N23LECQ3CM010地下工程施工方案

中国核工业二三建设有限公司林德化医（重庆）项目部1页共19页Contents目录一、Projectoverview工程概况.........................................................1-3二、Fabricationreference编制依据.........................................................3-3三、Constructionprinciple施工准备.........................................................3-3四、Undergroundengineeringconstructionprocess地下工程施工流程..............................................4-9五、Undergroundengineeringconstructionprocessandconstructionmethods地下工程施工工艺及施工方法...........................................9-13六、Safetyattentions安全注意事项....................................................16-16中国核工业二三建设有限公司林德化医（重庆）项目部2页共19页一、ProjectOverview工程概况ThisprojectisLindeHuayi(Chongqing)GasesCo.,Ltd1BillionNm3/yearSyngasCO/H2project,locatedinChongqing(Changshou)ChemicalIndustryPark,andthemainworkcontainssubstation、office、partsstock、compressionunit、powerabsorptionunit、washingunit、rawmaterialgascompressorunit、hightemperatureshiftunitetc..本项目为林德化医（重庆）气体有限公司10亿Nm3/年合成气制备CO/H2项目，位于重庆（长寿）化工园区内，其中主体工作包括变电所、办公楼、备件仓库、压缩单元、变电吸附单元、洗涤单元、原料气压缩单元、高温变换单元等。Theundergroundengineeringprojectsinclude:undergroundpipelinecomprisesacirculatingwatersystem,watersystem,watersupplyanddrainagesystem,thetotalextensionofabout1950mpipeline.本项目地下工程包括：地下管道包括循环水系统、工业水系统、给排水系统，各管道共计延长米约1950m。Firefightingpipe:integrationoftheprojectintheprojectareaissetDN500ringfirefightingpipe,andisarrangedalongSS150/80-1.6groundoutdoorfirehydrantandaswitchingvalve.Thisprojectfromtheintegrationofannularfiretubeonlineleadsto4DN300firetube,alongtheborderarearoadpulling,andintheareaoffireringpipeisarrangedalong5SS150/80-1.6typeoutdoorgroundhydrantsandaswitchingvalve.消防管网:一体化项目在本项目界区外已设置DN500环状消防管网，并沿线设置SS150/80-1.6型地上式室外消火栓及切换阀门。本项目从一体化环状消防管网上引出4根DN300消防管，沿界区道路边敷设，并在界区内消防环管沿线设置5只SS150/80-1.6型室外地上式消火栓及切换阀门。Rainwaterdrainagepipenetwork:diameteroflessthan600ismadeofpolyethylene(PE)spiralcorrugatedtube,heatshrinkablebeltconnection.DN600usesreinforcedconcretepipes,cementmortarsocketconnection.雨水排水管网：直径小于600采用聚乙烯(PE)螺旋波纹管，热收缩带连接。DN600采用钢筋混凝土管，水泥砂浆承插连接。N1DEAwashingunit1,2productionsewagepipelineusingductileironpipes,rubberringsealconnection,apressureproductionsewagepipewithcarbonsteelpipe,weldedorflangedconnections,substationaccidentoilfirewaterpipelineusingcarbonsteelpipe,weldedorflangedconnections,sewagepipewithpolyethylenespiralcorrugatedtube,(PE)thermalcontractionbeltconnection.N1DEA洗涤单元1、2生产污水管道采用球墨铸铁管，橡胶圈密封连接，有压生产污水管道采用碳钢管，焊接或法兰连接，变电所事故含油消防废水管道采用碳钢管，焊接或法兰连接，生活污水管采用聚乙烯(PE)螺旋波纹管，热收缩带连接。Factoryproduction:theuseofcarbonsteelpipe,weldedpipe,outdoorlivingwater(PE)buriedpartofthesteelmeshskeletonPEcompositepipe,electricmeltingconnection.厂区生产水管：采用碳钢管，焊接，室外生活水管(PE)埋地部分采用钢丝网骨架PE复合管，电热熔连接。中国核工业二三建设有限公司林德化医（重庆）项目部3页共19页Productionsewage:madeofductilecastironpipes,rubberring.Pressureproductionwastewaterusingcarbonsteelpipe,weldedorflangedconnections.生产污水：采用球墨铸铁管道，橡胶圈密封连接。有压生产污水采用碳钢管，焊接或法兰连接。Inordertoensuretheconstructionsafety、quality、highefficiency、especiallythepreparationofthescheme.为保证施工安全、优质、高效完成，特编制本方案。二、Fabricationreference编制依据Thedesigndrawingoftheproject本工程项目设计图文件FoundationsurveyReport地基勘察报告《Buildingthefoundationandbasicconstructionandacceptancespecification》《建筑地基与基础施工及验收规范》.........................................（GBJ202-2002）《Engineeringsurveyingspecification》《工程测量规范》........................................................（GB50026-2007）《Constructionqualityacceptancespecificationofmasonry》《砌体工程施工质量验收规范》............................................（GB50203-2002）《Constructionqualityacceptancespecificationofconcretestructure》《混凝土结构工程施工质量验收规范》......................................（GB50204-2002）《Acceptanceunifiedstandardofengineeringconstructionquality》《建筑工程施工质量验收统一标准》........................................（GB50300-2001）《Constructionandacceptancespecificationofdrainagepipeline》《给水排水管道工程施工及验收规范》.....................................(GB50268-2008)《Buriedplasticdrainagepipelineengineering》《埋地塑料排水管道工程技术规程》....................................（DG/TJ08-308-2002）三、Constructionprinciple施工准备Theorganizationconstructionandtechnicalpersonnelshallfamiliarwiththedrawings,constructiontechnologyandtechnicalstandard;understandthedesignrequirementstomeetthetechnicalstandards,clearprocess.组织施工技术人员熟悉图纸、施工工艺及有关技术规范，了解设计要求达到的技术标准、明确工艺流程。Theconstructionschemewhichbepreparedandapprovedshallbecountedastheoperationinstruction;Introducethetechnologytoconstructor.将编制好且通过审批的《施工方案》，向人员进行技术交底、组织人员学习。Introducethesafetytechniquetoworkers;makefullpreparationsforthesecuritytechnology.中国核工业二三建设有限公司林德化医（重庆）项目部4页共19页对施工人员进行安全技术交底，做好充分的安全技术准备工作。Constructionsurvey,accordingtocodeforconstructionandacceptanceofwatersupplyanddrainageengineeringandthesceneHSEexcavationrequirements,makingpipetrenchbottomwidthandupperexcavationgeometry,bymeasuringthecontrolpointwithtotalstationinstrumentontheexportsideofthetrenchispositioned,andlimelinemarkingexcavationsidelines.Throughfieldelevationcontrolpiles,controlthedepthofexcavation,whenthedepthofexcavationafterreachingtherequiredbytotalstationinstrumentemitsinspectionwell,valvewells,