富水砂层中泥水平衡顶管施工技术简析.pdfVIP

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富水砂层中泥水平衡顶管施工技术简析

张孔志，殷贺

（中交一航局第五工程有限公司，河北秦皇岛066000）

摘要：泥水平衡顶管在富水砂层施工，受到砂层和地下水的影响，容易出现地面沉陷、顶管偏位、顶管无法顶进等问题。文

章以深圳茅洲河干支管网及互联互通工程顶管施工为例，对富水砂层泥水平衡顶管施工中沉井下沉、顶管进出洞、顶管顶进

等关键工序进行分析、总结，针对性提出顶管施工控制措施，形成沉井止水、顶管进出洞止水、顶管线型控制、顶管顶进减

阻、地面变形控制等关键技术成果，为今后类似工程提供借鉴。

关键词：顶管施工；注浆减阻；富水砂层；止水

中图分类号：TU74文献标识码：A文章编号：2097-3519（2024）S1-0109-05

DOI:10.16403/j.cnki.ggjs2024S125

Discussiononthetechniquesofmud-waterbalancedpipejackinginwater-rich

sandlayer

ZhangKongzhi,YinHe

(NO.5EngineeringCo.,Ltd.ofCCCCFirstHarborEngineeringCo.,Ltd.,

QinhuangdaoHebei066000,China)

Abstract:Theperformeceofmud-waterbalancedpipejackinginwater-richsandlayerisaffectedbysandlayer

andgroundwater,whichispronetosurfacesubsidence,pipejackingdeflectionandpipejackingfailure.Taking

thepipejackingconstructionofShenzhenMaozhouRivermainbranchpipenetworkandinterconnectionproject

asanexample,thispaperanalyzesandsummarizesthekeyprocessessuchascaissonsinking,pipejackinginand

outofthehole,pipejackinginandoutofthemudwaterbalancepipejackinginthewater-richsandlayer,and

proposesthecontrolmeasuresforpipejackingoperayion.Thekeytechnicalachievementsofcaissonwater

sealing,pipejackinginandoutoftheholewatersealing,pipejackinginlinecontrol,pipejackingindrag

reduction,grounddeformationcontrol,etc.,theushavingprovidedreferenceforsimilarworksinthefuture.

Keywords:Pipejackingoperatin;Groutingtoreducedrag;Wat