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1、Absrtact:Withthelarge-scaledevelopmentofrailwayconstructioninChina,therailwayhasenteredthestageofhighspeed,whichputsforwardhigherrequirementsforthedesignandconstructionqualityofrailwaysubgrade.Subgradedrainageisanimportantpartofsubgradedesign,anditisanimportantfactoraffectingsafetyands
2、tabilityofrailwaysubgrade.Inordertoensurethesafetyandstabilityoftherailwaysubgradeandensurethenormaloperationoftherailwaypassengerandfreighttrain,让isnecessarytoguidethesurfacewaterandgroundwaterintheroadbedrangebydesigningscientificandreasonabledrainagemeasures.Thispaperfirstoutlinesth
3、edesignprinciplesofrailwaysubgradedrainage,andthendiscussesindetailthesetting,constructionandqualitycontrolmethodsofrailwaysubgradedrainagefacilities,inordertoprovidereasonablereferenceforthedesignandconstructionofrailwaysubgrade.Keywords:railway;subgradedrainage;Designandconstruction1
4、DesignprinciplesofrailwaysubgradedrainageThemainpurposeoftherailwaySubgradedrainageistodredgethesurfacewaterandgroundwaterintheworkingareaoftheroadbedintime,sothatthewatercontentofsubgradebodyandbasesoilisreducedtotheallowablescopeoftheproject,thusensuringthestrengthandstabilityofsubgr
5、adeisnotaffected.Itmainlyincludestwoaspects,drainageengineeringofsubgradesurfaceofsurfacewaterandpartitionofundergrounddrainageofsubgradetodredgeundergroundwater.Thedesignprincipleofrailwaysubgradedrainage:subgradeDrainagedesignshouldadapttolocalconditions,economicandpractical,makefull
6、useofsitetopography,topographyandhydrogeologicalconditions,combinedwithirrigationanddrainagesystemandsoilandwaterconservationproject,comprehensiveoverallplanninganddesign,reasonablelayout,andshouldbewithbridge,tunnel,stationandotherdrainagefacilities,Inordertosmooththeflowofchannels,to
7、avoidtheirown,contradictory,mutualdisconnectionoftheundesirablephenomenon.ThecurrentrailwayconstructionlandspiritofHverycherish,thebasicstatepolicyofrationaluseoflandandprotectionofarablelandshouldbepaidattentiontotoprotecttheecologicalenvironment,avoidcausingsoilerosionofthenearbyhi
