Numericalsimulationofcoalseamjointsandstiffnesseffectsoncoalbumps,姜耀东,赵毅鑫,Thenumericalapproachtotranslatorycoalbumpsanalysisisusedtoexaminetheeffectsofjointandcoalseamstiffnessontheoutburstvelocity,deformationmagnitudeoftheope