Distribution of lateral floor abutment pressure in a stope.pdfVIP

MiningScienceandTechnology(China)21(2011)217-221 __ _ ￡Q 强 呔 t _ l 0_ _|lll · · 誊篁 _ _ 一 萋 萋孽 _ — _ ÷ _ 搭霉 l¨_¨0—foI，r【 加 e必 w 宣，s8y，er．口肌，，o 姆，m口幻 誊 _ lll ■ Distributionoflateralfloorabutmentpressureinastope ZhangHualei，WangLianguo．SunJian StateKeyLaboratoryo}Geomechanics疆DeepUndergroundEngineering,ChinaUniversityofMining8Technology,Xuzhou221008,China A R T IC L E IN F O A B S T R A C T Articlehistory： Inordertostudythedistribution oflateralfloorabutmentpressureataworkingface，wefirstused Received12August2010 elasticitytheorytoestablishadistributionmodeloflateralfloorabutmentpressureandthenanalysedits Receivedinrevisedform dis仃ibution．Second．weestablishedathree—dimensionaInumericalsimulationmodeloftheHaiziCoal 14September2010 MineNo．86miningareabyusingFLAC (丌ASCAConsultingGroup)software．Weinvestigatedthe Accepted21October2010 distributionoflateralfloorabutmentpressureofastope．whichindicatedthatthepositionofabutment pressurepeakvariesatdifferentfloordepths．W ethendeterminedtherationalreinofrcementrangeOf Keywords： afloorroadw~I basedontheconclusionreachedearlier．Finally,weusedourconclusionsinsuppo~of 12,teralfloor theNo．86 mining areacrossing—roadway．The supported crossing—roadway remained stablewhen Abutmentpressure