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1、-------Subject：DevelopmentandApplicationofExperimentalSystemaboutMulti-angleDiffusionofRadioactiveRadoninLooseCoalSpecialty：SafetyScienceandEngineeringName：WangHui（Signature）Instructor：ZhangXinhai（Signature）ABSTRACTCoalisanimportantbasicenergyofChinaanditisanon-renewableresource.Coal
spontaneo
2、uscombustionisnotonlycausingalotofresourceswasted,butalsocreatinga
seriousthreattothesafetyproductionofthemine.Coalspontaneouscombustionusually
occursinthedepthsofthecoalmineandthefirepositioniscovert,thus,thedetectionofthe
coalspontaneouscombustionfiresourcepositionbecameamajorproblemtothemin
3、efire
work.Radonmeasuringmethodwasoneofthethedetectionmethodofthecoalspontaneous
combustionfiresourceposition,ithasachievedsomeresultsonfirepreventionandcontrol
work,domesticandforeignscholarshavestudiedradonmigrationlawincoalspontaneous
combustion,currently,scholarshavestudiedthemigrationlawo
4、fradioactiveradoninthe
verticaldirectionincoal,however,becausethefireinthecoalmineexistsinaspaceandthe
diffusionoftheradonisindifferentdirection,soifwestudythemigrationandadsorptionlaw
ofradioactiveradononlyinasingleverticaldirection,wewillnotmeettherequirementof
radonmeasuringmethodtodetectin
5、gthefiresourceandwealsocannotguaranteethe
accuracyofthedetectionresults.Therefore,weneedtotakefullaccountoftheradon
diffusionanisotropicinspace,weshouldresearchthemigrationlawofradioactiveradonin
thehorizontalandobliquedirectionsforfurther,thus,wecanperfectandexpandthe
migrationlawofradioactiv
6、eradon,providingareliablebasisforradonmeasuringmethodto
detectingthefiresource,sowecanimprovethedetectionaccuracyandeliminatefiresources
intime,bythiswecanensurethesafetyproductionofthecoalenterprises.Inthispaper,threestudymethodswasused,theyaretheoreticalanalysis,developmentof
experimentalsys
7、temandexperimentalstudyandtheywerecombinedtoconductingthestudy,
analyzingthegeneration,sourceandbasicnature,exploringtheinfluencingfactorsofthe
migrationofradonwhencoalspontaneouscombustionunderground,thendesigningand-----------万方数据----
