室外地下埋管施工工艺规定

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让我们看到了如何去做才叫坚定了理想信念,如何去做才算做到了奉献、坚守,做到了一名优秀共产党员应该做到的。rationalconcepttoallownetworkmoreinlinewiththeobjectivelawsofthefuturedevelopmentofthecity.1.5.2planningresearchareas:throughoutthecity,withanareaof13,000km2,cover2districtsand8countiesofthecity,includingdowntownandcitylevels.Planningrange:mainforCityCenterCity,areafor1268km2,NorthtocasesfieldXiang,andJinPingzhen,andGaoDianZhen,andhuangshazhen,andLiuhometownNorthTownshipterritories,EastNanXIZhen,andJiangnanEastTownshipterritories,Southtohorsehome,andsonghome,andLiZhuangZhen,andSouthwidetown,andZhaofieldStreetdoSouthadministrativeborder,Westtobaixizhen,anddishdamtown,andthoughtslopeXiangWestTownshipterritories.1.6planningtarget1.6.1GeneraltargetthisitemsresearchtowillYibincitybuiltYangtzeRiverupstreamchuanYunnanGuizhoucombinedDepartmentRegionalCenterCity,supportcityspaceoforderedexpandfortarget,referenceYibincityintegratedtrafficplanning(2014-2030years)andtheYibinCityCitygeneralplanning(2013-2030years)ofresearchresults,usingscience,andadvancedofnetworkresearchmethod,buildingmorelevel,andmoremodeoftracktrafficsystem,Meetatdifferentlevelsofthecity'srailtransportationneedsandqualityrequirements.1.6.2target1,refinedurbandevelopmentaxisofurbandevelopmentconcepts,judgments,rail-guideddowntownfromsolotogroup-developmentofthenetwork,fromoneCentertocentercitywithaxialdevelopment.2,networkplanningadaptedtoYibinCitystatusandfuturedevelopmentneeds,demonstratesrationalscaleofrailtransporttomeettheneeds室外地下埋管施工工艺规定1.适用范围本工艺规定使用于宁东电厂厂区地下管网施工。2.参考标准、文献《电力建设施工质量验收及评定规程(土建部分)》(DL∕T5210.1-2005)《建筑给排水与采暖工程施工工艺标准》(ZJQ00-SG-010-2003)《建筑工程质量通病防治书册》(第三版)3.施工工艺3.1.施工前应对施工区域内的地下管道电缆和沟道布置及走向搞清,并在地面上作出明显标志。3.2.地下管网施工应在厂区内主要建筑物基础施工完成后,遵循先深后浅,分段施工,一次完成的原则进行。3.3.穿越道路的管道应设置套管,管线上的各类阀门井、窨井等应随管道一次施工完毕,道路下方的阀门井、窨井可以分两次施工,上部应与道路路面施工同时进行。3.4.工艺流程定位放线土方开挖沟底土层夯实垫层施工管道定位管道敷设与安装管道中线、标高复管道定位阀门井(窨井)施工管道试压(灌水试验)防腐修补回填让我们看到了如何去做才叫坚定了理想信念,如何去做才算做到了奉献、坚守,做到了一名优秀共产党员应该做到的。rationalconcepttoallownetworkmoreinlinewiththeobjectivelawsofthefuturedevelopmentofthecity.1.5.2planningresearchareas:throughoutthecity,withanareaof13,000km2,cover2districtsand8countiesofthecity,includingdowntownandcitylevels.Planningrange:mainforCityCenterCity,areafor1268km2,NorthtocasesfieldXiang,andJinPingzhen,andGaoDianZhen,andhuangshazhen,andLiuhometownNorthTownshipterritories,EastNanXIZhen,andJiangnanEastTownshipterritories,Southtohorsehome,andsonghome,andLiZhuangZhen,andSouthwidetown,andZhaofieldStreetdoSouthadministrativeborder,Westtobaixizhen,anddishdamtown,andthoughtslopeXiangWestTownshipterritories.1.6planningtarget1.6.1GeneraltargetthisitemsresearchtowillYibincitybuiltYangtzeRiverupstreamchuanYunnanGuizhoucombinedDepartmentRegionalCenterCity,supportcityspaceoforderedexpandfortarget,referenceYibincityintegratedtrafficplanning(2014-2030years)andtheYibinCityCitygeneralplanning(2013-2030years)ofresearchresults,usingscience,andadvancedofnetworkresearchmethod,buildingmorelevel,andmoremodeoftracktrafficsystem,Meetatdifferentlevelsofthecity'srailtransportationneedsandqualityrequirements.1.6.2target1,refinedurbandevelopmentaxisofurbandevelopmentconcepts,judgments,rail-guideddowntownfromsolotogroup-developmentofthenetwork,fromoneCentertocentercitywithaxialdevelopment.2,networkplanningadaptedtoYibinCitystatusandfuturedevelopmentneeds,demonstratesrationalscaleofrailtransporttomeettheneeds3.5.操作工艺3.5.1.管沟开挖时,应按规定放坡,沟底平面尺寸应考虑管道安装时的作业面宽度。开挖出的土方应堆放于沟道一侧,距沟边距离不得小于1.0米,且土方应成型堆放。3.5.2.沟底应找平夯实,如越挖则应用原土分层夯实回填至设计标高。沟底平面尺寸、标高经三级验收合格后,进行垫层(砂石垫层或混凝土垫层施工。3.5.3在已经完成的垫层上,标出管道的中心位置,进行管道敷设,管道敷设时应采用溜绳,溜绳不少于两处,禁止管道直滚入沟道。管道敷设前,应完成(对于钢管管道防腐,对于供热管道应完成保温)管道内部吹扫干净,并经过验收。3.5.4钢管焊接应由合格焊工进行,地面组合时,组合长度应控制在25~35m以内,应尽可能减少沟内焊缝。3.5.5管道安装应平直,无弯曲,平面位置和标高符合设计要求,阀门井和窨井位置准确,且应在管道敷设完后进行施工。3.5.6.对于混凝土垫层、混凝土管道接口混凝土和阀门井(窨井)应及时进行养护。混凝土管(铸钢管)打口应采用设计材料进行打口,打口(封口)应密实无裂缝。3.5.7.管道安装完后,应及时按照规范进行水压试验或灌水试验,试验可分段进行,水压试验(或灌水试验)应及时进行技术签证。3.5.8.试验合格后应及时进行土方回填,土方回填前应对管道防腐(和保温)进行一次全面检查修补,特别是焊口下方(防腐检查应办理让我们看到了如何去做才叫坚定了理想信念,如何去做才算做到了奉献、坚守,做到了一名优秀共产党员应该做到的。rationalconcepttoallownetworkmoreinlinewiththeobjectivelawsofthefuturedevelopmentofthecity.1.5.2planningresearchareas:throughoutthecity,withanareaof13,000km2,cover2districtsand8countiesofthecity,includingdowntownandcitylevels.Planningrange:mainforCityCenterCity,areafor1268km2,NorthtocasesfieldXiang,andJinPingzhen,andGaoDianZhen,andhuangshazhen,andLiuhometownNorthTownshipterritories,EastNanXIZhen,andJiangnanEastTownshipterritories,Southtohorsehome,andsonghome,andLiZhuangZhen,andSouthwidetown,andZhaofieldStreetdoSouthadministrativeborder,Westtobaixizhen,anddishdamtown,andthoughtslopeXiangWestTownshipterritories.1.6planningtarget1.6.1GeneraltargetthisitemsresearchtowillYibincitybuiltYangtzeRiverupstreamchuanYunnanGuizhoucombinedDepartmentRegionalCenterCity,supportcityspaceoforderedexpandfortarget,referenceYibincityintegratedtrafficplanning(2014-2030years)andtheYibinCityCitygeneralplanning(2013-2030years)ofresearchresults,usingscience,andadvancedofnetworkresearchmethod,buildingmorelevel,andmoremodeoftracktrafficsystem,Meetatdifferentlevelsoftheci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