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:1003-5923(2002)01-0040-03,,,(,221008):,,,,,:;;:TD322:A,(),,,,,,,113#12,1309-345-442m,+26m13#1(1)[1](1),G;C,kNöm3;H,m;Rc,kPa13#G1.351.47G=CHRc0.40.5(1)1130913#,,2347mm,1962mm35,,9.25m20.52.0m22,,,,:;333:2001-06-21:(1966),,,,,333,,,,()8,70,2,042002.12313091;2;3;4;52,13093,,,,=3.2m4.2m2.5m,12#,0.5mUDEC3.0,,14,4,,,,,,6m,5m,541;251;2;3;436,130961;215;3;4;5;6;7(1),10m,56m,142002.1(2),7,5m,3642mm2450g,1.5m71;2;3;4(3),,1309,,,78%50m,1300mm386mm,70%;997mm515mm,48.3%,4(1),,(2),(3)UDEC:[1],.[M].:,1994.(39)115S0öSt=1.11,1.25,1.43,1.67,2.00215S0öSt=1.11,1.25,1.43,1.67,2.00:S0StW=S0Stc=S0St=1.67,pz2=0.36MPa,S0StW=1,S0Stc=1.67,pz2=0.064MPa,5.6,,,:[1].[J].,1993,(3,4):170-177.[2].[D].:,2000.37-69.242002.1ENGLISHABSTRACTSKeytheoryandtechniqueofcoalentryboltsupportingHOUChao2jiongThispaperexpoundsthekeytheoryandtechniqueaboutdevelopingcoaldriftboltsupporting,whichmainlycon2tained:thetheoryofconsolidatingrockstrengthwithboltsupporting,thehighstrengthboltsupportingsystem,boltingdynamicsystemdesignprocedures,coalroadwayboltingun2derthedifficultyandcomplexconditions,bigösmallstruc2turesstabilitytheoryofroadwaysurroundingrockdrivena2longgoafinfullymechanizedtop2coalcavingface,etc.Someviewsandadvicesofdevelopingboltsupportingcoaldriftareputforward.Studyonparametersoftopcoalfracturedamageinfullymechanizedtop-coalcavingfaceJINZhong2mingetc.Accordingtomaterialdamagecharacteristicrelation,therelationbetweenthedamagevariation,damagecoefficient,coalmassconstantandthefracturestrengthofcoalmass,miningdepthandchangerelationofdamagevariationinad2vanceprocessofworkingfaceareobtainedbythreedimensionfracturetestofbigcoalsample,topcoaldeformationobserveinworkingfaceandfiniteelementnumeralanalysis.Theconclusionsshowthatthechangelawofdamageparametersisreliable.ChangeofdamagevariationDisexponentialfunc2tioninadvanceprocessofworkingface.Thislawisimpor2tantsignificancetoforecastabutmentpressuredistributionandtopcoalcavingfeature.Thedesignandpracticeondistressingengineeringofminingsoft-rockroadwayHEFu2lianetc.Gob2sideentriesoffullymechanizedtop2coalcavingfacemostlyareminingsoft2rockroadways,whereroadwaysde2formationdestructionisintenseandmaintenanceisdifficult.Thispaperputsforwardthegeneralschemeoftechnologyabouthowtoperformdistressingengineeringoffullymecha2nizedcoalwinningandcavingdriftsonthebasisoffield2siteinvestigation,accordingtopracticalproductionconditionofgeologyofXinjiMine.Throughcomputernumericalsimula2tion,thespecifictechnologyparametershadbeendesignedanddetermined.Practiceprovedthatthedesignedparame2terswerereasonableandpracticable,andremarkableecono2myandtechnologybenefithadbeenobtained.DevelopmenttestoftheroadformedalongnextgoafbylongwallminingtotheriseXIONGRen2qinetc.BasedontheprofitabletestofHulueMinebylongwallminingtotheriseandthestratabehaviorsmeasurementoftheroadformedalongnextgoaf,themechanicalprincipleoftheroadsupportisanalyzed.Itisexplainedthatthegoodef2fecthasbeenobtainedthroughsuccessfullyusingclosed2standingsupportsandwastewallassupportbesidetheroad2way.DiscussiononundergroundlongwallminingmethodforextractionofIndianshallowthickcoalseamsunderhardroofrocksJIANGFu2xingetc.Thispaperpresentsatechnologicalplan-acombinedlongwallminingmethodintegratedfullymechanizedlongwallminingalongseamfloorfirstwithfullymechanizedlongwallsublevelcavingminingafterwardsaccordingtotheconditionsofIndianshallowthickseamsunderhardroofrocksandprovesitsadvantagesandfeasibility.Italsointroducesamethodformonitoringthelocationoffracturinglineofhardroofrocks.Themethodisofimportantvalueforapplicationinpreventingthedynamicimpactwhenhardroofweightingoccursandensuringthesafeproduction.ThekeytechnicalproblemsandtheirsolvablewaysofmechanizedcoalmininginhighinclinedseamWUYong2pingBasedontheanalysisofitspastrecordsandcurrentsitu2ationsabouthighinclinedseammining,thepaperprobesintothekeytechnicalproblemsandputsforwardthesolvablewayscombinedwiththepracticesoffullmechanizedcoalminingathomewhichappliedinhighinclinedseam.Criticalcatastrophicanalysisofinstabilityofcombina-torialkeystratainshallowcoalseamXIESheng2huaetc.Inthispaper,themechanicalmodelofcombinatorialkeystrataisanalyzedwiththehelpofthemethodofcatastrophetheory.Theexpressionofthetotalpotentialenergyfunctionforthissystemisderived.Thissystemcanbedescribedbythecuspcatastrophemodel.Thebifurcationsetwhichmakesthissystemtolossitsstabilityofthecombinatorialkeystratainthehorizontalandverticalforcecontrolspaceisobtained,stepsinkingconditionsofroofanditsstructurestabilityarequantitativelyanalyzed.Itisprovedthattheresultispracti2cal.Movingfeaturesoftop-coalanditsroofstratainhardthick-top-coalfullymechanizedcavingfaceSUOYong2luetc.Baseduponthesite2surveyingthemovingfeaturesofthetopanditsrooftrataaswellasthefallingconfigurationofthetop2coalinhardthick2top2coalfullymechanizedcavingfaceafterpre2weakennedthetop2coalareanalysizedandsumma2rized.Ithasbeenfoundthattopre2weakenthetop2coalmakestherangeoftop2coalanditsroofstratamotionin2crease,theroofstratabreakingstepdecrease,thetop2coalfallingangleincrease,theblocksizefallentop2c