轨道交通深基坑减压降水精细化管控技术研究

——以上海地铁21号线某车站为例

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中图分类号：P642.26；TU46+3 文献标志码：A 文章编号：2095-1329（2025）02-0047-07

Research on refined control technology for depressurization and dewatering of deep foundation pits in rail transit： taking a station on Shanghai metro line 21 as an example

YIN Lifeng

ShanghaiChangkaiGeotechnical EngineeringCo.，Ltd.，Shanghai20oo93，China

Abstract：Againstthebackdropofrapidurbanizationandhigh-densityurbanexpansion，theconstructionenvironmentofurbanrail transitiscomplexandtedveesocialmpactsadsfetyacdentsusedbystementofsoudgoussandoadufacsdue tofoundationpitostructiarenotucomoAsooftheimpoantsksousinteostructionprocesofeefoundatipits， depresurizationandprecipitationofpressedwaterarecucial.Iispartiularlyimportant toontroltemeasoablydmiie theadverseeffectsofprecipitationonsuoundingbuildings （structures）whileensurigthesafetyofthefoundationpit.Thisarticle takesthedeepfoundationpitprojectofastationonShangaiMetroLineasanexampletoitroducetheoveralideaoffecotrol ofdeepfoundationpitdeprsurzatonanddewatering.Combingon-sitepumpgtests，umeicalsimulatincalculations，caation conditionsubdivisionoffoundationpits，nddigitaldwateingsystems，teadversefectsofdepresszationanddewateringduring excavationontheoutsideofthepitaregreatlyeducd，maintainngthesafetyofsuoundingbuildingsandprovidingrefereceand inspiration for the construction of similar projects in the future.

Key words： deep foundationpits; refinedcontrol; numericalsimulation;workingconditionsegmentation; digitaldewatering

对于富水软土地区，地铁车站基坑降水及开挖的共同作用引起的基坑及周围土体的变形规律和影响一直以来便是轨道交通建设的关键[1-2]。（剩余9897字）