巷道圍巖力學參數(shù)估計及其穩(wěn)定性評價.pdf

1、西安科技大學碩士學位論文巷道圍巖力學參數(shù)估計及其穩(wěn)定性評價姓名：王蓬申請學位級別：碩士專業(yè)：建筑與土木工程指導教師：谷拴成@Subject:MechanicalParametersEstimationofRockMassEvaluationofSurroundingRockMassStabilityofRoadwayEngineeringField:ArchitectureCivilEngineeringName:WangPeng(Si

2、gnature)Instruct:GuShuancheng(Signature)ABSTRACTOccurrencestatussoonofthestructuralsurfaceincludedintherockmassesinparticularthemechanicalpropertiesplaysadecisiveimpactontherockshapes.Becauseoftheexistenceofthestructural

3、surfaceit’sunreasonabletorecognizethesurroundingrockmassesashomogeneousisotropicintactrockwhilemakingassessmentofrockmassstability.Theaffectionofstructuralsurfaceontherockmassstrengthshouldbeconsideredthestrengthoffractu

4、redrockmassshouldalsobestudiedindepth.Withtherapiddevelopmentofcomputertechnologynumericalsimulationhasbecomeapowerfultooltosolvegeologicalminingproblemsithasanadvantagethatotherresearchmethodscannotmatchwhileconductinge

5、valuationoffracturedsurroundingrockmassstability.ThesitegeologicalhydrogeologicalconditionsofHongliulinCoalMinewasinvestigatedfirstlystructuralfeaturesofsurroundingrockmassofroadwaywassummaried.Thenthephysicalacteristics

6、ofsurroundingrockmassofroadwaywasstudiedthevaluemethodofmechanicalparametersofjointedrockmasswasgiven.Thephysicalparametersofsurroundingrockmassofroadwayin25201wkingplacewasestimatedusingHoekBrownempiricalstrengthcriteri

7、on.Basedonthisthestabilityoffracturedsurroundingrockmassofroadwayin25201wkingplacewasanalizedbefceaftersupptingusinglargediscreteelementsoftwareUDECthesimulationresultsweremadeasystemanalysistheconclusionswereasfollow:Af

8、tertheroadwaywasexcavatedbefethesupptingwasdonethedisplacementofsurroundingrockismainlyoccurredintheroofofroadwayfverticaldirectionverticaldirectionofsurroundingrockatthetopoftheroadwayoccurreddisplacementdefmationthenth