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1、Subject：DesignandApplicationofWirelessMonitoringandWarningSystemofDafengMineFire-areaSpecialty：SafetyEngineeringName：WangMeng（Signature）Instructor：DengJun（Signature）ABSTRACTCoalfieldfireiswidelydistributedaroundtheworld,fromChina,India,America,Russia,CentralAsiaandothe
2、rcountriesandregions.Duetothespecialgeographicallocationandclimaticconditions,thecoalfieldspontaneouscombustioninChinaisamongthemostseriouscountriesintheworld.ItisestimatedthattheeconomiclossesofChina'scoalfieldfireisatleastRMB200billionperyear.Theexistingtemperaturemo
3、nitoringtechniqueofthecoalfieldfireismainlybymeansofartificialmonitoring.Astemperaturemonitoringpossessestheshortcomingsofpoint-contact,smallforecastrange,heavyworkloadofinstallationandmaintenance,failingtoprovidereal-timemonitoringandearlywarning,especiallytheeasydama
4、geofprobeandlead,itisrestrictedinpracticalapplicationsduetotechnicalandeconomicconstraints,whichleadstotheinfeasibilityofwidelyusedforfiredetection,henceitcannotbewellpositionedtomeettherequirementsofcoalmineproductionsafety.TheCharactersofspontaneouslycombustedcoalfie
5、ld,suchasinvisibility,scatteredignitionpoints,remotedistanceandothercharacteristics,makecoalfieldfireprevention,monitoringandcontrolextremelydifficult.ThemonitoringmethodoftheWirelessadhocnetworktechnologycombinedwiththetemperaturesensorisanewdevelopmenttrendinrecentye
6、ars.Ithaschangedthetopologyofthetraditionaltemperaturesensorsystemtomeettheadditionalapplicationsofthetemperaturemeasurement.DafengmineminingTaixicoalisveryrareinChina,withthequalityanthraciteof"threelow-sixhigh"characteristics.ForDafengminecoalspontaneouscombustion’st
7、imelonger,thefire-aerareachedthousandskm2,nationalresourcessufferedgreatloss.Meanwhile,thefire-aeraforminghightemperaturebringsaboutseriousimpacttocoalminingandsafetyinproduction.Inordertominethecoalresourcesofthehightemperatureassoonaspossible,Dafengminecooperatedwith
8、Xi’anUniversityofScienceandTechnology,presentedthestudyofWirelessMonitoringandWarningSystemofDafengMineFire-area,achi
