沈阳水厂管道施工方案 10页

'沈阳市大伙房水库输水配套工程东部净水厂管道施工方案沈阳市大伙房水库输水配套工程东部净水厂管道施工方案编制：审核：批准：中铁一局集团有限公司沈阳市大伙房水库输水配套工程东部净水厂项目经理部2009年11月4日planning,andgovernmentfinancing,andwholevillagerelocation,andfirstbuiltHousplit"ofprinciples,insistedbigcommunityplanning,andlargedistricttransformation,breakadministrativedivisionsboundaries,optimizationtownspatialstructure,speedupnewCommunityconstruction,formednewcommunitylivebuilding,andintensivewithgroundproject,andenterprisetaxinsurancerunning,andExpandemploymentandimprovepeople"slivelihoodshedchangedeconomicchain.Thesecond,onpovertyreliefanddevelopmentworkinthisbattlethemissionobjectivesforpovertyalleviationinthefilearealreadyquiteclear,wastheprevioustwoyears(2016-2017)concentratedhard,threeyearsafter(2018-2020),consolidationandimprovement,bytheendof2017,theCounty......Apoorvillageand......Librarydistrictall"pickhat"and"five-ten",......Alltheruralpooroutofpoverty,stabilitytoachieve"twoworryaboutthree".Toaccomplishthesetasks,winthebattleforpovertyalleviation,thekeyistofindouttheway,selectingtherightbreakthrough,effectivenessinordertoworkon.(A)toaccuratelyidentifyobjectsforpovertyalleviation.XIGeneralSecretarynotedthatthecriticaltimeofpovertyliesinprecision.Howtodoaccurate?"firsttaskistodobasicworksolid.Totaldemandisdowntovillage,household,persons,County,town,andvillagebooks,card 沈阳市大伙房水库输水配套工程东部净水厂管道施工方案一、工程简介1、本工程给水管采用UPVC管；排水管采用玻璃钢管和UPVC,铸铁管；工艺管道采用钢管，加氯和投药管道采用UPVC管，重力流污水管道管径小于600mm时，采用UPVC排水管材，管径大于600mm时，采用玻璃钢夹砂管材，压力污水管道厂区阀门井后采用球墨铸铁管，排水泵后厂区阀门前采用钢管。UPVC管材、管件均需符合《埋地塑料排水管道工程技术规程（DG/TJ08-308-2002）》的有关规定。其他管道需符合《给水排水管道工程施工及验收规范（GB50268-97）》的规定。2、工程特点及要求本工程管道数量较多，金属钢管为7.9km,UPVC管为3.1km.玻璃钢管为1.2km管道交叉又多，且工艺，污水管埋深较大，最大处达5m，在施工过程中发现冲突时，遵循厂区上水管道及有压工艺管道与其它管渠交叉时，上述两种管道宜加设45°弯头以避让。厂区管道施工顺序为先下后上，避免后施工管道对已有管道基础扰动，同时应避免管道施工队建（构）筑基础扰动。但须满足大于600mm覆土深度要求。①、外防腐：埋地钢管及管件的外防腐采用环氧煤沥青防腐层特加强级，作法为“一底二布六油”，即底漆-面漆-面漆，玻璃布，面漆-面漆，玻璃布，面漆，面漆。干膜厚度大于0.6mm.地上敷设钢管及管件采用环氧树脂防腐层，作法为“一底二油”，底漆-面漆-面漆。干膜厚度大于0.2mm内防腐：钢管及钢制管件的内防腐采用环保卫生级涂料防腐，采用特加强级，两遍底漆，两遍面漆，成膜厚度应大于0.3mm.②、钢管、铸铁管以及管配件设计中无特别说明的均为10kg/cm2，钢管及配件采用Q235钢，球墨铸铁管及配件和法兰采用GB13295-2003标准。③、厂区所有处在道路上的井盖为重型，不在道路的井盖为轻型。④、管道标高设计图中除特别说明外，管线为管中心标高。⑤、管道基础均应落在稳定的地基上，不允许埋在虚土上，如遇土质较差处应采用砾石砂做加强处理，压实系数不小于0.93；管道转弯处应设置混凝土支墩，具体做法见图集03SS505。与各类构筑物连接的管道，应在构筑物充水预压稳定后方可接通。二、施工工艺流程planning,andgovernmentfinancing,andwholevillagerelocation,andfirstbuiltHousplit"ofprinciples,insistedbigcommunityplanning,andlargedistricttransformation,breakadministrativedivisionsboundaries,optimizationtownspatialstructure,speedupnewCommunityconstruction,formednewcommunitylivebuilding,andintensivewithgroundproject,andenterprisetaxinsurancerunning,andExpandemploymentandimprovepeople"slivelihoodshedchangedeconomicchain.Thesecond,onpovertyreliefanddevelopmentworkinthisbattlethemissionobjectivesforpovertyalleviationinthefilearealreadyquiteclear,wastheprevioustwoyears(2016-2017)concentratedhard,threeyearsafter(2018-2020),consolidationandimprovement,bytheendof2017,theCounty......Apoorvillageand......Librarydistrictall"pickhat"and"five-ten",......Alltheruralpooroutofpoverty,stabilitytoachieve"twoworryaboutthree".Toaccomplishthesetasks,winthebattleforpovertyalleviation,thekeyistofindouttheway,selectingtherightbreakthrough,effectivenessinordertoworkon.(A)toaccuratelyidentifyobjectsforpovertyalleviation.XIGeneralSecretarynotedthatthecriticaltimeofpovertyliesinprecision.Howtodoaccurate?"firsttaskistodobasicworksolid.Totaldemandisdowntovillage,household,persons,County,town,andvillagebooks,card 沈阳市大伙房水库输水配套工程东部净水厂管道施工方案本工程受土建进度影响，故施工顺序根据现场情况调整施工具体工艺见右图：施工准备沟槽开挖沟槽支护管道基础管道安装附属设施安装、井室砌筑水压试验基坑回填清场、下道工序水泥砂浆搅拌拆沟槽支撑管道支架制安管道清洗管道施工工艺流程图三、工程测量1、管道工程测量准备工作①、熟悉设计图纸，弄清管线布置及工艺设计和施工要求。②、熟悉现场，了解管线走向，以及管线沿途已有平面和高程控制点分布。③、根据管道平面图和已有控制点，并结合实际情形，做好施工测量数据的计算整理，并绘制施测草图。2、管道中线定位及高程控制测量①、高程根据勘察院提供水准点沿管线引测布点，并定期对其复测，保证测量的精确性。②、管道中线定位将其根据设计院的定位图用全站仪测设到地面上并用木桩标定。用白灰撒出开挖边线，工程部复核后报监理批准后方可进行下一步施工。四、具体部位施工planning,andgovernmentfinancing,andwholevillagerelocation,andfirstbuiltHousplit"ofprinciples,insistedbigcommunityplanning,andlargedistricttransformation,breakadministrativedivisionsboundaries,optimizationtownspatialstructure,speedupnewCommunityconstruction,formednewcommunitylivebuilding,andintensivewithgroundproject,andenterprisetaxinsurancerunning,andExpandemploymentandimprovepeople"slivelihoodshedchangedeconomicchain.Thesecond,onpovertyreliefanddevelopmentworkinthisbattlethemissionobjectivesforpovertyalleviationinthefilearealreadyquiteclear,wastheprevioustwoyears(2016-2017)concentratedhard,threeyearsafter(2018-2020),consolidationandimprovement,bytheendof2017,theCounty......Apoorvillageand......Librarydistrictall"pickhat"and"five-ten",......Alltheruralpooroutofpoverty,stabilitytoachieve"twoworryaboutthree".Toaccomplishthesetasks,winthebattleforpovertyalleviation,thekeyistofindouttheway,selectingtherightbreakthrough,effectivenessinordertoworkon.(A)toaccuratelyidentifyobjectsforpovertyalleviation.XIGeneralSecretarynotedthatthecriticaltimeofpovertyliesinprecision.Howtodoaccurate?"firsttaskistodobasicworksolid.Totaldemandisdowntovillage,household,persons,County,town,andvillagebooks,card 沈阳市大伙房水库输水配套工程东部净水厂管道施工方案1、沟槽开挖沟槽开挖前应要求各有关部门提供地下管线情况，并结合人工开挖勘察，确认无误后方可进行施工。当发现管线位置后应做好清晰的标志以保护好地下管线。沟槽开挖采用机械开挖、人工配合，白灰划出中心线及边线，机械开挖坑槽严格控制其中心线，防止挖偏，井室位置应采用交会法控制。开挖时应注意以下事项：①沟槽开挖前，应根据要求设置好龙门桩和龙门板，并必须经复核后方可使用，施工过程中应经常复核，发现偏差应及时纠正，放样复核的原始记录必须妥善保存，以备查考。②开挖过程中，对土质情况、地下水位等的变化应经常检查，并做好原始记录及绘出纵断面图。沟槽开挖完毕，必须经勘察、设计、监理等有关部门人员验槽合格后方可继续进行施工，如发现基底土质与设计不符时，应会同设计、建设、监理单位研究处理，并做好隐蔽工程记录。③对于邻近的地下管线和构筑物等应设置位移、沉降观测点，若发现异常情况，立即采取有效措施，并通知有关人员进行处理。④沟槽开挖施工过程中，应注意弃土的堆放位置，距沟槽边要有不小于3m的安全距离，避免因堆土不当，地面堆载过大，造成土体位移从而导致边坡坍塌等不利情况的发生。同时应在沟边预留出施工及安全通道以便施工人员和材料的进出，并保证在紧急情况下施工人员能及时疏散。为确保施工安全，施工机械设备必须停放在平稳的地方。⑤机械开挖沟槽时，为防止超挖，并准确控制槽底标高，应在基底预留15～20cm厚土层，用人工开挖。⑥施工时在沟槽边设置临时排水沟，并在沟槽外两侧筑小土堤截水，以防地表水倒灌入施工沟槽内。沟槽内两侧设排水沟和集水井，沟槽内积水用抽水机抽取，以保证基坑不被水浸泡。冬季施工时，应做好焊缝的保温工作，可用棉壳将其覆盖一圈，外围包缠彩条布。回填时，不得含有机物，冻土以及砖，石等硬块。2、沟槽开挖形式及支护①沟槽开挖深度小于3m的采用自然放坡，坡度可为1：0.53。如下图：planning,andgovernmentfinancing,andwholevillagerelocation,andfirstbuiltHousplit"ofprinciples,insistedbigcommunityplanning,andlargedistricttransformation,breakadministrativedivisionsboundaries,optimizationtownspatialstructure,speedupnewCommunityconstruction,formednewcommunitylivebuilding,andintensivewithgroundproject,andenterprisetaxinsurancerunning,andExpandemploymentandimprovepeople"slivelihoodshedchangedeconomicchain.Thesecond,onpovertyreliefanddevelopmentworkinthisbattlethemissionobjectivesforpovertyalleviationinthefilearealreadyquiteclear,wastheprevioustwoyears(2016-2017)concentratedhard,threeyearsafter(2018-2020),consolidationandimprovement,bytheendof2017,theCounty......Apoorvillageand......Librarydistrictall"pickhat"and"five-ten",......Alltheruralpooroutofpoverty,stabilitytoachieve"twoworryaboutthree".Toaccomplishthesetasks,winthebattleforpovertyalleviation,thekeyistofindouttheway,selectingtherightbreakthrough,effectivenessinordertoworkon.(A)toaccuratelyidentifyobjectsforpovertyalleviation.XIGeneralSecretarynotedthatthecriticaltimeofpovertyliesinprecision.Howtodoaccurate?"firsttaskistodobasicworksolid.Totaldemandisdowntovillage,household,persons,County,town,andvillagebooks,card 沈阳市大伙房水库输水配套工程东部净水厂管道施工方案B=D+2t+2ad=D+2t+2a+2×i×H①d—上口开挖宽度；a—工作面，根据规范，取a=300mm；t—管道壁厚；D—管道内径（公称直径）；i—放坡开挖坡度，目前取1：1，不能满足时取1：1.5；B—沟槽底宽。3、沟槽检查验收沟槽开挖完成应及时进行自检，自检合格后通知监理进场进行检查验收，验收合格后方能进入下一工序的施工。序号项目允许偏差（mm）检验频率检验方法范围点数1槽底高程0，-30两井之间3用水准仪测量2槽底中线每侧宽度不小于规定6挂中心线用尺量，每侧计3点3沟槽边坡不陡于规定6用坡度尺检验每侧3点基槽开挖允许偏差和检验方法4、管基施工①金属管道坐落在原土上，采用天然地基基础，敷设前将天然地基整平，避免扰动原土。如有地基扰动或局部回填土，地基必须夯实，密实度大于95%，然后铺150-200mm砂垫层，如遇地基较差或岩石地区采用砂基础。planning,andgovernmentfinancing,andwholevillagerelocation,andfirstbuiltHousplit"ofprinciples,insistedbigcommunityplanning,andlargedistricttransformation,breakadministrativedivisionsboundaries,optimizationtownspatialstructure,speedupnewCommunityconstruction,formednewcommunitylivebuilding,andintensivewithgroundproject,andenterprisetaxinsurancerunning,andExpandemploymentandimprovepeople"slivelihoodshedchangedeconomicchain.Thesecond,onpovertyreliefanddevelopmentworkinthisbattlethemissionobjectivesforpovertyalleviationinthefilearealreadyquiteclear,wastheprevioustwoyears(2016-2017)concentratedhard,threeyearsafter(2018-2020),consolidationandimprovement,bytheendof2017,theCounty......Apoorvillageand......Librarydistrictall"pickhat"and"five-ten",......Alltheruralpooroutofpoverty,stabilitytoachieve"twoworryaboutthree".Toaccomplishthesetasks,winthebattleforpovertyalleviation,thekeyistofindouttheway,selectingtherightbreakthrough,effectivenessinordertoworkon.(A)toaccuratelyidentifyobjectsforpovertyalleviation.XIGeneralSecretarynotedthatthecriticaltimeofpovertyliesinprecision.Howtodoaccurate?"firsttaskistodobasicworksolid.Totaldemandisdowntovillage,household,persons,County,town,andvillagebooks,card 沈阳市大伙房水库输水配套工程东部净水厂管道施工方案玻璃钢及硬聚氯乙烯管道：管道基础必须采用砂砾垫层基础。对一般的土质地段，基底可铺一层厚度为0.1m的粗砂基础，对软土地基，且槽底处在地下水位以下时，宜铺垫层厚度不小于0.2m的沙砾垫层②给水管及回用水管基础采用砾石砂基础，具体做法参见《埋地塑料排水管道工程技术规程（DG/TJ08-308-2002）》中6.3的有关要求及形式。③工艺管道根据现场实际土质情况，无法满足稳定要求时，均可采用砾石砂及块石加强处理。以上基础材料数量均进行现场签证。5、管道安装①、管道安装施工流程沟槽及管材检查下管稳管管道接口连接管道检测②钢管焊接连接安装前，应仔细检查安装位置、角度、标高，以避免错位返工。管道焊接前的检查:管道内的泥、油渍清理干净，管口边缘和焊口两侧10～15mm范围内的表面除锈、露出金属光泽；钢管的表面无裂缝、锈蚀、起皮和压延等不良现象。管道焊接采用双面焊接。钢管切割选用气割，纵向焊缝放在管道中心线上半圆的45度左右。纵向焊缝错开，其间距不小于100mm。对口时检查内壁是否平整，其错口的允许偏差不大于2mm，不允许在对口间隙帮条夹焊或用加热法去缩小间隙及强力接焊。环向焊缝距支架净距不小于100mm，直管管段两相临环向焊缝的间距不小于200mm，不在管道任何位置焊有十字焊缝。对施焊后的钢管进行检查，焊接检查的内容有外观、宽度、表面余高、咬边、错台、未焊满等项。对不符和要求的焊缝必须重新焊接。③钢管、铸铁管的法兰连接钢制管道在焊接法兰过程中，要求法兰面与钢管的中心线垂直，并选用密封面好、螺栓连接同轴的法兰进行施焊，选用同型号的连接螺栓，安装方向一致，紧固螺栓时对称进行，均匀施力拧紧。④球墨铸铁管施工下管采用16t轮胎式吊车,吊车沿沟槽planning,andgovernmentfinancing,andwholevillagerelocation,andfirstbuiltHousplit"ofprinciples,insistedbigcommunityplanning,andlargedistricttransformation,breakadministrativedivisionsboundaries,optimizationtownspatialstructure,speedupnewCommunityconstruction,formednewcommunitylivebuilding,andintensivewithgroundproject,andenterprisetaxinsurancerunning,andExpandemploymentandimprovepeople"slivelihoodshedchangedeconomicchain.Thesecond,onpovertyreliefanddevelopmentworkinthisbattlethemissionobjectivesforpovertyalleviationinthefilearealreadyquiteclear,wastheprevioustwoyears(2016-2017)concentratedhard,threeyearsafter(2018-2020),consolidationandimprovement,bytheendof2017,theCounty......Apoorvillageand......Librarydistrictall"pickhat"and"five-ten",......Alltheruralpooroutofpoverty,stabilitytoachieve"twoworryaboutthree".Toaccomplishthesetasks,winthebattleforpovertyalleviation,thekeyistofindouttheway,selectingtherightbreakthrough,effectivenessinordertoworkon.(A)toaccuratelyidentifyobjectsforpovertyalleviation.XIGeneralSecretarynotedthatthecriticaltimeofpovertyliesinprecision.Howtodoaccurate?"firsttaskistodobasicworksolid.Totaldemandisdowntovillage,household,persons,County,town,andvillagebooks,card 沈阳市大伙房水库输水配套工程东部净水厂管道施工方案开行至距沟边缘1米，以避免沟壁坍塌，影响沟槽边坡的稳定。下管时用专用吊勾或柔性吊索，严禁用钢丝绳穿入管内起吊。同时有专人指挥，绑（套）管子应找好重心，平吊轻放，避免扰动基底管道相互碰撞。在施工现场狭窄不便机械下管的地段，采用人工压绳下管。管道安装时确保管道纵断面高程及平面位置准确，安装允许偏差符合规范要求。对砂砾石基础的管基，注意承插口工作坑处及基底至胸腔三角部位基础的施工，采取有效措施减少安管过程中对基础的扰动。清理管道承口、插口工作面。承口内上好胶圈然后均匀涂抹润滑剂。清理橡胶圈，把胶圈弯成心形或花形装入承口槽内，并用手沿整个胶圈按压一遍，确保胶圈各个部分不翘不扭，均匀一致地卡在槽内。采用2-3t手拉葫芦拉动，使橡胶密封圈正确就位，平顺、不扭曲、不脱落，然后检查插口推入承口的位置是否符合要求，用探尺伸入承插口间隙检查胶圈位置是否正确，每节接口检查合格后方能进行下节安装。UPVC、钢筋混凝土承插管连接方法与铸铁管相同。⑤井室施工雨、污水检查井、隔油池、雨水口采用砖砌结构，阀井、压力井等采用钢筋混凝土结构。砌筑各种井前必须将基础面先洗涮干净，并定出中心点，划上砌筑位置及标出砌筑高度，便于操作人员掌握。砌筑圆形阀门井、雨、污水井时，挂线校核井内径及圆度。砌筑井用M7.5水泥砂浆砌MU10号砖，排水检查井内外壁采用1:2的防水水泥砂浆抹面至井顶部。井底、井面的标高要准确，井身尺寸要符合设计要求。道路上长方形井井壁必须互相垂直，井形方正，并且井身的长轴线应与侧平石平行；如是圆井，应挂中心线校核井内径及圆度，砖砌井壁必须灰缝饱满、平整，抹灰应平顺密实，不得有空鼓、裂缝等现象。砌砖砂浆强度应满足设计要求。位于道路上的检查井，其井顶标高应与所处地面相平，位于绿化带的检查井，其井顶标高应高出绿化带0.3m。阀井、压力井等混凝土结构按照设计及有关规范施工。planning,andgovernmentfinancing,andwholevillagerelocation,andfirstbuiltHousplit"ofprinciples,insistedbigcommunityplanning,andlargedistricttransformation,breakadministrativedivisionsboundaries,optimizationtownspatialstructure,speedupnewCommunityconstruction,formednewcommunitylivebuilding,andintensivewithgroundproject,andenterprisetaxinsurancerunning,andExpandemploymentandimprovepeople"slivelihoodshedchangedeconomicchain.Thesecond,onpovertyreliefanddevelopmentworkinthisbattlethemissionobjectivesforpovertyalleviationinthefilearealreadyquiteclear,wastheprevioustwoyears(2016-2017)concentratedhard,threeyearsafter(2018-2020),consolidationandimprovement,bytheendof2017,theCounty......Apoorvillageand......Librarydistrictall"pickhat"and"five-ten",......Alltheruralpooroutofpoverty,stabilitytoachieve"twoworryaboutthree".Toaccomplishthesetasks,winthebattleforpovertyalleviation,thekeyistofindouttheway,selectingtherightbreakthrough,effectivenessinordertoworkon.(A)toaccuratelyidentifyobjectsforpovertyalleviation.XIGeneralSecretarynotedthatthecriticaltimeofpovertyliesinprecision.Howtodoaccurate?"firsttaskistodobasicworksolid.Totaldemandisdowntovillage,household,persons,County,town,andvillagebooks,card 沈阳市大伙房水库输水配套工程东部净水厂管道施工方案施工中应注意的质量问题:井面、井底高程误差超标，测量监控工作不严格；排水井、进水井砌筑尺寸误差超标，砖层不符、进水口与路面高程不匹配，未严格按标准图集的要求施工；井环开裂，井盖安装不平稳，车辆通车时跳动；砂浆强度不足，未严格按配比调配砂浆。检查井允许偏差及检验方法序号项目允许偏差(mm)检验频率检验方法范围点数1井身尺寸长、宽±20每座2用尺量，长、宽各计一点直径±20每座2用尺量2井盖高种非路面±20每座1用水准仪测量路面每座1用水准仪测量3井底高程D≤1000mm±10每座1用水准仪测量注：表中D为管径⑥严密性试验管道敷设完成后，及时进行闭水试验及管道水压力试验，具体内容见《满(闭)水试验及水压试验作业指导书》。满足要求后进入下一工序施工。⑦管道回填回填时必须将槽底杂物（草皮、模板及支撑设备等）清理干净，回填时沟槽内部不得有积水，严禁带水作业，回填材料必须符合设计和有关规范的要求。经监理工程师隐蔽验收合格后，应及时进行回填，以免晾槽过久造成塌方，挤坏管道，雨季易产生泡槽、漂管或造成回填作业困难。回填尽可能与沟槽开挖施工形成流水作业。为了保证回填土的质量，通过试验确定含水量的控制范围和压实制度，包括每层铺土厚度、压实遍数和检测方法等。回填土的含水量必须符合要求，土方开挖的产生的淤泥、有机土等予以外运，而粉质粘土，因含水量大不宜直接用于回填，与监理和设计部门现场确定采取掺拌石灰粉改善含水量或换填砂砾石等其他材料的措施。回填土中不得有碎砖、石块及有机物等。为了避免井室周围下沉的质量通病，在路面中的井室井口周围为防止回填不密实而产生沉降采取的加固措施应按设计要求处理。分段回填时，相邻段的接茬应呈阶梯状，且不得漏夯。基槽回填时应按基底排水方向由高至低分层进行，且管腔两侧同时回填。管道两侧和管顶以上50cm范围内原土人工回填夯实，采用薄铺轻夯夯实，管道两侧夯实的高度不应超过30cm。管顶50cm以上回填时，每20cmplanning,andgovernmentfinancing,andwholevillagerelocation,andfirstbuiltHousplit"ofprinciples,insistedbigcommunityplanning,andlargedistricttransformation,breakadministrativedivisionsboundaries,optimizationtownspatialstructure,speedupnewCommunityconstruction,formednewcommunitylivebuilding,andintensivewithgroundproject,andenterprisetaxinsurancerunning,andExpandemploymentandimprovepeople"slivelihoodshedchangedeconomicchain.Thesecond,onpovertyreliefanddevelopmentworkinthisbattlethemissionobjectivesforpovertyalleviationinthefilearealreadyquiteclear,wastheprevioustwoyears(2016-2017)concentratedhard,threeyearsafter(2018-2020),consolidationandimprovement,bytheendof2017,theCounty......Apoorvillageand......Librarydistrictall"pickhat"and"five-ten",......Alltheruralpooroutofpoverty,stabilitytoachieve"twoworryaboutthree".Toaccomplishthesetasks,winthebattleforpovertyalleviation,thekeyistofindouttheway,selectingtherightbreakthrough,effectivenessinordertoworkon.(A)toaccuratelyidentifyobjectsforpovertyalleviation.XIGeneralSecretarynotedthatthecriticaltimeofpovertyliesinprecision.Howtodoaccurate?"firsttaskistodobasicworksolid.Totaldemandisdowntovillage,household,persons,County,town,andvillagebooks,card 沈阳市大伙房水库输水配套工程东部净水厂管道施工方案一层对称进行，可采用自行式振动碾压工具夯实。管道与基础之间的三角区应填实。夯实时，管道两侧应对称进行，且不得使管道位移和损伤。回填质量控制现场采用环刀取样，对回填土的密实度进行检测。管道回填压实度按照设计及标准图集要求，道路范围内回填压实度还应满足道路密实度95%以上的要求。六、安全保证体系安全保证措施1、挖土方时注意事项①确保挖机作业时其处于稳定坡体上②确保挖机下方或旋转范围内没有作业人员③对于稳定的坡体及时处理，或夯实或采取支护措施，鉴于污水管道开挖深度较深，剔除边坡的孤石。采取钢管栏杆围护，挂上安全网。2、施工用电安全措施①电工作业人员必须持上岗证，严禁无证操作；电工作业必须按规定使用劳动保护用品及绝缘工具，并定期检验。②凡超过国家标准规定安全电压的各种手持电动工具额定电流小于60A，人体可能偶遇而触及的用电设备，必须安装漏电保护器，每班作业前必须检验一次；手持照明灯必须使用安全电压。③现场移动式电气设备必须使用橡胶皮绝缘电缆，横过通道必须穿管埋地敷设。④配电箱及开关箱必须防雨、设门并配锁，进、出线口必须设在箱体地面，严禁设在箱体的上顶面、侧面、后面或箱体门处，箱内严禁存放杂物，每月检查维修一次；熔丝的容量必须按用电负荷量装设，严禁用其他金属代替。⑤严禁将电线拴在铁扒钉、钢筋或其它导电金属物上，电线必须绝缘子固定，配电导线必须保证与邻近线路或设施的安全间距；架空线路或邻近线路或设施的间距离应符合规定。3、机电设备使用安全保证措施①电气设备必须绝缘良好，电线；‘不得与金属物绑在一起；各种电动机具必须按规定接零接地，并设置单一开关；遇有临时停电或停工休息时，必须拉闸加锁。’②planning,andgovernmentfinancing,andwholevillagerelocation,andfirstbuiltHousplit"ofprinciples,insistedbigcommunityplanning,andlargedistricttransformation,breakadministrativedivisionsboundaries,optimizationtownspatialstructure,speedupnewCommunityconstruction,formednewcommunitylivebuilding,andintensivewithgroundproject,andenterprisetaxinsurancerunning,andExpandemploymentandimprovepeople"slivelihoodshedchangedeconomicchain.Thesecond,onpovertyreliefanddevelopmentworkinthisbattlethemissionobjectivesforpovertyalleviationinthefilearealreadyquiteclear,wastheprevioustwoyears(2016-2017)concentratedhard,threeyearsafter(2018-2020),consolidationandimprovement,bytheendof2017,theCounty......Apoorvillageand......Librarydistrictall"pickhat"and"five-ten",......Alltheruralpooroutofpoverty,stabilitytoachieve"twoworryaboutthree".Toaccomplishthesetasks,winthebattleforpovertyalleviation,thekeyistofindouttheway,selectingtherightbreakthrough,effectivenessinordertoworkon.(A)toaccuratelyidentifyobjectsforpovertyalleviation.XIGeneralSecretarynotedthatthecriticaltimeofpovertyliesinprecision.Howtodoaccurate?"firsttaskistodobasicworksolid.Totaldemandisdowntovillage,household,persons,County,town,andvillagebooks,card 沈阳市大伙房水库输水配套工程东部净水厂管道施工方案施工机械和电气设备不得带病运转和超负荷作业。发现不正常情况应停机检查，不得在运转中修理。4、脚手架工程的安全管理①确保脚手架的构架和防护设施达到可靠和使用安全的要求，方可进行施工。②严格地按照规范、设计要求和有关规定进行脚手架的搭设、使用和拆除，坚决制止乱搭、乱改和乱用情况。③健全规章制度、加强规范管理、制止和杜绝违章指挥和违章作业。④完善防护措施和提高施管人员的自我保护意识和素质。planning,andgovernmentfinancing,andwholevillagerelocation,andfirstbuiltHousplit"ofprinciples,insistedbigcommunityplanning,andlargedistricttransformation,breakadministrativedivisionsboundaries,optimizationtownspatialstructure,speedupnewCommunityconstruction,formednewcommunitylivebuilding,andintensivewithgroundproject,andenterprisetaxinsurancerunning,andExpandemploymentandimprovepeople"slivelihoodshedchangedeconomicchain.Thesecond,onpovertyreliefanddevelopmentworkinthisbattlethemissionobjectivesforpovertyalleviationinthefilearealreadyquiteclear,wastheprevioustwoyears(2016-2017)concentratedhard,threeyearsafter(2018-2020),consolidationandimprovement,bytheendof2017,theCounty......Apoorvillageand......Librarydistrictall"pickhat"and"five-ten",......Alltheruralpooroutofpoverty,stabilitytoachieve"twoworryaboutthree".Toaccomplishthesetasks,winthebattleforpovertyalleviation,thekeyistofindouttheway,selectingtherightbreakthrough,effectivenessinordertoworkon.(A)toaccuratelyidentifyobjectsforpovertyalleviation.XIGeneralSecretarynotedthatthecriticaltimeofpovertyliesinprecision.Howtodoaccurate?"firsttaskistodobasicworksolid.Totaldemandisdowntovillage,household,persons,County,town,andvillagebooks,card'