项目 2 排水管道开槽施工 Section 10Construciton of Drainage Pipeline Work30课件讲解

项目2排水管道开槽施工Section10 ConstrucitonofDrainagePipelineWorks2.1.1城市排水工程基本认知2.1.1BasicUnderstandingofUrbanDrainageEngineering一、污水的分类I.ClassificationofSewage在使用过程中受到了不同程度的污染，改变了原来的化学成分和物理性质的水，叫污水。Waterthathasundergonevaryingdegreesofpollutionduringuse,alteringitsoriginalchemicalcompositionandphysicalproperties,iscalledsewage.生活污水DomesticSewage工业废水IndustrialWastewater按来源分ClassifiedbySource降水Precipitation城市污水UrbanSewage2.1.1城市排水工程基本认知2.1.1BasicUnderstandingofUrbanDrainageEngineering一、污水的分类I.ClassificationofSewage生活污水——人们日常生活中用过的水，厕所、浴室、盥洗、厨房、食堂和洗衣房。DomesticSewage—Waterusedindailylife,fromtoilets,bathrooms,washrooms,kitchens,dininghalls,andlaundries.来源：住宅、公共场所、机关、学校、医院、商店以及工厂中的生活间部分。Sources:Residences,publicplaces,governmentoffices,schools,hospitals,shops,andtheresidentialpartsoffactories.特点：含有较多的有机物。Characteristics:Containsalargeamountoforganicmatter.2.1.1城市排水工程基本认知2.1.1BasicUnderstandingofUrbanDrainageEngineering一、污水的分类I.ClassificationofSewage工业废水——工业生产中排出的废水。IndustrialWastewater—Wastewaterdischargedduringindustrialproduction.来源：各类工矿企业。Sources:Variousindustrialandminingenterprises.特点：成分复杂，受工业生产性质和工艺过程的影响明显，水量和水质变化大，对环境的危害大。Characteristics:Complexcomposition,significantlyinfluencedbythenatureofindustrialproductionandprocesses,withlargevariationsinwaterquantityandquality,andconsiderableenvironmentalimpact.2.1.1城市排水工程基本认知2.1.1BasicUnderstandingofUrbanDrainageEngineering一、污水的分类I.ClassificationofSewage

降水——指大气降水，包括雨、雪、雹、霜等。一般降水指的是雨水。Precipitation—Referstoatmosphericprecipitation,includingrain,snow,hail,andfrost.Precipitationgenerallyreferstorainwater.雨水特点：CharacteristicsofRainwater:一般比较清洁、径流量大。必须及时排泄，是排水的主要对象之一。Generallyclean,withalargerunoffvolume.Mustbedischargedpromptlyandisoneoftheprimarytargetsofdrainage.降雨初期径流的雨水由于会附带地面和屋面上的各种污染物质，使其受到污染，应予以重视。Theinitialrunoffofrainwatermaycarryvariouspollutantsfromsurfacesandrooftops,causingcontamination,whichshouldbegivenattention.二、城市排水系统的组成II.CompositionofUrbanDrainageSystems2.1.1城市排水工程基本知识2.1.1BasicKnowledgeofUrbanDrainageEngineering2.1.1城市排水工程基本知识2.1.1BasicKnowledgeofUrbanDrainageEngineering市政污水管道系统总平面示意GeneralPlanofMunicipalSewagePipelineSystem1—城市边界；2—排水流域边界；3—支管；4—干管；5—主干管；6—总泵站；7—压力管道；8—城市污水厂；9—出水口；10—事故排出口；11—工厂1—CityBoundary;2—DrainageBasinBoundary;3—BranchPipeline;4—MainPipeline;5—TrunkPipeline;6—MainPumpStation;7—PressurePipeline;8—UrbanSewagePlant;9—Outfall;10—EmergencyDischargePoint;11—Factory小区污水管道系统平面示意PlanofResidentialSewagePipelineSystem1—小区水管道；2—检查井；3—出户管；4—控制井；5—市政污水管道；6—市政污水检查井；7—小区主干管1—ResidentialWaterPipeline;2—InspectionWell;3—HouseholdPipeline;4—ControlWell;5—MunicipalSewagePipeline;6—MunicipalSewageInspectionWell;7—ResidentialTrunkPipeline二、城市排水系统的组成——污水系统II.CompositionofUrbanDrainageSystems—SewageSystemRiver2.1.1城市排水工程基本知识2.1.1BasicKnowledgeofUrbanDrainageEngineering二、城市排水系统的组成——雨水系统II.CompositionofUrbanDrainageSystems—RainwaterSystem降落在屋面上的雨水由天沟和雨水斗收集，通过落水管输送到地面，与降落在地面上的雨水一起形成地面径流，然后经过雨水口收集流入小区的雨水管道系统，经过小区的雨水管道系统流入市政雨水管道系统，然后通过出水口排放。因此雨水管道系统包括小区雨水管道系统和市政雨水管道系统两部分。Rainwaterfallingonrooftopsiscollectedbyguttersandrainwaterhoppers,transportedtothegroundviadownpipes,andcombineswithrainwateronthegroundtoformsurfacerunoff,whichisthencollectedbyrainwaterinlets,flowsintotheresidentialrainwaterpipelinesystem,andthenintothemunicipalrainwaterpipelinesystem,beforebeingdischargedthroughoutfalls.Therefore,therainwaterpipelinesystemincludestwoparts:theresidentialrainwaterpipelinesystemandthemunicipalrainwaterpipelinesystem.2.1.1城市排水工程基本知识2.1.1BasicKnowledgeofUrbanDrainageEngineering图雨水管道系统Diagram:RainwaterPipelineSystem1、2、3、4、5—建筑物；6—生活污水管道；7—生产污水管道；8—生产废水与雨水管道；9—雨水口；10—污水泵站；11—废水处理站；12—出水口；13—事故排出口；14—雨水出水口；15—压力管道1,2,3,4,5—Buildings;6—DomesticSewagePipeline;7—IndustrialSewagePipeline;8—IndustrialWastewaterandRainwaterPipeline;9—RainwaterInlet;