建筑技术ArchitectureTechnology第54卷第4期2023年2月Vol.54No.4Feb.2023·469·地铁矿山法多道步序施工引起的沉降控制陈金刚,王伟华,郭强,槐文宝,刘静仪(北京住总集团有限责任公司,100101,北京)摘要:以北京地铁7号线东延工程黑庄户站~万盛南街西口站区间(矿山段)为工程背景,针对通马路范围受正线及后续近距离三个迂回通道先后施工引起沉降叠加影响问题,为确保各施工步序及叠加影响最终不超标,先通过数值分析根据施工步序对沉降控制指标分解、分阶段控制,现场采取针对性技术及管理措施对阶段沉降指标进行控制,最终确定矿山区间内三个迂回风道先后施工顺序及穿越通马路沉降控制措施。关键词:地铁矿山法;多道施工步序;数值分析;沉降指标分解;施工控制中图分类号:TU941文献标志码:B文章编号:1000-4726(2023)04-0469-05THEcoNTroloFsETTlEMENTcAusEDByMulTiplEcoNsTrucTioNsTEpsiNTHEMETroMiNiNGMETHoDCHEnJin-gang,WAnGWei-hua,GUOQiang,HUAIWen-bao,LIUJing-yi(BeijingUni-ConstructionGroupCo.,Ltd.,100101,Beijing,China)Abstract:AimingattheproblemofsuperimposedsettlementcausedbythesuccessiveconstructionofthemainlineandthethreesubsequentdetoursincloseproximitytotheTongmaRoadareawithHeizhuanghuStation~WanshengxiStationinterval(Minesection)ofBeijingSubwayLine7EastExtensionProjectastheengineeringbackground.Inordertoensurethatthemultipleconstructionstepsandthesuperimposedimpactdonotexceedthestandard,thesettlementcontrolindexisfirstdecomposedandcontrolledinstagesbynumericalanalysisaccordingtotheconstructionsteps,andthesitetakestargetedtechnicalandmanagementmeasurestocontrolthesettlementindexinstages,andfinallydeterminesthesequenceofconstructionofthethreedetourductsinthemineareaandthesettlementcontrolmeasuresacrosstheTongmaRoad.Keywords:metrominingmethod;multipleconstructionsteps;numericalanalysis;settlementindicatorbreakdown;constructioncontrols城市地下空间的开发和利用已成为城市发展的趋势和主流方向,新建地铁线路多次下穿既有道路或地上建构筑物的工程不断出现。隧道开挖施工扰动上方土层,当变形达到一定程度时将造成道路沉降或坍塌,造成人员及经济损失,产生恶劣的社会影响。前者做了大量关于隧道施工对穿越既有道路或地上建构筑物影响方面...