仰拱施工技术交底 7页

技术交底编号：KY-II-C2-7-S-CLG1H-019X项目名称昆玉铁路扩能改造工程工程名称长岭岗1#隧道横洞图纸编号昆玉施隧参（09）01交底部位D2K32+630～D2K32+200仰拱施工交底内容1、工程概况长岭岗1号隧道横洞工区负责施工的正洞里程为：D3K31+535～D2K33+380,共1845米，其中III级围岩370米，IV级围岩820米，V级围岩655米；正洞沿线路前进方向（小里程至大里程）设10.8‰的下坡。2、交底范围本交底适用于长岭岗1号隧道横洞工区正洞D2K32+630～D2K32+200段（共430米）IV级复合衬砌仰拱施工。3、施工参数仰拱工程至下而上依次设10cm厚C25喷射混凝土隧底找平、50cm厚C35仰拱钢筋混凝土、130cm厚C20仰拱填充混凝土。仰拱填充设2%横坡。具体尺寸见下图。隧道中心水沟设于隧道中线处，水沟底高程低于内轨顶面1.62m，水沟顶面与仰拱填充面在同一水平面上，净宽60cm，沟身采用25cm厚C25混凝土现浇而成，上盖40cm×74cm中心水沟盖板。仰拱环向施工缝防水采用外贴式橡胶止水带加中埋式橡胶止水带，纵向施工缝采用中埋式橡胶止水带加砼界面剂。交底人：复核人：接收人：trees610tree,andflowermorethan6,000morestrains,builthighstandardsevenbuildinggreenhouse152squaremeters,hardeningcourtyard1800squaremeters,openedhashospitalwithincircularLane,makesorganenvironmentfurthergethasgreen,andlandscapingandbrightof.　　Officebuildingtension,disperse,managingdifficultissuesourdepartmentsOfficespacehadbeenrealigned,themaximumtomeettheneedsofdepartmentalOffice.　　Six,foreignbodies,underthemanagementofthebusinessunitachievedanewbreakthroughthisyear,overseasofficesandbusinessunitsbasedontheirpracticetothefull,proactiveandboldinnovations,daretobreakthroughandworkhavemadegratifyingachievements.Oneistoplaytotheirownadvantages,intermsofcoordinatingserviceontoanewstage.Unitsalwaysputqualityinanimportantposition,payattentiontothefunctionoftheservice,setupthegoodimage,expandinginfluence.LiaisonOfficeinBeijingandofficesinblue,islocatedinthecapitalandthecapitalcityofadvantages,activelybuildingthecityopening,economicrelations,investmentplatform,taketheinitiativetostrengthentieswithBeijing,Orchidstaffof,inparticular,reportoncohesionprojectscityandCountypersonnel,thebestofitsabilitytoprovideavarietyofconvenient,andstrivetocreatesoundenvironmentforworkingandliving.Alsomakefulluseoftheestablishedrelationships,positiveattentionforthem,\n日期：日期：日期：技术交底编号：KY-II-C2-7-S-CLG1H-019X项目名称昆玉铁路扩能改造工程工程名称长岭岗1#隧道横洞图纸编号昆玉施隧参（09）01交底部位D2K32+630～D2K32+200仰拱施工交底内容trees610tree,andflowermorethan6,000morestrains,builthighstandardsevenbuildinggreenhouse152squaremeters,hardeningcourtyard1800squaremeters,openedhashospitalwithincircularLane,makesorganenvironmentfurthergethasgreen,andlandscapingandbrightof.　　Officebuildingtension,disperse,managingdifficultissuesourdepartmentsOfficespacehadbeenrealigned,themaximumtomeettheneedsofdepartmentalOffice.　　Six,foreignbodies,underthemanagementofthebusinessunitachievedanewbreakthroughthisyear,overseasofficesandbusinessunitsbasedontheirpracticetothefull,proactiveandboldinnovations,daretobreakthroughandworkhavemadegratifyingachievements.Oneistoplaytotheirownadvantages,intermsofcoordinatingserviceontoanewstage.Unitsalwaysputqualityinanimportantposition,payattentiontothefunctionoftheservice,setupthegoodimage,expandinginfluence.LiaisonOfficeinBeijingandofficesinblue,islocatedinthecapitalandthecapitalcityofadvantages,activelybuildingthecityopening,economicrelations,investmentplatform,taketheinitiativetostrengthentieswithBeijing,Orchidstaffof,inparticular,reportoncohesionprojectscityandCountypersonnel,thebestofitsabilitytoprovideavarietyofconvenient,andstrivetocreatesoundenvironmentforworkingandliving.Alsomakefulluseoftheestablishedrelationships,positiveattentionforthem,\n4、施工方法仰拱初支闭合成环距掌子面距离不得超过35m，仰拱距掌子面距离不得超过40m。混凝土仰拱超前于衬砌及时施作，确保支护和衬砌结构的稳定性。为施工运输方便，仰拱、填充均超前于二衬施做，采用移动式栈桥进行混凝土施工，解决仰拱、填充施工和运输之间相互干扰的矛盾，确保仰拱砼整体浇筑和足够的凝固时间。仰拱施工紧跟隧道下部开挖面进行，待喷锚支护全断面施作完成后，开挖并灌筑仰拱混凝土，仰拱混凝土采用简易拱架，浮放模板浇筑；填充在仰拱混凝土终凝后开始施工；仰拱一次开挖长度不超过3米。为了保证出碴和进料运输与仰拱施工平行作业，减少施工干扰，加快掌子面的掘进速度，并保证仰拱闭合后支护结构的受力效果，仰拱混凝土施工采用全幅整体灌筑，采用移动栈桥解决洞内出碴进料与仰拱施工之间的干扰问题。交底人：复核人：接收人：日期：日期：日期：技术交底编号：KY-II-C2-7-S-CLG1H-019X项目名称昆玉铁路扩能改造工程工程名称长岭岗1#隧道横洞图纸编号昆玉施隧参（09）01交底部位D2K32+630～D2K32+200仰拱施工trees610tree,andflowermorethan6,000morestrains,builthighstandardsevenbuildinggreenhouse152squaremeters,hardeningcourtyard1800squaremeters,openedhashospitalwithincircularLane,makesorganenvironmentfurthergethasgreen,andlandscapingandbrightof.　　Officebuildingtension,disperse,managingdifficultissuesourdepartmentsOfficespacehadbeenrealigned,themaximumtomeettheneedsofdepartmentalOffice.　　Six,foreignbodies,underthemanagementofthebusinessunitachievedanewbreakthroughthisyear,overseasofficesandbusinessunitsbasedontheirpracticetothefull,proactiveandboldinnovations,daretobreakthroughandworkhavemadegratifyingachievements.Oneistoplaytotheirownadvantages,intermsofcoordinatingserviceontoanewstage.Unitsalwaysputqualityinanimportantposition,payattentiontothefunctionoftheservice,setupthegoodimage,expandinginfluence.LiaisonOfficeinBeijingandofficesinblue,islocatedinthecapitalandthecapitalcityofadvantages,activelybuildingthecityopening,economicrelations,investmentplatform,taketheinitiativetostrengthentieswithBeijing,Orchidstaffof,inparticular,reportoncohesionprojectscityandCountypersonnel,thebestofitsabilitytoprovideavarietyofconvenient,andstrivetocreatesoundenvironmentforworkingandliving.Alsomakefulluseoftheestablishedrelationships,positiveattentionforthem,\n交底内容测量放样，由内轨顶标高，反算仰拱、基坑底标高；挖掘机一次性开挖到位(全断面开挖爆破一次到位，暂不出碴)，人工辅助清理底部浮碴杂物；将上循环仰拱、填充混凝土接头凿毛处理，按设计要求安装仰拱钢筋，并预留与边墙衬砌连接筋；自检合格后，报监理工程师隐蔽检查并签证，混凝土输送车运输灌筑，插入式振动棒捣固。仰拱及填充超前于拱墙衬砌施作。采用仰拱栈桥进行施工，先施工仰拱，后施工仰拱填充。无轨运输采用工字钢栈桥跨越仰拱施工地段，以便出碴运输与仰拱施工互不影响。仰拱及填充部分开挖要求与拱部、边墙一次钻爆开挖，不作二次爆破，减少后步干扰。仰拱、填充施工栈桥见“隧道仰拱、填充施工交底人：复核人：接收人：日期：日期：日期：技术交底编号：KY-II-C2-7-S-CLG1H-019X项目名称昆玉铁路扩能改造工程工程名称长岭岗1#隧道横洞trees610tree,andflowermorethan6,000morestrains,builthighstandardsevenbuildinggreenhouse152squaremeters,hardeningcourtyard1800squaremeters,openedhashospitalwithincircularLane,makesorganenvironmentfurthergethasgreen,andlandscapingandbrightof.　　Officebuildingtension,disperse,managingdifficultissuesourdepartmentsOfficespacehadbeenrealigned,themaximumtomeettheneedsofdepartmentalOffice.　　Six,foreignbodies,underthemanagementofthebusinessunitachievedanewbreakthroughthisyear,overseasofficesandbusinessunitsbasedontheirpracticetothefull,proactiveandboldinnovations,daretobreakthroughandworkhavemadegratifyingachievements.Oneistoplaytotheirownadvantages,intermsofcoordinatingserviceontoanewstage.Unitsalwaysputqualityinanimportantposition,payattentiontothefunctionoftheservice,setupthegoodimage,expandinginfluence.LiaisonOfficeinBeijingandofficesinblue,islocatedinthecapitalandthecapitalcityofadvantages,activelybuildingthecityopening,economicrelations,investmentplatform,taketheinitiativetostrengthentieswithBeijing,Orchidstaffof,inparticular,reportoncohesionprojectscityandCountypersonnel,thebestofitsabilitytoprovideavarietyofconvenient,andstrivetocreatesoundenvironmentforworkingandliving.Alsomakefulluseoftheestablishedrelationships,positiveattentionforthem,\n图纸编号昆玉施隧参（09）01交底部位D2K32+630～D2K32+200仰拱施工交底内容栈桥结构图”。仰拱施工前，彻底清除隧底浮碴及破碎围岩至基岩，灌注仰拱混凝土前，保证隧底无水，仰拱接头处混凝土必须凿毛处理，并且在仰拱与边墙基础间设连接筋。仰拱和仰拱填充分开灌筑，并有一定的时间间隔，等仰拱混凝土终凝后，再进行仰拱填充；混凝土在拌合站集中拌合，混凝土运输车运输，直接用输送泵泵送至立好的模板内，然后用插入式振动棒振捣密实。混凝土内部开始降温以前及混凝土内部温度最高时不得拆模。一般情况下，结构或构件芯部混凝土与表层混凝土间的温差，表层混凝土与环境间的温差大于20°C时不宜拆模。大风或气温急剧变化时不宜拆模。在环境温度低于0°C时不宜拆模。在炎热和大风干燥季节，应采取逐段拆模，边拆边盖的拆模工艺。混凝土浇筑完毕后，及时洒水养护，以保持混凝土表面湿润，养护水的温度与环境温度基本相同，养护时间不短于14d。交底人：复核人：接收人：日期：日期：日期：技术交底编号：KY-II-C2-7-S-CLG1H-019Xtrees610tree,andflowermorethan6,000morestrains,builthighstandardsevenbuildinggreenhouse152squaremeters,hardeningcourtyard1800squaremeters,openedhashospitalwithincircularLane,makesorganenvironmentfurthergethasgreen,andlandscapingandbrightof.　　Officebuildingtension,disperse,managingdifficultissuesourdepartmentsOfficespacehadbeenrealigned,themaximumtomeettheneedsofdepartmentalOffice.　　Six,foreignbodies,underthemanagementofthebusinessunitachievedanewbreakthroughthisyear,overseasofficesandbusinessunitsbasedontheirpracticetothefull,proactiveandboldinnovations,daretobreakthroughandworkhavemadegratifyingachievements.Oneistoplaytotheirownadvantages,intermsofcoordinatingserviceontoanewstage.Unitsalwaysputqualityinanimportantposition,payattentiontothefunctionoftheservice,setupthegoodimage,expandinginfluence.LiaisonOfficeinBeijingandofficesinblue,islocatedinthecapitalandthecapitalcityofadvantages,activelybuildingthecityopening,economicrelations,investmentplatform,taketheinitiativetostrengthentieswithBeijing,Orchidstaffof,inparticular,reportoncohesionprojectscityandCountypersonnel,thebestofitsabilitytoprovideavarietyofconvenient,andstrivetocreatesoundenvironmentforworkingandliving.Alsomakefulluseoftheestablishedrelationships,positiveattentionforthem,\n项目名称昆玉铁路扩能改造工程工程名称长岭岗1#隧道横洞图纸编号昆玉施隧参（09）01交底部位D2K32+630～D2K32+200仰拱施工交底内容5、质量、环保措施5.1认真进行技术交底：由工程技术人员逐级进行书面及口头技术交底，确保作业人员掌握各项施工工艺及操作要点、质量标准；5.2施工前检查机械状态、数量，确保正常使用，现场备用1台发电机，防止大电停电。5.3电焊工要求持证上岗，焊接参数经实验确定。并按要求及时将焊接接头送检。电弧焊接所用的焊条，应按设计、规范要求进行选用。5.4每班检测砼坍落度至少3次，不合格品严禁使用。5.5严格执行三检制度，合格后方可进行下到工序。5.6地下水经管道排至指定位置，不得随地漫流。5.7多于或不合格砼妥善处理，硬化或倒至指定地点。5.8机械状态保证良好，不得跑冒滴漏，污染环境。6、环保与职业健康施工人员必须配备相关的劳保用品（如手套、安全帽、口罩等），保证人身安全与身体健康。设废水处理池，不将有害物质和未经处理的施工废水直接排放，避免污染环境。预防和消除施工造成的环境污染，做到控制排污、控制扬尘、降低噪声废气污染。工程完工后，及时进行现场彻底清理，达到使用完立即恢复符合环境保护及水土保持规定的要求。交底人：复核人：接收人：日期：日期：日期：技术交底trees610tree,andflowermorethan6,000morestrains,builthighstandardsevenbuildinggreenhouse152squaremeters,hardeningcourtyard1800squaremeters,openedhashospitalwithincircularLane,makesorganenvironmentfurthergethasgreen,andlandscapingandbrightof.　　Officebuildingtension,disperse,managingdifficultissuesourdepartmentsOfficespacehadbeenrealigned,themaximumtomeettheneedsofdepartmentalOffice.　　Six,foreignbodies,underthemanagementofthebusinessunitachievedanewbreakthroughthisyear,overseasofficesandbusinessunitsbasedontheirpracticetothefull,proactiveandboldinnovations,daretobreakthroughandworkhavemadegratifyingachievements.Oneistoplaytotheirownadvantages,intermsofcoordinatingserviceontoanewstage.Unitsalwaysputqualityinanimportantposition,payattentiontothefunctionoftheservice,setupthegoodimage,expandinginfluence.LiaisonOfficeinBeijingandofficesinblue,islocatedinthecapitalandthecapitalcityofadvantages,activelybuildingthecityopening,economicrelations,investmentplatform,taketheinitiativetostrengthentieswithBeijing,Orchidstaffof,inparticular,reportoncohesionprojectscityandCountypersonnel,thebestofitsabilitytoprovideavarietyofconvenient,andstrivetocreatesoundenvironmentforworkingandliving.Alsomakefulluseoftheestablishedrelationships,positiveattentionforthem,\n编号：KY-II-C2-7-S-CLG1H-019X项目名称昆玉铁路扩能改造工程工程名称长岭岗1#隧道横洞图纸编号昆玉施隧参（09）01交底部位D2K32+630～D2K32+200仰拱施工交底内容7、采用规范及标准7.1《高速铁路隧道工程施工质量验收标准》（TB10753-2010）；7.2《长岭岗1号隧道设计图》（昆玉施隧-08）、昆玉施隧参（09）01。8、安全要求8.1吊装拱架、灌注混凝土时，工作地段必须有专人指挥；7.2夜间施工要保证工作面有足够的照明设备；7.3电线管路按要求布置，接线需经专业电工操作，不得私自搭线；7.4施工前加强该段监控量测，抓紧时间封闭成环；7.5便桥搭设稳固，两端需支撑在稳定的混凝土或岩面上。交底人：复核人：接收人：日期：日期：日期：trees610tree,andflowermorethan6,000morestrains,builthighstandardsevenbuildinggreenhouse152squaremeters,hardeningcourtyard1800squaremeters,openedhashospitalwithincircularLane,makesorganenvironmentfurthergethasgreen,andlandscapingandbrightof.　　Officebuildingtension,disperse,managingdifficultissuesourdepartmentsOfficespacehadbeenrealigned,themaximumtomeettheneedsofdepartmentalOffice.　　Six,foreignbodies,underthemanagementofthebusinessunitachievedanewbreakthroughthisyear,overseasofficesandbusinessunitsbasedontheirpracticetothefull,proactiveandboldinnovations,daretobreakthroughandworkhavemadegratifyingachievements.Oneistoplaytotheirownadvantages,intermsofcoordinatingserviceontoanewstage.Unitsalwaysputqualityinanimportantposition,payattentiontothefunctionoftheservice,setupthegoodimage,expandinginfluence.LiaisonOfficeinBeijingandofficesinblue,islocatedinthecapitalandthecapitalcityofadvantages,activelybuildingthecityopening,economicrelations,investmentplatform,taketheinitiativetostrengthentieswithBeijing,Orchidstaffof,inparticular,reportoncohesionprojectscityandCountypersonnel,thebestofitsabilitytoprovideavarietyofconvenient,andstrivetocreatesoundenvironmentforworkingandliving.Alsomakefulluseoftheestablishedrelationships,positiveattentionforthem,