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    Vo1.35No.42008MININGSAFETY&ENVIRONMENTALPROTECTIONAug.2008

    ;EnglishAbstractsofThisIssue

    ;NumericalSimulationof’’Three-zone”Distributionin

    ;MultipleLeakageGobf11Inordertounderstandthe

    ;distributioncharacteristicsof”three—zone”inmultipleleakage

    ;gob.numericalsimulationon”three—zone”distributioningob

    ;withmultipleleakagepassagesanditsinfluencingfactorswas ;madeonthebasisoflimitairvelocityandbyusingventilation ;networktheory.Theresultsindicatedtllattheleakagevelocity ;fieldofmuhisourceandmuhicongruencegobisevidently

    ;differentfromthatofonesourceandoneCongruencegob,the

    ;patternof”three-zone”isirregular,withalargervaryingrange. ;Thenumberandpositionoftheleakagesourcesandcongruence ;havegreatinfluenceoneshapeanddistributionof”three—

    ;zone”

    ;.Thefartherthedistancefromsourceandcongruenceto ;workingfacethewiderthewidthofoxidationzone.The ;simulationresultsaregoodcorrespondencewiththepractice. ;MethodforDeterminingReasonableHoleArranging ;ParametersinGasDrainageandExtractionbyHorizontal ;HolesalongSeam(5)--Througheoreticalanalysisofgas

    ;seepageprocessincoalseams,amobilemodelofgasdrainageand ;extractionwassetupandcalculated.Amethodfordetermining ;reasonableboreholeparametersofgasdrainageandextractionwas ;proposedbyutilizingthesimulationanalysissoftwareofgas ;drainageandextractionvaluesincoalmineandcalculationwas ;madeonsomeexamples.Theresultsshowedthattheuseofthis ;methodcandeterminereasonableboreholearrangingparameters ;ofparallelholesalongseamforgasdrainageandextraction.Andit ;canbeusedtoguidecoalproduction.

    ;StudyonFactorsInfluencingProtectiveEffectofProtected ;Seamf81Onthetheoreticalbaseofextractingtheprotective ;seam,thispaperanalyzedtheprotectivemechanismofthe ;protectiveseambyutilizingthetheoryofthekeyseam,defined ;therelationamongtheprotectiveeffectiveness,thehardrock ;stratumbetweenseamsandtheintervalbetweenprotectiveand ;protectedseams,putforwardtheconceptionofshort-intervalcoal ;seamsgroup,mediumintervalcoalseamsgroupandlarge

    ;intervalcoalseamsgroup,andpointedoutthatdifferentauxiliary ;meanscanbeusedtoimprovetheprotectiveeffectivenessin ;differentrelativeseamintervals.

    ;ResearchonDeformationofDeepHighStressSoftRock ;RoadwayWithSireulationofSimilarMaterialsf11)The

    stresssoftrockroadwaywas ;sinfilarmaterialmodelfordeephigh

    ;setupaccordingtosimilaritytheoryandthegeologicconditionof ;surroundingrockofroadway,theexperimentalstudyofsimilar ;materialsimulationwasmadeonthedeformationregularityand ;thedestructioncharacteristicofdeephighstresssoftrock

    ;roadway,andthedeformationofroofandfloor,therelative ;deformationoftwosidesanddeformationofdeepsurrounding ;rockweremeasured.TheDeformationregularityofdeeproadway ;underhighstresswasobtained,andthedeformationreasonof ;surroundingrockwasdiscussedbasedonexperiments. ;PreventionofSulfateAttackonMiBeCementedFillin2Body ;f141Theuseoftailingssandgeneratedintheoreextraction ;processastheaggregateofcementedfillingbodycannotonly ;economizethefillingeosLbutalsobefavorabletotheprotectionof ;peripheralenvironmentoftheminingarea.Thispaperanalyzed ;theattackmechanismofsulfateduetotheoxidationofthesulfides ;inthetailingssand,andproposedsomefeasibleengineering ;measuressuchastheuseofpozzolancemenLthereductionof ;long~imeexposureoftailingssandtotheairandtheadditionof ;industrlalflyashinordertoreducethedisadvantageousinfluence ;ofthefillingbodyslong-termstrengthcausedbythesulfatewhich ;isgeneratedintheoxidationprocessofsulfides. ;ExperimentResearchofMucussStimulativeEffectt0 ;ShallowHoleDrainage(16)Thr0ughinvestigationandstudy

    ;ontheheadingfaceofcoalroadwayasimulatedgasdrainage ;systembyshallowholeswasestablishedinthelaboratory.Is ;papergivesaseriousanalysisonthefactorsaffectingthe ;drainageeffectivenessbyshallowholesandputforwardanew ;thinkingofholepackingbymucus.Bythesortingoutand

    ;analysisoftheexperimentaldata,relationshipcurveofmucus ;volumeandultimatenegativepressureisgmned,whichprovides ;theoreticalbasisforsitejob.

    ;EvaluationofWaterFlowabilityandGroutabilityofF?Fault

    ;inBanjiMiBef22Thepermeabilityorwaterfiowabilitvofa ;faulthassignificantinfluencesontheconstructionspeedand ;workingsecurityofundergroundroadways.Accordingly,itis ;necessarytofindoutthepermeabilityofthefaultandthe ;replenishmentabilityofefaultobtainingundergroundwater

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