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1、英文原文NumericalSimulationofCoalFloorFaultActivationInfluencedbyMiningWANGLian-guo,MIAOXie-xingSchoolofSciences,ChinaUniversityofMining&Technology,Xuzhou,Jiangsu221008,ChinaAbstract:BymeansofthenumericalsimulationsoftwareANSYS,theactivationregularityofcoalfloorfaul
2、tscausedbyminingissimulated.Theresultsindicatethatthevariationinhorizontal,verticalandshearstresses,aswellasthehorizontalandverticaldisplacementsintheupperandthelowerfaultblocksattheworkfacearealmostidentical.Influencedbyminingofthefloorrock,therearestressreleas
3、ingandstressrisingareasattheupperpartandatthefootwallofthefault.Thedistributionofstressisinfluencedbythefaultsothatthestressisolinesarestaggeredbythefaultfaceandthestressisfocusedontherockseamaroundthetwoendsofthefault.Buttheinfluenceinfaultactivationontheuppero
4、rthelowerfaultblocksoftheworkfaceismarkedlydifferent.Whentheworkfaceisonthefootwallofthefault,thereisahorizontaltensionstressareaontheupperpartofthefault;whentheworkfaceisontheupperpartofthefault,ithasahorizontalcompressivestressareaonthelowerfaultblock.Whenthew
5、orkfaceisatthelowerfaultblock,themaximumverticaldisplacementis5timeslargerthenwhentheworkfaceisontheupperfaultblock,whichgreatlyincreasesthechanceofafatalinrushofwaterfromthecoalfloor.Keywords:mining;faultactivation;simulation1IntroductionInthispaperweattempttoa
6、ppraisetheactivationregularityanddeformationofcoalfloorfaultscausedbymining.Damagemechanismsofrockaroundcoalfloorfaultsaredescribedfromdifferentaspectsandindifferentcontexts[1–10].Descriptionscan,tosomeextent,intensifyourunderstandingofcoalfloorfaultactivationca
7、usedbymining.However,lookingattheeffectoftheseviews,amechanicalanalysiscannotachievethepurposeofpicturesandclarity.Foramoreprofoundunderstandingoftheregularityoffaultactivationcausedbyminingattheworkface,weusecomputerstomakenumericalsimulationsandobtainaseriesof
8、valuableconclusions.2NumericalCalculationofModelFormationConsideringthedifferentfaultactivationsinfluencedbytheworkfaceontheupperandlowerfaultblocks,webuildtwocalcula