红层泥岩及改良土填筑高速铁路路基适应性及其工程技术的分析

.650/oointheconditionofdesignandconstructiontechnologyofsubgradeforhigh—speedrailwayatpresent.Inthedesign.1‰pressionratioofred—mudstonesubgradeforhigh.speedrailway,andthetimeforsubgradesettlementtendtostablitymaybe5monthsto7months.7.pactionqualityofred—mudstonesoil.Iflesscoarse,bigdensity,smallporosity,thesoilpermeabilitywillbesmall,andtheatmosphererainCanonlyimpactlimiteddepthofsubgrade.Theexpansionrateofred.mudstonesoilissmaller,anditwilldecreaseswhentheloadincreases.Astakingsomewaterproofanddrainagemeasurestored-mudstonesubgrade,soilandrainareseparatedfromeeachother,pactedred—mudstonehasaverylimitedimpactforsubgradeinhigh—speedrailway.8.pactionquality,thefurtherbrokenofcoarseparticlescausedbyconstructionmachines,periodandotherfactors,thestandardofred.mudstoneparticlesizeinconstructionis