资源描述:
《浅析煤自燃火灾的原因、预报技术及防治措施-毕业论文外文翻译》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、附录:外文资料与中文翻译外文资料:Analysisofthespontaneouscombustionofcoalcauseofthefire,forecastingtechniquesandpreventionmeasures1IntroductionMinefireisthemajornaturaldisastersincoalmines.SpontaneouscombustionofcoalisthemainformoftheminefireinChina'sstate-ownedkeycoalmines,morethan56percentofth
2、eminethereisthedangerofspontaneouscombustion,firescausedbyspontaneouscombustionofcoalaccountedformorethan90%ofthetotalnumberofminefires[1].Inrecentyears,mechanizedminingthetopcoalcavingtechnologyhasbeenvigorouslypromotionandapplicationofasubstantialincreaseincoalproductionefficie
3、ncy,butthecavingheightandlarge,leftoverfromthegoafresidualcoal,seriousairleakage,makingthemineofcoalspontaneouscombustiontooccurfrequently,hasbecomeoneofthemainfactorsrestrictingtheminesafetyinproductionandfurtherdevelopment[2].DistrictofXinjiang,Ningxia,InnerMongolia,thereisstil
4、lalargeareaofthecoalfieldfires,burningcoalamount1000-1360tonsperyear,theeconomiclossesofmorethan20billionyuan[3-4].Spontaneouscombustionofcoalproducesalarge33numberofSO2,H2S,COandCO2gas,theseriouspollutionoftheenvironment;coalfieldfiresalsocausedalargeareaofdamagetovegetation,soi
5、ldesertification.2SpontaneouscombustionofcoalcauseanalysisCoallargelybytheorganicandinorganiccomponents,themaincombustibleelementscarbon(about65%~95%),followedbyhydrogen(about1%to2%),andcontainingasmallamountofoxygen(about3%to5%,sometimesupto25%),sulfur(about10%),theaboveelements
6、togetherconstitutethecombustiblecompounds,knownasthecombustiblematterofcoal.Inaddition,coalalsocontainssomenon-combustiblemineralash(5%to15%,alsoupto50%)andwater(generallybetween2%to20%change),thesesubstancesiscalledainertingofcoalnature.Coalbytheoxygenintheairoxidationistherootc
7、auseofthespontaneouscombustionofcoal.Carbon,hydrogenandotherelementsinthecoaloccursatroomtemperature,thereactionofthecombustibleCO,CH4,andotheralkanessubstances.Oxidationofcoalisanexothermicreaction,iftheheatcannotbedissipated,willenablethecoalaccumulationoftemperature,inturn,acc
8、eleratetheoxidationofcoalandemitmoreofth