某重载铁路路基沉降病害分布特征及治理对策

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中图分类号：U216.41 文献标志码：A 文章编号：2095-2945（2025）28-0135-05

Abstract：AfectedbyheavyrainfallintheShanshanareainlateSeptember2O21，alargenumberofsubgradediseases occurredonaheavy-haulrailwayThemaintypesaresixcategories：landslide，slopecollapse，subgradesetlement，tunel entranceandexitslopediseases，bridgeconeslopecolapseanddrainagesystemdamage.Statisticalanalysisshowsthatsubgrade settlement diseases account for about 23% ，and most occur in five different geological sections：high fill sections，bridge and culverts transition sections，excavation sections，semi-filled and half-dug sections，and stations.About 47% of settlement points ocurinthe transitionsectionofbridgesandculverts，whichisthesectionwith the mostsetlement diseases.About 33.4% of thesetlementpointsocuredinsem-filedsemiexcavatedandhighilledsectios，whichisthesectionwherestleet diseasesoccurmore.Subgradesinkswerefoundinallthreeexcavationsections，whicharetherotcauseofsugradeselement. Duetothelarge watercatchmentarea，poordrainage，andthestationbeingbuiltinthefillngarea，subgradeselementdiseases occurredinnarlyhalfofthestationarea.Basedonthefactthattheskylightpointtimeonthisheavy-haulrailwayisshorter than4hours，itisproposed touse oblique hole radial grouting to control setlement，anditissuccessful.

Keywords：heavy-haulrailway；subgradesetlement；radiationgrouting；diseasedistributioncharacteristics;control countermeasures

既有铁路运营过程中，安全、平顺、稳定及高效的行车状态是安全运营的基本要求1。（剩余4828字）