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1、Absrtact:Withthelarge-scaledevelopmentofrailwayconstructioninChina,therailwayhasenteredthestageofhighspeed,whichputsforwardhigherrequirementsforthedesignandconstructionqualityofrailwaysubgrade.Subgradedrainageisanimportantpartofsubgradedesign,anditisanimportantfactoraffect
2、ingsafetyandstabilityofrailwaysubgrade.Inordertoensurethesafetyandstabilityoftherailwaysubgradeandensurethenormaloperationoftherailwaypassengerandfreighttrain,itisnecessarytoguidethesurfacewaterandgroundwaterintheroadbedrangebydesigningscientificandreasonabledrainagemeasur
3、es.Thispaperfirstoutlinesthedesignprinciplesofrailwaysubgradedrainage,andthendiscussesindetailthesetting,constructionandqualitycontrolmethodsofrailwaysubgradedrainagefacilities,inordertoprovidereasonablereferenceforthedesignandconstructionofrailwaysubgrade.Keywords:railway
4、;subgradedrainage;Designandconstruction1DesignprinciplesofrailwaysubgradedrainageThemainpurposeoftherailwaySubgradedrainageistodredgethesurfacewaterandgroundwaterintheworkingareaoftheroadbedintime,sothatthewatercontentofsubgradebodyandbasesoilisreducedtotheallowablescopeof
5、theproject,thusensuringthestrengthandstabilityofsubgradeisnotaffected.Itmainlyincludestwoaspects,drainageengineeringofsubgradesurfaceofsurfacewaterandpartitionofundergrounddrainageofsubgradetodredgeundergroundwater.Thedesignprincipleofrailwaysubgradedrainage:subgradeDraina
6、gedesignshouldadapttolocalconditions,economicandpractical,makefulluseofsitetopography,topographyandhydrogeologicalconditions,combinedwithirrigationanddrainagesystemandsoilandwaterconservationproject,comprehensiveoverallplanninganddesign,reasonablelayout,andshouldbewithbrid
7、ge,tunnel,stationandotherdrainagefacilities,Inordertosmooththeflowofchannels,toavoidtheirown,contradictory,mutualdisconnectionoftheundesirablephenomenon.Thecurrentrailwayconstructionlandspiritof"verycherish,thebasicstatepolicyofrationaluseoflandandprotectionofarablelandsho
8、uldbepaidattentiontotoprotecttheecologicalenvironment,avoidcausingsoilerosionofthenearbyh
