粉砂软土区拦挡坝基础微型钢管桩施工与滑坡泥流治理研究

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中图分类号：U416 文献标志码：A 文章编号：2095-2945（2025）31-0071-05

Abstract： On December 18， 2023，an Ms6.2 -magnitude earthquake occurred in Jishishan， Gansu Province， causing a mudflow secondarydisasterinnearbyZhongchuan Township，QinghaiProvince.Thegeologyofthisareaisdominatedbysiltandsoftsoil. Itshighwatercontent，highvoidratioandothercharacteristicsposegreatchalengestomudflowmanagementanddam construction.Traditionalfoundationtreatmentmethodsarenotefective.Thispaperaimstostudytheconstructiontechnologyof microsteelpipepilesinsiltsandandsoftsoilareasanditscontrolefectonlandslidesandmudflows，andprovidereferecefor geologicaldisasterpreventionandsimilarprojectsinthisarea.Usingmethodssuchascalculationanalysis，onsiteconstructionand processtest，thefoundationdesignandstabilitycalculationofthedamarecariedoutthroughtheanalysisofthereinforcement principleofmicrosteelpipepiles；theonsiteonstructionprocessofmicro-steelpipepilereinforcementiselaboratedindetail， andthe pileloadtestiscarriedout.Theresultsshowthatafterthemicro-steelpipepilesareformedbyusinghigh-presure circulatinggroutingtechnology，thefoundationbearingcapacityandsoilshearstrengthcanbeefectivelyimprovedAfterthe compositemicro-steelpipepilesareformed，thebearingcapacityofthesinglepileisnotlessthan140kN，which hasa treatmentefectotesurroundingsoftsoil，canavoidunevensettlementofthefoundation，andhasgoodaplicationrsultsin retainingdam foundation constructioninsilt-sandandsoft soil areas andthemanagementof landslidesand mud flow.

Keywords：siltsandsoft soil;microsteel pipepile;foundationreinforcement;retainingdam;landslide;mudflowcontrol

2023年12月18日，甘肃积石山发生 MS6.2 级地震，此次地震造成了大量的人员伤亡和财产损失。（剩余6399字）