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厚煤层留小煤柱托顶煤沿空掘巷支护技术
厚煤层留小煤柱托顶煤沿空掘巷支护技术
Abstract:
WiththeincreasinglylargerproportionofthickcoalseamsinChina'scoalminingindustry,miningmethodsandsupporttechnologiesforthickcoalseamshavebecomearesearchhotspotinrecentyears.Oneoftheeffectivemethodsistoleavesmallcoalpillarsandsupportthecoalalongthespacewhileminingcoalseams.Inthispaper,thetechnologyofsupportingcoalalongthespaceandleavingsmallcoalpillarsinthickcoalseamsissummarizedandanalyzed,andtheadvantagesanddisadvantagesofthismethodareintroducedindetail.
Introduction:
Inrecentyears,China'scoalminingindustryhasbeenexpandingtheproportionofthickcoalseams,andminingmethodsandsupporttechnologiesforthickcoalseamshavebecomeanimportantresearchdirection.Thetraditionalmethodoffullyexploitingandsupportingcoalseamshasbeenunabletomeettherequirementsofminingthickcoalseams.Therefore,anewminingmethodandsupporttechnologyforthickcoalseamsmustbedeveloped.Thetechnologyofsupportingcoalalongthespaceandleavingsmallcoalpillarsinthickcoalseamshasbeenwidelyusedinrecentyears,whichcaneffectivelysolvetheproblemofinstabilityanddeformationcausedbylargeminingpressureinthickcoalseams.
1.OverviewoftheSupportingTechnologyforCoalSeamsalongtheSpaceandLeavingSmallCoalPillars
Thesupporttechnologyforcoalseamsalongthespaceandleavingsmallcoalpillarsreferstothetechnologyofminingcoalseamsinmultiplelayersalongthethicknessdirection,supportingthecoalalongthespacethroughtheupperandlowergoafsandleavingsmallcoalpillarstoeffectivelycontrolthedeformation,largeminingpressure,androofinstabilityofcoalseams.
2.AdvantagesofSupportingCoalalongtheSpaceandLeavingSmallCoalPillars
(1)Itcaneffectivelyreducetheminingpressureofthickcoalseams,avoidthelargedeformationandinstabilityofcoalseamscausedbythefullexploitationofcoalseams,andimprovethestabilityandsafetyofcoalmines.
(2)Itcaneffectivelyreducethewasteofcoalresources,improvetherateofrecoveryofcoalresources,andreducetheminingcost.
(3)Itcaneffectivelyreducethedamagetothesurfaceandundergroundenvironmentcausedbycoalmining,reducethewaste