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ID:12702630
大小:516.45 KB
页数:13页
时间:2018-07-18
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1、Mechanicalperformanceofadouble-facereinforcedretainingwallinanareadisturbedbyminingAbstract:Theapplicationofadouble-facereinforcedretainingwallduringroadconstructioncanreduceengineeringcosts,speedroadpavingandhaveagoodinfluenceonenvironment.AnABAQUSnumericalmodelofadouble-facereinf
2、orcedretainingwallwasbuilt.Theinfluenceofsurfacesubsidenceinducedbyminingwasconsidered.Aphysicalmodeltestwasalsoperformedinthelaboratoryonareinforcedretainingwall.Theinfluence'ofsubsidenceinducedbyminingwasobserved.Thenumericalresultsmatchmeasurementsinthelaboratoryverywell.Thevert
3、icalpressureonthebaseoftheretainingwall,thehorizontaldisplacementofthewallandthehorizontalsoilpressureactingonthewallwereanalyzed.Thedifferentialsettlementofthereinforcedbeltandaxialforcesinthewallwerealsostudied.Keywords:double-facereinforcedretainingwall;undergroundmining;finitee
4、lementmethod;physicalmodeltest1IntroductionTheroadsurfaceaboveaminingareawillsubsideduetotheworkunderground.Directlybackfillingsoilbeforeslopingwasadoptedtoreducetheinfluenceofminingonsurfaceroads.Thismethodusuallywasteslandandisnotreasonableeconomically.Adoublefacedreinforcedreta
5、iningwalldoesnotneedconventionalslopingandthereforesavesland.Withmining,theroadcanbeelevatedusingadouble-facedreinforcedretainingwall[11.Manyscholarshavecarriedoutpreliminarystudiesondouble-sidedreinforcedretainingwallst2~8].Leistudiedadouble-sidedreinforcedretainingwallinaroadpr
6、ojectbyusingacentrifugalmodeltest[9!.Displacementsinahighdouble-sidedretainingwall,theinfluenceofdifferentshapesoftheretainingwallondisplacementsandthehorizontalearthpressuresactingontheretainingwallwerestudied.Zhuetal.studieddisplacementsonthesurfaceoftheretainingwall,horizontal
7、pressuresactingontheretainingwallandthetensileforcesinthereinforcingsteelusingtestmodels[10lTheretainingwalltheystudiedmettheconditionB>Q.6H{BisthedistancebetweenthetwowallsandHistheheightofretainingwall).Nostudyhasbeencarriedoutforadouble-facedretainingwallundertheinfluenceofunde
8、rgroundmining.Thefollowing
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