突出煤层下分层放顶煤开采研究与应用.docx

突出煤层下分层放顶煤开采研究与应用
Title:TheStudyandApplicationofSublevelCavingMiningwithEmphasizedTopCoalExtractioninCoalSeam
Introduction:
Coalisanessentialenergyresourceworldwide,anditsextractiontechniqueshaveadvancedsignificantlyovertimetomeettheincreasingglobalenergydemand.Sublevelcavingminingwithemphasizedtopcoalextractionisaninnovativeminingmethodthathasgainedattentioninrecentyears.Thispaperaimstoexploretheresearchandapplicationofthistechniqueinundergroundcoalmining.
1.BackgroundofSublevelCavingMining:
1.1DefinitionandPrinciple:
Sublevelcavingminingisabulkundergroundminingmethodthatinvolvesthepartialextractionofcoalseamsinhorizontalslicesusinggravityfororefragmentationandcaving.Thetopcoalextractiontechniqueaimstoenhancesafetyandeconomicbenefitsbyefficientlyextractingthetopcoallayer.
1.2AdvantagesandChallenges:
Sublevelcavingminingoffersseveraladvantages,includinghighproductivity,lowoperationcosts,andlowenvironmentalimpact.However,italsopresentschallengessuchasgroundmovementcontrol,gasmanagement,andequipmentreliabilityduetothecavingprocess.
2.ResearchonSublevelCavingMiningwithEmphasizedTopCoalExtraction:
2.1GeotechnicalAssessment:
Acomprehensivegeotechnicalassessmentiscrucialtoanalyzethestabilityoftheoverlyingstrata,includingthehangingwallandgoafformationduringsublevelcaving.Theassessmentincludesrockmassclassification,beddingplaneanalysis,andmechanicalpropertiestesting.
2.2CavingSubsidenceControl:
Cavingsubsidencecontroltechniques,suchasgrouting,backfilling,andmininglayoutoptimization,arestudiedtominimizethesurfacesubsidenceandprotectsurfaceinfrastructure.
2.3TopCoalExtractionMethods:
Variousmethodsareexploredtoenhancetherecoveryoftopcoalduringsublevelcaving.Theseincludehydraulicfracturing,blastingtechniques,andmechanicalequipmentforefficienttopcoalextraction.
3.ApplicationsofSublevelCavingMiningwithEmphasizedTopCoalExtraction:
3.1CaseStudies:
Casestudiesfromactualminingoperationsaroundtheworldarepresentedtodemonstratethesuccessfulapplicationofsublevelcavingminingwithemphasize