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某厂区室外中压电缆敷设施工方案（中英文）1)A472建筑（220/35kV变电站）出线回路：A472Building(220/35kVsubstation)outletcircuit
由A472变电站引出3路35kV出线。其中：
2)B301S建筑（35/10kV变电站）出线回路：B301Sbuilding(35/10kVsubstation)outletcircuit:
GBT51262-2017 建设工程造价鉴定规范.pdf3)C581建筑（35/10kV变电站）出线回路：C581building(35/10kVsubstation)outletcircuit:
4)接地电缆回路：Groundcableloop:
从A472敷设一根95mm2裸铜线去C581，同时从C581敷设四根95mm2裸铜线，分别引至B551、A507、B553和C521，作等电位联结。以上电缆线路均沿规划路径埋地敷设。Laya95mm2barecopperwiretoC581fromA472.MeanwhilelayfourbarecopperwirestoB551,A507,B553andC521forequipotentialbonding.Allcablelineswillbelaidundergroundalongtheplanningpath.
5)控制电缆回路：Controlcablecircuit:
安装在HCL装置现场的3.6MW马达上的电流信号通过一根直埋敷设的铠装控制电缆直接接入10KV开关柜。Thecurrentsignalinstalledon3.6MWmotorintheHCLdevicessitepassesthroughaburiedarmoredcontrolcabledirectaccessto10KVswitchgear.
二．编制依据CompilationBasis
1）根据电气包（中压部分）招标文件及招标图纸编制而成。AccordingtoElectricpackage(MV)thetenderandtenderdrawings.
三．施工工艺流程：ConstructionProcess
前期准备→电缆直埋敷设施工→铺沙盖砖→回填土→埋标志桩→挂标志牌
Preparation→Cableburiedpulling→spreadsandandbuildbricks→backfill→burysignstake→hangsigns
四.前期准备Preparation
4.1技术准备TechnicalPreparation
1）针对本工程特点编审详细的电缆沟施工作业指导书，及时组织图纸会审。Compileparticularcabletrenchconstructionengineeringguidebookasperprojectcharacteristicsandorganizepromptlydrawingsjointexamination.
2)根据上海市电力建设工程施工工艺实施细则结合本工程实际编写电缆沟施工工艺卡，并组织实施。CompileconstructiontechniquecardsaccordingtotheShanghaiMunicipalElectricPowerConstructionEngineeringConstructionTechnologyImplementationDetailsandorganizeitsimplementation.
4.2材料准备MaterialPreparation
1)所有材料规格型号及电压等级应符合设计要求，并有产品合格证。Allmaterialspecifications,modelsandvoltagelevelshouldmeetdesignrequirementsandhaveproductcertificates.
2)每盘电缆上应标明电缆规格、型号、电压等级、长度及出厂日期。电缆盘应完好无损。
Eachcableshouldbemarkedonspecification,model,voltagelevel,lengthandmanufacturedate.Cabletrayshouldbeinagoodcondition.
3)电缆外观完好无损，铠装无锈蚀、无机械损伤，光泽明亮无皱折和扭曲现象。电缆外皮及绝缘展无老化及裂纹。
Thecableexteriorconditionisintact.Thearmorhasnorustandnomechanicaldamage.Itisshinyandbrightwithoutwrinklesanddistortions.Cablejacketandinsulationshownoagingandcracks.
4)电缆敷设前进行绝缘摇测或耐压试验。测量绝缘用兆欧表的额定电压，采用如下等级：Beforelayingcarryoutinsulationrollingtestorvoltagewithstandtest.Usemeggerratedvoltagetomeasureinsulation.Takethefollowinglevel:
10KV和35KV电缆：用2500V兆欧表。10KVand35KVCable:The2500Vmegger.
5)按设计和实际路径计算每根电缆的长度，合理安排每盘电缆，无电缆接头。Calculateeachcablelengthaccordingtodesignandactualpath.Arrangeeachcablereasonablywithoutcablejoints.
6)电缆保护套管已经预埋好，故只需要清理管内残渣，并作好管口保护。Cableprotectionsleevehasbeenembedded.Cleanpiperesidueandprotectnozzles.
7)其它附属材料：电缆标示桩、电缆标志牌、油漆、汽油、封铅、硬脂酸、白布带、橡皮包布、黑包布等均应符合要求。Othersubsidiarymaterial:cablemarkingpiles,cablesigns,paint,gasoline,sealedlead,stearicacid,whitebelt,rubbercloth,blackclothetc.shouldmeettherequirements.
4.3主要机具准备MainEquipmentPreparation
卷扬机、敷设电缆用支架及轴、电缆滚轮、转向导轮、吊链、滑轮、钢丝绳、大麻绳、千斤顶。Winches,bracketandshaftforcablelaying,cableroller,transferguidewheel,hangingchain,pulleys,wirerope,largehemprope,jacks.
4.4作业环境准备WorkEnvironmentPreparation
场地清理干净、道路畅通。Sitecleanuptheroadsunimpeded
放电缆用的设备安置完毕，且符合安全要求，电缆沿线照明照度满足施工要求。
Cablelayingequipmenthasplaced,andmeetssafetyrequirements.Cablelightingilluminationalongtheroutemeetstheconstructionrequirements.
五.敷设施工WorkofCablePulling
5.1电缆敷设施工工序WorkProcedure
机具布置→电缆展放→电缆敷设、固定Equipmentlayout→Layoffcable→laycableandfix
5.2机具布置LayoutofTools
5.2.1电缆的搬运及支架架设CableRemovalandCableTray
5.2.2卷扬机与滑轮的布置WinchandPulleyArrangement
电缆架与卷扬机布置见下图：Cablerackandwincharrangementseebelow:
1)电缆展放可用人力拉引或机械牵引。当采用机械牵引时，用机械的最大牵引强度宜满足下表的规定，其速度不宜超过15m/min，且应在牵引头或钢丝网套与牵引钢缆之间装设防捻器。Usemanualormechanicaltraction.Whenusingmechanicaltraction,themaximummechanicalstrengthshouldmeettherequirementsinTable,itsspeedshouldnotexceed15m/min,andshouldinstallfortifiedtwisterbetweentractionheadorsteelmeshsleeveandpullingsteelcable.
Cablemaximumtractionstrength(N/mm2)
电缆最大牵引强度（N/mm2）
牵引方式traction
牵引头tractionhead
钢丝网套steelmeshsleeve
铝芯aluminumcore
铝套aluminumsheath
塑料护套plasticsheath
允许牵引强度allowabletractionstrength
本次采用机械牵引，采用钢丝网套直接塑料护套方式，按表计算允许最大牵引强度：Themechanicaltractionusesaluminumandplasticsheath.Calculateallowablemaximumtractionstrength:
35KV电缆：300mm2的单芯电缆，其允许最大牵引强度：
35KVcable:300mm2singlecable,theallowablemaximumtractionstrength:
F1=7*300=2100N
10KV电缆：95mm2的三芯铠装电缆，铅套，其允许最大牵引强度：
F2=10*95*3=2850N
185mm2的三芯铠装电缆，铅套，其允许最大牵引强度：
F3=10*185*3=5550N
2）牵引力和侧压力计算：Tractionandlateralpressurecalculation:
侧压力计算公式为：Thecalculatingformulalateralpressure:P=T/R
式中：P为侧压力（N/m）；T为牵引力（N）；R为弯曲半径（m）
Where:Pforlateralpressure(N/m);Tfortraction(N);Rforthebendradius(m)
式中：μ为摩擦系数，在滚轮上牵引时取0.1~0.2；
Where:μisfrictioncoefficient,wheeltractionis0.1~0.2
W为电缆每米重量（kg/m）；L为电缆长度（m）
Wiscablepermeterweight(kg/m);Liscablelength(m)
实际施工中，考虑实际情况，μ取0.12，R1取0.5m,R2取1.3m,R3取1.5m
Theactualconstructionshouldconsideractualcircumstances,μtakes0.12,R1takes0.5m,R2takes1.3m,R3takes1.5m
令T1=F1=2100N，则L1=2100/（9.8*0.12*4.17）=428m
T2=F2=2850N，则L2=2850/（9.8*0.12*4.04）=600m
T3=F3=5550N，则L3=5550/（9.8*0.12*6.44）=733m
P1=2100/0.5=4200N
P2=2850/1.3=2192N
P3=5550/1.5=3700N
所以，采用塑料护套直接拉动电缆时，35KV电缆每次允许拉428m电缆，其侧压力为4200N；10KV95mm2的电缆每次允许拉600m，其侧压力为2192N；10KV185mm2的电缆每次允许拉733m，其侧压力为3700N。Therefore,pullthecablewithplasticsheath.Eachtimetheallowablelengthof35KVcableis428manditslateralpressureis4200N;10KV95mm2cableis600mand2192Nand10KV185mm2cableis733mand3700N.
3）电缆展放时，电缆应从盘的上端引出，不应使电缆在地面摩擦拖拉。电缆上不得有铠装压扁、电缆绞拧、护层折裂等未消除的机械损伤。Pullcablefromtheupperplatetoavoidfrictionontheground.Armoredcablemaynotbecrushed.Donothavecabletwisted,retaininglayerfractureandothernoteliminatedmechanicaldamage.
5）每根电缆敷设好后，在电缆两端做好临时标示，以分清电缆回路及黄、绿、红三相。Maketemporarysignsatbothendsofcables.Identifycableloopandyellow,green,redphases.
5.4电缆敷设、固定CableLayingandFixing
2）电缆之间，电缆与其它管道、道路、建筑物等之间平行和交叉时的最小净距，应满足规范的要求。Theminimumparallelandcrossspacing betweencablesorbetweencablesandotherpipeline,roads,buildings,etc.shouldmeetthespecificationrequirements.
3）电缆与现有电缆交叉时，满足规范要求，保持足够间距。Crossoveringtheexistingcablestomeettheregulatoryrequirementsandmaintainadequatespacing.
5）冬季敷设电缆，温度达不到规范要求时，应将电缆提前加温。Inwinter,whenthetemperaturecannotmeetregulatoryrequirements,thecableshouldbeheatedinadvance.
六.覆砂盖砖SpreadSandandCoverBricks
1)电缆敷设完毕，应请建设单位、监理及质量监督部门作隐蔽工程验收，作好记录、签字。Askconstructionunit,supervisionandqualitysupervisiondepartmentsacceptconcealedproject,makerecordsanddothesignature.
2)电缆上面与电缆下面一样，覆盖10cm砂土或软土，然后用砖或电缆盖板将电缆盖好，覆盖宽度应超过电缆两侧5cm。Spread10cmsandorsoftsoilaboveorbelowcableandcoverwithbricksorboardswithwidthmorethan5cmofbothsides.
七.回填土BackfillEarth
1)直埋电缆回填土前，应经隐蔽工程验收合格。PriortoBuriedcablebackfillshallbeaccepted.
八.埋标桩BuryingStake
九.挂标志牌Hangingsigns
1)标志牌规格应一致，并有防腐性能，挂装应牢固。Thesignsshallbethesamesize,haveantisepticproperties,andmountedhangingshallbefirmly.
2)标志牌上应注明电缆编号、规格、型号及电压等级。Thesignsshouldindicatecablenumbers,specifications,modelsandvoltagelevel.
3)直埋电缆进出建筑物及电缆终端头应挂标志牌。Buriedcableaccesstobuildingsandcableterminationheadsshouldhangsigns.
4) 电缆标志牌同时应遵循业主标准。Cablesignsfollowownerstandard.
十.质量控制QualityControl
10.1主控项目MasterItems
检验方法：检查试验记录。TestMethod:Checktestrecords.
电缆敷设必须符合以下规定：电缆严禁有绞拧、铠装压扁、护层断裂和表面严重划伤等缺损，直埋敷设时，严禁在管道上面或下面平行敷设。Thecablelayingmustmeetthefollowingrequirements:Strictlyprohibittwist,armoredsquash,sheathfractureandseverelacerationsandothersurfacedefects.Forbidparallelpipelinelaying.
检验方法：观察检查和检查隐蔽工程记录。Testingmethod:Observeexaminationandcheckconcealedworkrecords
10.2一般项目GeneralItems
1)坐标和标高正确，排列整齐，标志桩和标志牌设置准确；防燃、隔热和防腐要求的电缆保护措施完整。Coordinateandelevationshouldbecorrectandarrangeneatly.Setupsignstakeandsignboardaccurately;takeprotectionflameproof,heatinsulationandcorrosionmatures.
2)电缆的埋置深度应符合下列要求：①电缆表面距地面的距离不应小于0.8m，且电缆应埋在冻土层以下。②在电缆引入建筑物、与地下建筑物交叉及绕过地下建筑物处等受条件限制时，可浅埋，但应采取保护措施。Thedepthofburiedcablesshouldmeetthefollowingrequirements:①Thedistancefromcablesurfacetogroundshouldbenotlessthan0.8m,andthecablesshouldbeburiedbelowthepermafrost.②Buryshallowlyifbeingrestrictedbytheconditiontopassthebuildingandbypassandcrossoverundergroundstructures,butshouldtakeprotectivemeasures.
3)直埋电缆铺砂盖板或砖时应防止不清除沟内杂物、不用细砂细土、盖板或砖不严，有遗漏部分，施工负责人应加强检查。Cleanupdebris,spreadfinesandandsoilsands,coverboardsorbrickstightlyandstrengtheninspectionsonmissingpart.
4)电缆进入室内电缆沟时，防止套管防水处理不好，沟内进水。应严格按规范和工艺要求施工。Whencablesarelaidinindoortrench,preventcasingforpoorwaterproofhandling.Workinstrictaccordancewithspecificationsandprocessrequirements.
5)有麻皮保护层的电缆进入室内，防止不作剥麻刷油防腐处理。Donotusestrippinghempbrushoilifbarkprotectivelayercablesarelaidindoor.
检验方法：观察检查和检查隐蔽工程记录及坐标图。Testingmethod:observeexaminationandcheckconcealedworksrecordsandcoordinatediagram.
十一.成品保护FinishedProtection
3)电缆两端头处的门窗装好，并加锁，防止电缆丢失或损毁。Installdoorsandwindowsandlockoncablebothends,topreventlossordamage.
十二.质量记录QualityRecord
12.1质量保证资料QualityAssuranceInformation
1)电缆产品合格证Cableproductcertification
2)电缆绝缘摇测记录或耐压试验记录Cableinsulationtestrollingorvoltagewithstandrecords
3)隐蔽工程验收记录Concealedprojectacceptance
12.2施工记录ConstructionofRecord
DB34／T 2324-2015 皖北地区公路小型构造物地基承载力测试技术规程1)自互检记录。Selfandmutualinspectionrecords
4）电缆走向实测图。Alignmentmeasuremap
十三.安全生产、文明施工要求和措施SafetyandCivilizedConstructionRequestsandMeasures
2)实行持证上岗操作制度，特殊工种操作人员必须持有特殊工种操作证，严禁无证操作，并及时做好登记。不断改善劳动条件，认真做好每个施工人员的劳动保护措施。Toimplementcertifiedoperatingsystem,specialtypesofworkmusthaveapermittooperate.Thosewithoutcertificatearenotallowedtoentersite,recordsmustbemade.Continuouslyimprovetheworkingconditionsandkeepthesafetymeasuresforeachworker.
3) 所有工作机具都经过业主验收合格后，贴上标签，方可使用。Allequipmentshouldbeinspected,acceptedbyownerandbelabeled.
4)电缆沟开挖直到回填土完工，应尽可能地均衡、连续施工，缩短工期；在有行人的场所内施工，电缆沟开挖后应有警示牌及维护。Constructinabalancedandcontinuouswaytoshortentheperiodbetweencabletrenchexcavationandbackfill;Thereshouldbewarningsignsandmaintenanceonpedestrianarea.
5)现场禁止吸烟，班前班中严禁饮酒。Nosmokingandalcoholduringworkingperiod.
6) 施工前做好技术交底和安全交底，对工人讲明工作中的安全注意事项DL／T 5161.17-2018标准下载，并做好JHA。DotechnicalandsecurityclarificationtotheworkersaboutsecurityprecautionsandmakeaJHA..
7) 总安全方案将遵循管理公司安全方案和业主的安全规定。Thesecurityplanshouldfollowthesafetyrequirements.