焦坪礦區(qū)瓦斯賦存特征與抽放方法研究.pdf

1、西安科技大學碩士學位論文焦坪礦區(qū)瓦斯賦存特征與抽放方法研究姓名：王坤申請學位級別：碩士專業(yè)：地質工程指導教師：陳練武20090517Subject：StudyonOccnrrenceCharacteristicsofGasandDrainageMethodinJiaopingMiningAreaSpecialty：GeologicalEngineeringName：WangKunSupervisor：ChenLianwu(Signatu

2、re)(Signature)ABSTRACTJiaopingminingareaisarareminingregionofChinainwhichcoal，oilandgasassociateThelargeamountofgasfromcoalbedandlayerbecomesthemainfactorthataffectsminesafetyBystudyingcoalgas’Sformation，storageandemissi

3、oncharacteristicsanddiscussingthevolumeforecastofgasflowvolumeitisoneofthemainmethodstopreventgasaccidentsThroughcollectioncoalsamplesofJiaopingminingarea’stwomainproductionminetobeonproximateanalysis，coalandrockcomposit

4、ionanalysis，coalbasedsurfacecharacteristicsanalysis(SEManalysis)，poresdistributionandporevolumescharacteristicsanalysis(porosityanalysis，mercurypenetrationexperiment，liquidnitrogenadsorptionexperiment)，adsorptionanddesor

5、ptioncharacteristicsanalysis(isothermaladsorptionanddesorptionexperiment)andmassofexperimentaldataWasanalyzed，organizedandmathematicalfitted，theanalysisshowsthatChenjiashan48coal’Sliquidnitrogenadsorptioncapacityandmercu

6、rypenetrationsaturationdegreearelargerthanXiashijie4％oalOn4％oaloftwomines，theporeshapeshowasparallelplatecreviceandopenformAndtheporethroatofChenjiashan4#coalshowaSbottleneckTheopennessonChenjiashan礦coal’SporeiSbettertha

7、nXiashijie4％oalBasedoncoalbasedsurfacecharacteristicsandthediscrepancyofenergydistribution，weselectWeibullfunction，whichinfluencebydesorptiondiscrepancyonsorbentsurface，todescribedesorptionCombinedtheisothermaladsorption

8、experimentsofLangmuirfunctionmodelwithexperimentaldatadesorptionWeibullfunction，itshowsthatadsorptionheatofChenjiashan4#coalislessthanXiashijie4#coalanddesorptionofChenjiashan4#coaliSeasierthanXiashijie4#coalAfterevaluat