新型锚固加强植被系统加固南宁膨胀岩的试验分析-experimental analysis of new anchoring and vegetation strengthening expansive rocks in nanning, security reinforcement.docx

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2018-06-03 发布于上海
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新型锚固加强植被系统加固南宁膨胀岩的试验分析-experimental analysis of new anchoring and vegetation strengthening expansive rocks in nanning, security reinforcement.docx

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新型锚固加强植被系统加固南宁膨胀岩的试验分析-experimental analysis of new anchoring and vegetation strengthening expansive rocks in nanning, security reinforcement

分布不均匀，局部产生较大的裂隙，最大裂隙为8mm，说明HPTRM可以限制膨胀岩裂隙的开展。(3)采用数值模拟方法反演HPTRM受到的膨胀力作用，得到HPTRM作用下实际膨胀力分布和锚杆受力情况。关键字：新型锚固加强植被系统膨胀岩高性能植被保护毯微变形膨胀力THETESTOFNEWANCHOREDREINFORCEDSYSTEMSTRENGTHENINGNANNINGSWELLINGROCKABSTRACTNewanchoredreinforcedsystemisanewkindofflexibleprotectionsystem,whichcombinedhighperformanceturfreinforcementmats（HPTRM）withpercussiondrivenearthanchor，hasbeenappliedintheshallowslopestabilityintheUnitedStates.TheapplicationofARVSinprotectionofswellingrockslopeisnewresearchdirection.Inthepaper，thereinforcementeffectofswellingrockwithHPTRMisstudiedbylaboratorytests，modeltestsandnumericalsimulation.Inthispaper,theresearchcontentincluded:ThemechanismofswellingrockconstrainedbyHPTRMisstudied.SinceHPTRMallowsacertainamountofexpansiondeformationofswellingrock,theexpansionforceisnotthesamewithdifferentdeformation.Inordertostudythedistributionofexpansiveforce,Theexponentialrelationshipbetweensmalldeformationexpensiveforceanddeformationrateisobtainedbyexpansiveforcetest.Theexperimentaldeviceisdesignedandproduced.TheswellingrockreinforcementmodeltestwhichcombinedofHPTRMandboltiscarriedoutbythedesigndevice.Thetestresultsshowthat:theremoldedswellingsoilexpansiveforceanddeformationisincreasingwiththeincreaseofwatercontent.ThemeasuringpointaveragedisplacementofswellingrockboundbyHPTRMtestmodelis7.7mmandthemeasuringpointaveragedisplacementofbareswellingrockmodelis10.2mm,whichillustratesthatexpansivesoildeformationcouldberestrictedbyHPTRM.Underthesameloadingconditions,theultimateloadofswellingrockboundbyHPTRMmodelis123kg,theultimateloadofbareswellingrockmodelis98kg,whichindicatestheexpansionforcesufferedbyHPTRMistransmittedtothebolt.Thecontrastofthedevelopmentoffractureafter30daysbetweentheswellingrockboundbyHPTRMmodelandthebareswellingrockmodelshowsthat:HPTRMcouldrestrictthedevelopmentofrockfractures.ThefissuresoftheswellingrockboundbyHPTRMmodelareevenlydistributedandthemaximumfissureisonly2mm;thefissuresofbareswellingrockmodelareunevenandthemaximumfissureis8mm.TheforceactingonHPT