.3～0.5B:0.5～0.7C:0.7～0.9D:0.1～0.3

答案:0.3～0.5

Thefollowingmaterialsarethecementingmaterials（）.

A:kaolinclayB:gypsumC:cementD:liquidglass

答案:kaolinclay;gypsum;cement;liquidglass

Whatarethedisadvantagesofgypsummaterials（）.

A:hardtoobtainB:Easytoabsorbmoisture,materialstrengthwillbereducedC:Thestrengthofsimilarmaterialsissensitivetogypsumdosage,whichisnoteasytocontrolD:Unstableperformance

答案:Easytoabsorbmoisture,materialstrengthwillbereduced;Thestrengthofsimilarmaterialsissensitivetogypsumdosage,whichisnoteasytocontrol

第四章测试

Fortheresearchobjectofminerockpressure,themainloadisself-weightstress,followedbytectonicstress.（）

A:错B:对

答案:对

Themodelframeisusuallycomposedofmainstructure,loadingsystemandmeasuringsystem.（）

A:错B:对

答案:对

Planemodelcanbedividedintoplanestressmodelandplanestrainmodelaccordingtodifferentconstraintsonbothsides.（）

A:错B:对

答案:对

Themodelislayeredwithmicapowdertoabsorbmoisture.（）

A:对B:错

答案:错

Inthestudyofthree-dimensionalproblemsinundergroundspace,need（）.

A:PlanestressmodelframeB:three-dimensionalmodelframeC:PlanestrainmodelframeD:swivelmodelframe

答案:three-dimensionalmodelframe

Fortheresearchobjectofminerockpressure,themainloadis（）.

A:self-weightstressB:TensilestressC:CompressivestressD:tectonicstress

答案:self-weightstress

Thenextstepofagitationinmakingthemodelis（）.

A:MeasurementB:materialratioC:InstallationtemplateD:Loading

答案:Installationtemplate

Whenthemoisturecontentisreducedtomakethemechanicalpropertiesofthematerialstable,themodelexcavationorcuttingcanbecarriedoutonlyafterthehumidityislessthan（）.

A:30%B:20%C:10%D:40%

答案:20%

Atpresent,themodelframeusedinChinais（）.

A:PlanestrainmodelframeB:swivelmodelframeC:PlanestressmodelframeD:three-dimensionalmodelframe

答案:Planestrainmodelframe;swivelmodelframe;Planestressmodelframe;three-dimensionalmodelframe

Fortheresearchobjectofminerockmasspressure,theloadtobeconsideredis（）.

A:TensilestressB:tectonicstressC:CompressivestressD:self-weightstress

答案:tectonicstress;self-weightstress

第五章测试

Itisnecessarytocomprehensivelyconsiderthestress,strainandfailureofrockmassandrelatedstructuresinordertofullyunderstandtherelevantlawswhenstudyingsimulationmodels.（）

A:对B:错

答案:对

Thedisadvantageofthemechanicalmethodisthattheequipmentistoocomplicated.（）

A:错B:对

答案:错

Resistancestraingaugeisthemaincomponentofelectricalmeasurementmethod.（）

A:对B:错

答案:对

Moiremethodisanewmethodofexperimentalstressanalysis.Itisanopticalmethodtomeasurethedisplacementfieldandstrainfieldbyusingtwogroupsofgratinginterferencetogeneratedisplacementmap.（）

A:对B:错

答案:对

Whichofthefollowingisnotatypeofmeasurementmethod（）.

A:MechanicalmethodB:ElectrometricmethodC:instrumentalmethodD:Photometricmethod

答案:instrumentalmethod

Whichofthefollowingoptionsshouldnotbeconsideredintheselectionofresistancestraingauge.（）

A:StaticordynamicloadB:Long-termobservationorshort-termmeasurementC:HardnessofmaterialD:Measuretheworkingconditionoftheobject

答案:Hardnessofmaterial

Whichofthefollowingmethodsismechanical?（）

A:photographicdisplacementmethodB:lasermeasurementmethodC:levelinstrumentmeasurementmethodD:Dialindicatormethod

答案:Dialindicatormethod

Whichofthefollowingisnotanadvantageoftheelectricalmethod?（）

A:continuousmeasurementandrecordingformanytimesB:easytointerfacewithall-purposeinstrumentsandsignalprocessingequipmentC:SimpleequipmentD:highmeasurementaccuracy

答案:Simpleequipment

Whatarethefollowingaspectsobservedinthemodel?（）

A:Measurementofmodeldeformation(relativedisplacement)B:MeasurementofinternalstressofthemodelC:MeasurementofabsolutedisplacementofthemodelD:Maximumloadvalueofsupport

答案:Measurementofmodeldeformation(relativedisplacement);Measurementofinternalstressofthemodel;Measurementofabsolutedisplacementofthemodel

Whataretheadvantagesofthemechanicalmethod?（）

A:needofpowersupplyB:stabilityandsecurityC:strongabilitytoresistexternalinterferenceD:simpleequipment

答案:stabilityandsecurity;strongabilitytoresistexternalinterference;simpleequipment

第六章测试

Generallyspeaking,inthestageofcoalseammining,thefirstpressingstepofsinglekeystratumislessthanthatofcompositekeystratum.（）

A:对B:错

答案:对

Theequivalentmaterialmodeltestsystemconsistsoftwoparts:arigformodeltestsandatestanddataacquisitionsystem.（）

A:对B:错

答案:对

Metalstrainsensorscannotmonitorlongitudinalhorizondisplacement.（）

A:错B:对

答案:错

Inthesimulationexperiment,plasticfilmscanbeplacedonbothsidesofthemodelframetoreducefriction.（）

A:错B:对

答案:对

thecompositekeystratumisdividedintothemainkeystratumandtheinferiorkeystratum,andtheruptureoftheinferiorkeystratumislaterthanthatofthesinglekeystratum.（）

A:对B:错

答案:对

Dyesshouldnotbeusedtodistinguishrockformations.（）

A:对B:错

答案:错

Ifthesimulatedstratumthicknessislessthan()m,acomprehensiveselectionshouldbemade:（）.

A:0.3B:0.2C:0.4D:0.1

答案:0.3

Theaveragebulkdensityofthemixtureofsandasaggregateandgypsumandlimeascementis（）g/cm3.

A:2.5B:2.7C:2.4D:2.6

答案:2.5

Selectsimilarmaterialsbasedonthefollowingprinciples（）.

A:Afterchangingtheratio,themechanicalindexcanbegreatlychangedforselectionB:ConvenientformanufacturewithshortsettingtimeandsimplelayingC:ThemainphysicalandmechanicalpropertiesofthemodelmaterialsaresimilartothecorrespondingpartsoftheprototypematerialsD:Themechanicalindexisstable,andthemechanicalpropertieswillnotchangebecauseofchangesinatmospherictemperatureandhumidity

答案:Afterchangingtheratio,themechanicalindexcanbegreatlychangedforselection;Convenientformanufacturewithshortsettingtimeandsimplelaying;Themainphysicalandmechanicalpropertiesofthemodelmaterialsaresimilartothecorrespondingpartsoftheprototypematerials;Themechanicalindexisstable,andthemechanicalpropertieswillnotchangebecauseofchangesinatmospherictemperatureandhumidity

Modelmonitoringinstrumentsmainlyinclude（）.

A:modelplaneB:metalstrainsensorsC:displacementmeterD:digitalhighspeedstraingauge

答案:metalstrainsensors;displacementmeter;digitalhighspeedstraingauge

第七章测试

numericalanalysismethodsmainlyincludeanalysisofcertaintymethodsandanalysisofuncertaintymethods.（）

A:对B:错

答案:对

Boundaryelementmethod(BEM)isanaccurateandeffectivemethodforengineeringnumericalanalysis.（）

A:对B:错

答案:对

Discreteelementmethodcannotsolvethree-dimensionalproblems.（）

A:错B:对

答案:错

Finitedifferencemethodismoreefficientthanfiniteelementmethod.（）

A:错B:对

答案:对

Whichofthefollowingisnotanondeterministicanalysismethod（）.

A:NeuralnetworkmethodB:TimeseriesanalysisC:ThediscreteelementmethodD:Greysystemtheory

答案:Thediscreteelementmethod

WhichofthefollowingiswrongaboutUDEC（）.

A:BlockscandeformB:TheblockcanberigidC:TheUDECcalculationpreparationprocessiscomplexD:UDECcanbeusedinmilitaryactivities

答案:TheUDECcalculationpreparationprocessiscomplex

Whichofthefollowingisnottheapplicationareaoffiniteelementmethod（）.

A:PlateandshellproblemsB:entertainmentC:CivilengineeringD:biomedical

答案:entertainment

Whichofthefollowingsoftwareisnotbasedondiscreteelementmethod（）.

A:ANSYSB:BLOKS3DC:PFC2D/3DD:UDEC

答案:ANSYS

Continuousmediaanalysismethodsmainlyinclude（）.

A:FinitedifferencemethodB:FiniteelementmethodC:TheboundaryelementmethodD:Noelementmethod

答案:Finitedifferencemethod;Finiteelementmethod;Theboundaryelementmethod;Noelementmethod

Themainstepsoffiniteelementmethodtosolvetheprobleminclude（）.

A:Solvingelementstressandstrain,resultprocessinganddisplayB:ProblemdiscussionandsolutionC:Loadshifting,boundaryconditionprocessing,solvinglinearequationD:Structurediscrete,unitanalysis,integralanalysis

答案:Solvingelementstressandstrain,resultprocessinganddisplay;Loadshifting,boundaryconditionprocessing,solvinglinearequation;Structurediscrete,unitanalysis,integralanalysis

第八章测试

Sincethenecessaryinformationinputfordesignpredictionislimited,geotechnicalnumericalmodelsaremainlyusedtoexplainthemechanicalmechanismsaffectingthesystemcharacteristicsandtoperformsimpleexploratorycalculationsforengineeringdesign.（）

A:对B:错

答案:对

Onceblockcuttingiscompleted,materialpropertiesmustbeassignedtoallblocksanddiscontinuities.（）

A:对B:错

答案:对

Boundaryforcesandstressescanbeappliedtotheboundariesofrigidanddeformablebodies,butvelocity(displacement)boundariesapplyonlytorigid.（）

A:错B:对

答案:错

Itisveryeasytodeterminewhetherthestressstateformedinthejointmodelrepresentstheinitialstate.（）

A:对B:错

答案:错

Thebasiccommandsforcuttingblocksaremissing（）.

A:CRACKB:ROUNDC:JSETD:ARC

答案:ROUND

ThesystemunitofDensityis（）.

A:kg/m3B:NC:PaD:m/sec2

答案:kg/m3

Themore()thefilletlengthis,themore()theinitialunbalanceforceis.（）.

A:Small,smallB:Big,bigC:Small,bigD:Big,small

答案:Big,big

()Changetheblocktoisotropicelasticcharacteristics;()changestheblocktomoore-Coulombmodelandconsiderstheplasticproperties.（）.

A:Cons=0Cons=1B:Cons=1Cons=0C:Cons=1Cons=3D:Cons=0Cons=3

答案:Cons=1Cons=3

Themostefficientplasticmodelis（）.

A:Strainsoftening/hardeningM-CmodelB:DoubleyieldmodelC:M-CmodelD:D-Pmodel

答案:M-Cmodel;D-Pmodel

InwhichcaseUDECwilltakealongtimetoconverge:（）.

A:Thereisabigdifferenceinblockorunitsize.B:ThereislittlecontrastbetweenthestiffnessorpropertiesofblockmaterialandjointedmaterialC:ThereisasmalldifferenceinblockorcellsizeD:Therigiditiesorpropertiesoftheblockmaterialandthejointmaterialarequitedifferent

答案:Thereisabigdifferenceinblockorunitsize.;Therigiditiesorpropertiesoftheblockmaterialandthejointmaterialarequitedifferent

第九章测试

Accordingtotheconstitutiverelationofblockandjoint,theattributeparametersneededfornumericalcalculationaredetermined,andthemechanicalparametersoftheinterfacebetweenoverburdenrockandcoal-rockstratumaredeterminedaccordingtothephysicalandmechanicaltestdatainlaboratoryandfield.（）

A:对B:错

答案:对

Becausethenumericalsimulationiscarriedoutincomputersoftware,thereisnoneedtodeterminethedensitysimilarityratioandstresssimilarityratio.（）

A:对B:错

答案:对

Whenthenumberoflayerslaidbythephysicalsimilaritymodelreachesthesurfacedirectly,noadditionalforceisrequired.（）

A:错B:对

答案:对

Thegeometricsimilarityratioofnumericalsimulationis1:1.（）

A:对B:错

答案:对

Physicalsimilaritysimulationandnumericalsimulationarethesameinthematerialcollectionstep.（）

A:对B:错

答案:对

Innumericalsimulation,themodelboundaryeffectshouldbeconsideredandsaintVenant'sprincipleused.（）

A:错B:对

答案:对

Horizontalstresscalculationisusuallyexpressedbymultiplyingthelateralpressurecoefficientby（）whenhorizontalconstraintsareappliedtotheleftandrightboundariesofthemodel.

A:PrincipalstressB:GravitystressC:TheverticalstressD:Thetangentialst