预览加载中，请您耐心等待几秒...

刨煤机煤岩刨削破碎数值模拟研究.docx

预览
1/2
2/2

在线预览结束，喜欢就下载吧，查找使用更方便

下载提示 文本预览

如果您无法下载资料，请参考说明：

1、部分资料下载需要金币，请确保您的账户上有足够的金币

2、已购买过的文档，再次下载不重复扣费

3、资料包下载后请先用软件解压，在使用对应软件打开

刨煤机煤岩刨削破碎数值模拟研究 Title:NumericalSimulationStudyonCoalSeamCuttingandCrushingValuesofCoalShearers Abstract: Coalshearerisanessentialminingequipmentwidelyusedinundergroundcoalminesforcuttingandcollectingcoal.Understandingthecuttingandcrushingbehaviorsofcoalsheareroncoalseamsiscrucialforimprovingminingefficiencyandcoalrecovery.Inthisstudy,wepresentanumericalsimulationapproachtoinvestigatethecoalseamcuttingandcrushingvaluesofcoalshearers.Thesimulationresultsprovidevaluableinsightsintothemechanismsunderlyingcoalsheareroperationandcanbeusedtooptimizecuttingparametersandminingprocesses. 1.Introduction Coalshearersplayavitalroleinundergroundcoalminingoperationsbymechanicallyextractingcoalfromcoalseams.Thecuttingandcrushingvaluesofcoalshearerdirectlyaffectthecoalrecoveryrateandthequalityoftheextractedcoal.Thus,understandingthecuttingandcrushingbehaviorsofcoalshearersisessentialforefficientandsafecoalmining.Thispaperaimstoexplorethecoalseamcuttingandcrushingvaluesofcoalshearersusingnumericalsimulation. 2.Methodology 2.1MathematicalModel Amathematicalmodelisdevelopedtosimulatethecuttingandcrushingprocessesofcoalshearers.Themodelconsidersvariousparameters,includingcoalstrength,cuttergeometry,cuttingspeed,andcuttingdepth.Bysolvingthegoverningequations,themodelcanpredictthecuttingforcesandcrushingvaluesduringcoalsheareroperation. 2.2NumericalSimulation Thenumericalsimulationiscarriedoutusingfiniteelementanalysissoftware.Thecoalseamismodeledasanelastic-plasticmaterialwithspecificpropertiesobtainedfromlaboratorytests.Thecutterheadissimulatedasarigidbodywithspecifiedgeometryandmotion.Thesimulationaccountsfortheinteractionbetweenthecutterandcoalseam,consideringfactorssuchascontactpressureandfriction. 3.ResultsandDiscussion Thesimulationresultsprovidedetailedinsightsintothecoalseamcuttingandcrushingvaluesofcoalshearers.Variousparameters,suchascuttingspeed,cuttingdepth,andcoalstrength,aresystematicallyinvestigatedtounderstandtheireffectsonthecuttingandcrushingbehaviors.Thesimulationcanpr