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Table of Content
30 October 2018, Volume 34 Issue 5
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StudyonRelationshipbetweenFissureDevelopmentand#br# StateofSoilinExpansiveSoil
LIUWei1,YINQiong1,FANGNa2,CHENGYong1,LIUCong1
2018, 34(5): 1. doi:
doi:10.3969/j.issn.1009-0479.2018.05.001
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Thedegreeoffissuredevelopmentofexpansivesoilunderdifferentwettingcyclesisdifferent.Inordertofindouttherelationshipbetweenstressstate,expansiveforceandthedevelopmentdegreeoffinalcracks,theexpansivesoilsfromPuzheheiAirportinWenshanBasin,YunnanProvince,weresampledandtestedunderdry-wetcycling.Theresultsshowhattheultimatecrackdevelopmentdegreeofexpansivesoiliscloselyrelatedtotheload.Theaveragecracklengthperunitareadecreasesfrom15317mm/10cm2under5kPaloadto10558mm/10cm2under40kPaload.Underthesameload,theaveragecracklengthperunitareaispositivelycorrelatedwiththeexpansiveforce,andtheexpansiveforceofsoilsampleis1276.KPacorrespondingto9783mm/10cm2 increasedto3952kPaofsoilsampleswellingforcecorrespondingto11391mm/10cm2.Theresultsshowthattheultimatecrackdevelopmentdegreeofexpansivesoilisrestrictedbyloadandisrelatedtoitsownexpansiveforce,whilethecrackdistributionisaffectedbywatercontentgradientdistribution.
EvaluationonSlopeStabilityof1#MajorGrooveDumpinDahongshanCopperMine
WUDong,DENGLiang,YANGZ
2018, 34(5): 7. doi:
doi:10.3969/j.issn.1009-0479.2018.05.002
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Thestabilityoftherockslopeofthe1#majorgroovedumpisdirectlyrelatedtothehumanslifeandpropertyinthisarea,soitiscriticallyimportanttomakethesafetyevaluationoftherockslope.The1#majorgroovedumphasbeenusedfornearly10years.Inordertoensurethesafeuseandslopestabilityofthe1#majorgroovedumpinthelongrun,FLAC2D andGeo-slopeareusedtosimulatethestabilityofthewasterockdumpslopeaccordingtotheengineeringgeologicalconditions.Simulationresultsshowthatsafetyfactorsofthewasterockdumpslopecanmeettherequirementofsafetygradeunderthenaturalstateandearthquakecondition,atthesametimethestabilityagainstslidingandstabilityagainstoverturningoftheblockingdregsdamalsomeettherequirementofthestandard.Sothedumpslopeisstablewithsomesecurityreserve,whichillustratesthattheoriginaldesignofheaprowofthewaste
rockdumpisfeasibleandrationaltoacertaindegree.Theresearchgivesinsighttoanalyzingthestabilityof1#majorgroovedumpandthecheckandacceptanceofsoilandwaterconservationfacilitieslateron
GeochemicalindicatorsofPaleosalinit
CHENGYong1,2,XIANGDan3,ZHUQian3,SONGHuaxing4
2018, 34(5): 13. doi:
doi:10.3969/j.issn.1009-0479.2018.05.003
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Paleosalinityisofgreatsignificanceforrecoveringpaleogeographicenvironmentinsedimentaryperiod,recognizingthechangesandmechanismofpaleo-environment,learningaboutthedevelopmentofsourcerocksandorganic-richshales.Usinggeochemicalparameterstoindicatepaleosalinityisamatureandreliablemethod.Severalgeochemicalmethodscommonlyusedofpaleosalinityrecoverywereinroducedinthispaper,suchasBoronelementmethod,theabundanceandratioofelement,elementscatterplot,iotopeandsedimentaryphosphatemethod.Inaddition,thelimitationsandproblemsthatshouldbepaidattentiontointheirilizationwerealsoanalyzed.
OptimizedDesignofVentilationSystem forSmallandMedium ComplexOreGroups
DONGJuan,LINJifei,KUANGShihua,WANGYujun,XIAJianbo,CHENGYong
2018, 34(5): 19. doi:
doi:10.3969/j.issn.1009-0479.2018.05.004
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IntheprocessofminingdesignofacopperoregroupinWenshaninYunnanProvinceofChina,wedeterminedthemineventilationsystemplanfromaglobalperspectivebasedonthetruethreedimensionalsolutiontotheventilationnetworkforeachorebodyinthegroup.WeproposedapulloutmechanicalventilationsystemwithonewingreturnairandthatwithtwowingsreturnairintheprocessofdesigningthelowersectionoftheNo.1orebody.Throughnetworksolutionandtechnicalandeconomic
comparisonofthetwoschemes,theresultsshowedthatscheme2(namely,theventilationsystemwithonewingreturnai)savedtheventilationcostof2761800yuanthanscheme1(theventilationsystemwithtwowingsreturn),soitisrecommendedthatmineusescheme2asthemineventilationsystem.Inthispaper,theoptimizeddesignideasandresultsoftheventilationsystemforsmallandmediumsizedcomplexorebodiescanprovidereferenceforsimilarmineproduction
ApplicationandComparativeAnalysisoftheWeightedGreyModelinGoafSubsidenceMonitoring
WANGJianying1,HUANGDewu2
2018, 34(5): 23. doi:
doi:10.3969/j.issn.1009-0479.2018.05.005
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Withsubsidencemonitoringofthegoafastheresearchobject,themonitoringdataweremodeledandanalyzedbyusinggreymodelGM (1,1)andweightedgreymodelPGM (1,1)inthegreysystemtheory.Twoifferentweightingschemes,namely,thatadoptingtheminimummeanvalueofrelativeerrorabsolutevalueandthatingtheminimummeanvalueofthesumoftheabsolutevalueoftheerror,reflectthecontributionrateofeachmonitoringvaluetothemodel,whichismoretimelinessthanthetraditionalequalweightmodel.Combinedwithengineeringexamples,thefeasibilityandreliabilityofdataprocessingandanalysisofsettlementmonitoringdataingoafusingthegreytheoreticalmodelwereverified.Inparticular,intherelativeerrorabsolutemeanminimummethod,whetherfromthefittingaccuracyorshort-termprediction,PGM(1,1)isbetterthanGM(1,1)model,anditsapplicationisworthstudying.
DenoisingMethodofBuildingLaserPointCloudObtainedfrom GroundFixedStatio
MAJuan1a,LONGGen2,ZHAOWenliang1b,SUNXiaoli3,
2018, 34(5): 30. doi:
doi:10.3969/j.issn.1009-0479.2018.05.006
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hispaperanalyzesthecharacteristicofbuildinglaserpointcloudobtainedfromgroundfixedstation,andproposesthreetypesofnoisedataofbuildinglaserpointcloud.Accordingtothedifferenttypesofnoisedata,itusesthevisualinteractivemethodandthebilateralfilteringalgorithmbasedpointcloudmodeltoconstructabilateralfilterforacomprehensivetreatment.Theexperimentalresultsshowthatthismethodcaneffectivelyeliminatethenoisedataofbuildingfacade.
ApplicationofUnmannedAerialVehicle(UAV)TechnologyinReal#br# EstateSurveyingandMapping
LIDongsheng1a,2,ZHANGBingliang3,WANBaofeng1a,QIUPengrui
2018, 34(5): 35. doi:
doi:10.3969/j.issn.1009-0479.2018.05.00
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Traditionalestatemappingisusuallyperformedwithatotalstationassistedwithhandheldlaserranger,whichisslowinmanipulatingspeedandexpensiveinhumancost.UAVobliquephotographytechnologyisatechnologydevelopedinrecentyearsinwhichphotogrammetryisusedtocollectdata.Throughtheafterprocessingmodelsoftware,itispossibletobuildthehouse3Dmodelandtoacquirethehousetexturecharacteristics.Thispaperusedobliquephotogrammetrytoconstructa3DmodelofruralconstrutionlandthroughhousingsidedataacquisitionwithTsinghua3Dsoftware.Then,itcomparedthecollecteddatawiththemeasuredlengthofthehousingbyhandheldlaserranger.Fromtheresults,itcanbasicallymeettheaccuracyrequirementof1∶500realestatecharts.
StudyonProcessParametersofAsymmetricHydrogenationofCamphorbyNickelOxideCatalystunderAtmosphericPressure
ZHANGRunhua,LILib,NINGMencui
2018, 34(5): 41. doi:
doi:10.3969/j.issn.1009-0479.2018.05.008
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Consideringthehighhydrogenationactivityandasymmetricselectivityofnickelmetal,theasymmetricreductionofcamphorintoDborneolwascarriedoutinNiO/alcoholsystem.Certaineffectsofintheprocesswereinvestigatedsuchascamphordosage,catalystamount,reactiontime,reactiontemperatureandpotassiumhydroxide/sodiumbromidedosageontheyieldofborneol.Theexperimentalreultsindicatedthatontheoptimalreactioncondition,theDborneolproducedreachedthehighestinNiO/alcoholsystemwhenthecatalystamountis52mmol,thecamphordosageis66mmol,reactiontemperatureis50℃,reactiontimeis5h,andpotassiumhydroxide/sodiumbromidedosageareinthemoleproportionof128∶1.
StudyontheTechnologyofRuralDispersedSewageTreatmentSystem:ACaseonXiaobaVillage
WUYanshenga,LIYanb,GAOXionga,CHENGYongweia,
2018, 34(5): 45. doi:
doi:10.3969/j.issn.1009-0479.2018.05.009
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Ruralenvironmentalproblemshavebecomeincreasinglyprominent.XiaobaVillageinFudongTown,YunnanprovinceisapovertyalleviationtargetofKunmingMetallurgyCollege,andpeoplesproductionandlivingherehavebroughtagreatimpactonthelocalenvironment.Duetothelackofvillagesewagetreatmentsystem,alargeamountofdirectlydischargedpollutionhasaffectedthewaterqualityofLancangriver.InordertoeffectivelycontrolthewaterpollutionsourcesinXiaobavillage,comparisonoffourkindsofsegetreatmentssuchasoxidationpondsarecarriedoutbasedonthelocalconditionsandtopographicalfeatures,andfinallythecorrespondingschemeisputforward
ResearchandApplicationofEcologicalTreatmentofRuralDomesticWastewater
WANGLin,LIRan,PENGLi
2018, 34(5): 51. doi:
doi:10.3969/j.issn.1009-0479.2018.05.010
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Thepapershasanalyzedtheprocessandapplicationofdomesticwastewatertreatmentinruralareas.Itfocusesonthecomparisonofseveraltreatmentsuchas“fiverings”ACGMP(anaerobic,constructedwetlands,geneticengineeringofrice,microorganism,pond)sewagetreatmentsystem,artificialecologicalwetlandtechnology,soilinfiltrationtreatmentsystem,towerearthwormecofiltersystem,under
groundmicropoweredoxidationditchwastewatertreatment.Throughtheanalysisontheadvantagesanddisadvantagesofeachofthetreatments,itcouldgiveinsighttotheecologicaltreatmentofdomesticsewageinruralareas
AnalysisonImprovingtheQualityandEfficiencyoftheKunmingNo.3WaterPurificationPlant
RENYouchang1,ZHAODeshuang2,CHENGYongwei1,PENGYi
2018, 34(5): 56. doi:
doi:10.3969/j.issn.1009-0479.2018.05.011
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ThispaperfocusesonanalyzingtheoperationconditionoftheKunmingNo.3WaterPurificationPlantin217,andcalculatingpollutantreductionsuchasN,P,etc.afterimplementingClass-AandClass-BdischargelimitsipulatedonDischargeLimitsofMajorWaterPollutantsofKunmingMunicipalSewageTreatmentPlant.ItisconcludedthatitcanincreaseamountofTNreduction327.86tandTPreduction3.14tonthebasisofpollutantreductionin2017whileClass-AdischargestandardisimplementedbytheKunmingNo.3WaterPurificationPlant;anditcanincreaseamountofTNreduction25.66twhileimplementingofClass-Bdischargestandard,butitcannotincreaseamountofTPreduction.Therefore,itisadvisedtotakeClass-Adischargelimitastheupgradingtargetofaforementionedwaterpurificationplanthttp: //dict.youdao.com/w/aforementioned/javascript:void(0);.Atthesametime,thepaperdiscussesimprovingmethodsofP-removalandmeasuresforimprovingthequality
andefficiencyofthesewagetreatmentsystem.Itisthereferenceforupgradinginnovationofwaterpurificationplant.
KineticsandThermodynamicsforIonExchangeofFormicAcidonWeakBasicAnionExchangeResin330
LIDongli,TANYanxia,WANGPeng,ZHULin
2018, 34(5): 62. doi:
doi:10.3969/j.issn.1009-0479.2018.05.012
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Theformicacidinwaterwasseparatedbyweakbasicanion-exchangeresin330.Thedynamicsandthermodynamicsoftheadsorptionprocessofformicacidwereinvestigated.Thermodynamicresultsindicatedthattheadsorptionprocedurewasaspontaneousexothermicprocedure.Alowertemperatureisadvantageoustotheadsorption.ThekineticsresultsshowedthatthepseudosecondorderequationcoulddescribethesorptionprocessexactlyandtheadsorptivebalancedatawerecorrelatedwelltoFreundlichequation.Therateofadsorptionismainlycontrolledbythefilm diffusion.Theexperimentalresultsprovidesometheoreticalguidancefortheseparationoflowconcentrationformicacidindifferentsystems.
AnalysisandImprovementMeasuresoftheMedianStripSightDistanceofaHighwayinYunnanProvince
PENGYi1,XUDawei2,TIANBijiang2,CHENGYongwei
2018, 34(5): 68. doi:
doi:10.3969/j.issn.1009-0479.2018.05.013
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Intheprocessofdesignandoperationofhighways,therightlateralcleardistancecangenerallymeettherequirementofsightdistance,buttheleftlateralcleardistancemaynotduringparkingbecauseoftheimpedimentfrommedianstrips,whichtherefore,needscorrespondingattentionfromhighwaymanagementadministrations.Tosolveproblemofthiskind,thepaperhastakentheconstructionprojectofahighwayinYunnanProvinceasanexample.Lateralcleardistancecalculationmethodandthesightdistanceenvelopediagramareusedtocheckthemedianstripsightdistanceintheantiglareplantsandantiplates.Thispaperanalyzestheshortageofthedesignofmedianstripsondividedhighwaysandtheleftsightdistanceimpediments,andputsforwardcorrespondingengineeringmeasuresforreferenceforsimilarprojects,includingadjustingthealignmentindicator,increasingthewidthofthemedianstrips,adoptingspeedcontrolmeasures,andchangingthewayofantiglare,etc
OntheDrivingSightDistanceastheQualityIndexofHighwayUse
LIUHongbo
2018, 34(5): 73. doi:
doi:10.3969/j.issn.1009-0479.2018.05.014
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Sightdistanceisthenecessarysafedistancefordriverstotravelontheroad.Theimportanceofdrivingsightdistanceasaqualityindexofroadusehasbeenexpoundedtofurtherclarifytheimporanceofparkingsightdistaceintheroaddrivingprocess.Referringtothereasonablecalculationmethodandcombiningwiththerequirementsofthecode,thedataofvariousinfluencingfactorsarecomparedtodeterminetheinfluenceofvariousfactorsintheparkingsightdistance.Throughthecomparisonofconclusions,itisfoundthatthecalculationofsightdistancecannotadoptasingleanddogmaticfixeddesignvalue,butshouldcomprehensivelyconsidertheinfluenceofspeed,reactiontime,frictioncoefficient,longitudinalslopeandsomeotherfactors.Separatedanalysisandcalculationonsightdistanceshouldbeconductedinspecialsections,andsomepracticalandeffectivelytargetedmeasuresonensuringdrivingsafetyarethenputforard
ExperimentalStudyontheStrengthofCementedTailingsandWasteRockBackfill
LUPing
2018, 34(5): 77. doi:
doi:10.3969/j.issn.1009-0479.2018.05.015
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AlargenumberoftailingsandwasterocksinthewastedumpfoundationofametalmineinYunnanProvincearedifficulttocleanup,resultinginpoorstabilityofthefoundation.Themethodofgroutingreinforcedbodiesisproposed.Inordertogetthebasicparametersofgroutingreinforcementandreducetheblindnessoftheconstruction,thesimulateexperimentofthecementedstrengthwascarriedoutindoors.Thecompressionstrengthandshearstrengthexperimentswerecarriedoutoncemented
tailingswithdifferentagesandoncementedwasterockswithdifferentwatercementratio,andtheanalysisontheirstrengthcharaceristicswasalsoconducted.Atthesametime,therelationshipbetweeninfluencingfactorsandstrengththatcanprovideareferenceforpracticalengineeringapplicationisestablishedviathenondimensionalanalysismethod.
PerformanceAnalysisofHydraulicHybridVehicleBasedonRuleEnergyManagementStrategy
ZHOUPeng1,YANGJing2,KANGNan2
2018, 34(5): 82. doi:
doi:10.3969/j.issn.1009-0479.2018.05.016
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Themathematicalmodelswereestablishedbasedonthekeycomponentsofthetraditionalvehicleandhydraulichybridvehicle.ThesimulationmodelwasbuiltundertheMatlab/Simulinkplatform.Theenergymanagementstrategybasedonruleswereproposedandanalyzedandfourmodesweredesignedcorrespondingly.ThecontrollogicofitsmodeswereimplementedintheSTATEFLOW module.Simulationresultsshowedthattheprogramcouldmeetthetotalpowerdemandsandtheengineraninthebestfueleconomyarea.Thefueleconomyofthehydraulichybridvehiclewasimprovedbycomparingfueleconomycurves
DesignandOptimizationofHubspokeExpressNetwork
DUANLimei
2018, 34(5): 89. doi:
doi:10.3969/j.issn.1009-0479.2018.05.017
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Consideringthetransportmodesofexpressnetworkscouldbeimpactedbydifferenttrafficconditions,differenttransportmodesareconvertedintothediscountfactormatrixeswithrespecttothetrunklinenetworkincludedinthehubspokenetwork.Tominimizethetotalnetworkcost,singleallocationhubspokenetworkmodelisimproved.Theresultsfromthreenuericalexamplesdemonstratethattheef
fectivenessofthehubspokeexpressnetworkmodel,theimpactontotalnetworkcostsbythegivennumerofhubs,andtheimpactonexpressdeliverynetworkbythechangesofdiscountfactormatrix.
OrganizationandImplementationofCaseTeachinginDigitalTopography
CHENGXiaojun,LIUChun,WUHangbi
2018, 34(5): 95. doi:
doi:10.3969/j.issn.1009-0479.2018.05.018
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Basedontheanalysisofcourseknowledge,DigitalTopographydesignscaseteaching,drivenbyproblems,withstudentsasthemainbodyandteachersastheguidingrole,encouragingstudentstothinkindependently,strengtheningcommunicationbetweenteachersandstudents,andcomprehensivelypromotingstudentsprofessionalqualityandability.Theresultsfromtheimplementationprocessareevaluatedthroughactualteachingconduct.
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