管廊深基坑不同降水工況對周邊環(huán)境影響分析

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中圖分類號：TU473 文獻標志碼：A 文章編號：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

城市地下綜合管廊工程是指將各類管線分類存放管理，以減少管線的破壞，減少路面的開挖次數(shù)，達到經(jīng)濟環(huán)保目的的基礎(chǔ)設(shè)施。（剩余5563字）