24国际矿加 The Possibility of Outburst Origin in Long Mine Workings

24国际矿加 The Possibility of Outburst Origin in Long Mine Workings

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时间:2019-07-17

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1、ThePossibilityofOutburstOrigininLongMineWorkingsv.Hudecek,J.Lat,P.Michalcik,P.UrbanFacultyofminingandgeology,TechnicalUniverzityofOstrava,Ostrava,TheCzechRepublicEmail:vlastimil.hudecek@vsb.czABSTRACTProblemsofsuddenoutburstsofrockandgaspresentindeepmineminingonesofthemos

2、tcomplicatedinterrogation.Itissearchingforthemethodsofpredictionandprognosisthatcanbemostusefulforthegov-emmentofthesephenomena.TillflOWthepressureandthedesorptionofgasinboreholeswascon.sidertobethedecisivecriteria.Bytheworkofauthorswithusingofstatisticaldatewasverifythat

3、forconsiderablereliabilityofforecastandpreventoutburstsisnecessityinvestigatecharacteristicsofworkplaceandotherindicators.Theseindicatorswereanalyzingandassemblageintomathe.maticaldependenceswhichrepresentactiveandpassiveforceassertingwithintheprocessofrush.Itwasvalidated

4、byusingtheequationswhichalepresentedinthemanuscriptthattheaccuracyofpredictionofthephenomenaishigherandmethodsofpreventionsarebetteralso.NTRODUCTIONProblemsofrockandgasOHtburstsarestilltopical.Accordingto(LatJ,2006)andothersources,thishazardisveryseriousinmanycountries,fo

5、rexampleinChina,Ukraine,intheareaofKemerovo(Russia)。Poland.IntheframeworkofsolvingthegranttaskNo.GACRl05/05,0l3.VSB.TUOstravaCzechRepublicwefocusedourattentiontothemethodsofforecastingthementionedphe.nomenontoo.Fromthedetailedanalysisoffor-ecastingmethodsintheCzechRepubli

6、caswellasabroaditfollowsthattheexistingmethodsdonotexpressapossibilityofoutburstoriginwithsufficientreliability.THEANALYSISOFS1iATlSTICALDATABythepreviousanalysisofstatisticaldatafromthePaskovMine.Sta瑜plant,itwasprovedthatindicators(gaspressureandinitialdesorptionrate),wh

7、ichparticipateddecisivelyintheforecastofhazardofcoalandgasout.burstsandinthepreventionofthisgas.dyna.micalphenomenon.indicatedallincreasedhaz.ardoftheoriginofcoalandgasoutbursts(hen.ceforthreferredtoasCG01onlyinasmall4396numberofoutbursts.Inacaseofmeasuringthepressureofga

8、ses,over-limitvaluesabove250kPa.indicatingallincreasedhazardofCGO.wererecordedmerelyin34cases.wh

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