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AnalysisofTestingAirquantityDistributionoftheDipofWorkingFaceandCharacteristicsofAirLeakage

  

  1. (1FacultyofMetallurgyandMiningEngineering,KunmingMetallurgyCollege,Kunming650033,China;2FacultyofSafetyEngineering,NorthChinaInstituteofScienceandTechnologyCollege,Sanhe065201,HebeiChina)
  • Online:2020-04-03 Published:2020-04-03

Abstract: Inordertograspthecharacteristicsofairleakageingoafandtoformulatethemeasuresofleakingstoppage,athoroughtestingschemehasbeenformulatedinthispaper.Thepressureandenergydistributionandairvolumevariationintheinclineddirectionoftheworkingfaceweremeasuredandanalyzedbymeansofthecombinationofunitmethodandtracergas.Bydataanalysis,thelawofpressuredifferenceandairleakageintheworkingfacewasmastered,andthelocationandabsoluteairleakageingoafweredefined.Itcanprovidetechnicalsupportandguaranteefortheventilationmanagementinworkingfaceandpreventionandcontrolofspontaneouscombustioningoaf.

Key words: airleakage, pressureenergy, goaf, tracergas

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