管廊深基坑不同降水工况对周边环境影响分析

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中图分类号：TU473 文献标志码：A 文章编号：1005-8249（2025）02-0074-06

DOI：10.19860/j.cnki.issn1005-8249.2025.02.013

Abstract：To investigate the impactof deep foundation pits forpipegaleriesonthe surrounding environment，basedonthe Midas GTS NX finite element program，combined with a comprehensive pipegalery foundation pitengineering example，the numerical modelundertheconditionofstepprecipitation excavationandoe-timeprecipitation excavationis established，and theinfluenceoffoundation pitprecipitationexcavationonthe surroundingenvironmentunderdiferentworkingconditionsis studied，thesewerage field，thesurfacesetlementaroundthefoundation pitandthedeformationof theexisting subwaytuel areanalyzed.Theresultsshowthatcomparedtoone-timewaterapplication，theinfiltrationrateofsoilexhibitsasignificant decreasingtrendunder stepwisewaterapplication；Thegroundsetlement around theapproximatedistribution is"spoon"， setlementvaluesconformtotherequirementsofthedeformation；Neartheexistingsubwaytunel excavationsidetophorizontal displacementandverticalsetlementdeformation，overallisgreaterthanthehorizontaldisplacementandverticalsetemnt; Undertheconditionof step-by-step precipitation，the impactoffoundation pit precipitation excavationonthesurrounding environment issmalerthan thatofone-time precipitation.itisrecommended tochoosestep-by-stepprecipitation when conducting foundation pit precipitation excavation，so as to reduce the impact on the surrounding environment.

Key words：foundationpit precipitation；precipitationconditions；seepage field；peripheralsetlement；deformationof subway tunnels

0 引言

城市地下综合管廊工程是指将各类管线分类存放管理，以减少管线的破坏，减少路面的开挖次数，达到经济环保目的的基础设施。（剩余5563字）