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ID:14177326
大小:510.11 KB
页数:7页
时间:2018-07-26
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1、Mechanicalperformanceofadouble-facereinforcedretainingwallinanareadisturbedbyminingAbstract:Theapplicationofadouble-facereinforcedretainingwallduringroadconstructioncanreduceengineeringcosts,speedroadpavingandhaveagoodinfluenceonenvironment.AnABAQUSnumerical
2、modelofadouble-facereinforcedretainingwallwasbuilt.Theinfluenceofsurfacesubsidenceinducedbyminingwasconsidered.Aphysicalmodeltestwasalsoperformedinthelaboratoryonareinforcedretainingwall.Theinfluence'ofsubsidenceinducedbyminingwasobserved.Thenumericalresults
3、matchmeasurementsinthelaboratoryverywell.Theverticalpressureonthebaseoftheretainingwall,thehorizontaldisplacementofthewallandthehorizontalsoilpressureactingonthewallwereanalyzed.Thedifferentialsettlementofthereinforcedbeltandaxialforcesinthewallwerealsostudi
4、ed.Keywords:double-facereinforcedretainingwall;undergroundmining;finiteelementmethod;physicalmodeltest1IntroductionTheroadsurfaceaboveaminingareawillsubsideduetotheworkunderground.Directlybackfillingsoilbeforeslopingwasadoptedtoreducetheinfluenceofminingonsu
5、rfaceroads.Thismethodusuallywasteslandandisnotreasonableeconomically.Adoublefacedreinforcedretainingwalldoesnotneedconventionalslopingandthereforesavesland.Withmining,theroadcanbeelevatedusingadouble-facedreinforcedretainingwall[11.Manyscholarshavecarried
6、outpreliminarystudiesondouble-sidedreinforcedretainingwallst2~8].Leistudiedadouble-sidedreinforcedretainingwallinaroadprojectbyusingacentrifugalmodeltest[9!.Displacementsinahighdouble-sidedretainingwall,theinfluenceofdifferentshapesoftheretainingwallondispl
7、acementsandthehorizontalearthpressuresactingontheretainingwallwerestudied.Zhuetal.studieddisplacementsonthesurfaceoftheretainingwall,horizontalpressuresactingontheretainingwallandthetensileforcesinthereinforcingsteelusingtestmodels[10lTheretainingwalltheyst
8、udiedmettheconditionB>Q.6H{BisthedistancebetweenthetwowallsandHistheheightofretainingwall).Nostudyhasbeencarriedoutforadouble-facedretainingwallundertheinfluenceofundergroundmining.Thefollowing
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