管道铺设非开挖技术介绍

整理文档很辛苦,赏杯茶钱您下走!

免费阅读已结束,点击下载阅读编辑剩下 ...

阅读已结束,您可以下载文档离线阅读编辑

资源描述

INTRODUCTIONTOTRENCHLESSTECHNOLOGY管道铺设非开挖技术的介绍摘抄整理:吕明刚TraditionalMethods传统的方法•Firstsuitedfor“greenfield”适用于未发展区域•Lowtech–littlechangeoverpast50yrs.技术含量低,近50年没有多大改进•Levelofplanning&implementationbasic对计划与实施手段的要求低•“Non-greenfield”–surfacedisruptions,undergroundutilities在市区施工,对地面上的物景产生损坏,对地下的管网产生威胁TrenchlessTechnologies非开挖技术•ThrustBoring&PipeJacking(pre-1900’s)顶管法•AugerBoring(1940)螺旋钻进法•ImpactMoling(1962)冲击矛法•DirectionalDrilling(1971)水平定向钻进法•ImpactRamming(1980)夯管法•PipeBursting(1980’s)爆(裂)管法DefinitionofTrenchlessTechnologies非开挖技术的定义“Afamilyofmethods,materials,andequipmentcapableofbeingusedfortheinstallationofneworreplacementorrehabilitationofexistingundergroundinfrastructurewithminimaldisruptiontosurfacetraffic,business,andotheractivities.”非开挖技术就是采用各种方法,材料,设备来铺设,更换或修复地下公用设施而能做到最小限度地扰民碍市NewConstructionTechniques新技术PipeBursting爆(裂)管法Microtunneling微型隧道法AugerBoring螺旋钻进法PipeJacking顶管法H.D.D.水平定向钻进法HorizontalDirectionalDrilling水平定向钻进法•Lengthsof15-1800m施工长度:15-1800米•Diametersof25-1200mm管径25-1200毫米•Applications:应用–utilityconduits市政工程–Pipelines管道设施–gravitysewers下水管道–forcemains压力管道–horizontalremediationwells治理污染的水平管群–geotechnicalinvestigations地质调查HDDProcess水平定向钻进过程HDDProcess水平钻进定进过程PipeBursting爆(裂)管法•Lengthsof100-900m施工长度:100-900米•Diametersof75-1060mm管道直径:70-1060毫米•Applications:应用–replacementofforcemains压力管的更换–replacementofgravitysewers下水道的更换StaticHead固定式裂管头PneumaticHead气动式裂管头HydraulicHead液压式裂管头PipeBurstingProcess(Static)爆管法的过程(固定裂管工艺)PipeBurstingProcess(StaticCont.)爆管法的过程(固定裂管工艺)续PipeBurstingProcess(Pneumatic)爆管法的过程(气动工法)Microtunneling微型隧道法•Lengthsof25-225m施工长度:25-225米•Diametersof250-3050mm管径:250-3050毫米•Applications:应用•gravitysewerinstallations下水管道的安装MicrotunnelingProcess微型隧道法施工过程PipeJacking顶管法•Lengthsofupto490mhavebeenachieved施工长度可达490米•Diametersof1060-3050mm管径介于1060-3050毫米•Applications:应用–largediametergravitysewersandforcemains大型下水管道和压力管道PipeJackingProcess顶管法施工过程AugerBoring螺旋横钻孔机•Lengthsof12-150m施工长度:12-150米•Diametersof200-1500mm管径:200-1500毫米•Applications:应用•relativelyshortcrossingsofpipesandconduits短距离的管道施工TWOCASEHISTORIES两个例子(一)PipeBursting爆管法(二)HorizontalDirectionalDrilling水平定向钻进法(一)爆管法Alternatives方案比较•Paralleltheexistinggravitytrunksewerwithanewgravitytrunksewer将新下水管与旧下水管平行安放•Constructaseriesof5newpumpingstationsandpumptoadjacentseweragearea需要设置5个新泵站,把污水泵送到邻近排污系统ParallelTrunkSewer平行管道方案•Advantages优点–Maintainsgravityflow维持重力流动•Disadvantages缺点–Constructioninsiltysandtoclayeymaterial3to6metresdeepwithhighgroundwaterincloseproximitytoMillstoneRiver,ahighlysensitiveCohosalmonhabitatstream.在3-6米的粘沙土层施工难度大;地下水位高;会影响三文鱼栖息地的生态–Additionalright-of-waywouldberequired需要额外的管位•CostEstimatedat$5.1million成本估算约5.1百万美元PumpedOption泵站方案•Advantages优点–Minimizesenvironmentalimpactsaspumpstationsandforcemainsforthemostpartwouldbeconstructedinexistingright-of-ways.对环境扰动小•Disadvantages缺点–AddedundesirablelongtermoperationalcoststotheCityofNanaimo给这个城市增加了一些额外的长期营运成本•CostEstimatedat$5.2million成本估算约5.2百万美元PipeBurstingResearchedasaPossibleAlternative爆管法作为可能的另一选择•Advantages优点1.Lessenvironmentalimpactasexcavationisminimized由于极少动土,对环境影响小2.Gravityflowmaintained保持重力流动3.Noadditionalright-of-waysrequired无需额外的管位4.Nolongtermoperationalandmaintenancecostsassociatedwithpumpstations无需象泵站方案那样需要长期的营运和维护成本5.Morecosteffectivethanalternatives最经济的工法•Disadvantages缺点1.UpsizerequiredattheupperlimitofPBtechnologyinNorthAmerica;however,therehadbeenlimitedsuccess扩径要求已达北美的爆管的上限;但也有一些成功的实例2.Lengths100mto175m长度为100米至175米3.LimitedavailabilityofcontractorsinNorthAmericawithcapabilitytoperformupsizeofthisnature能做这样的扩径工程的承包商有限DemonstrationSection演示部分•Abilitytoburstprojectlengths(100mto175m)能施工100至175米的长度•Abilitytoburstpipecouplings能裂管接头•Abilitytoburstconcreteencasement能裂混凝土包封•Althoughsomedifficultiesencountered,remainingprojectwassubsequentlyawarded尽管遇到一些困难,项目最后获得通过。350mm(14”)750mm(30”)650mm(26”)(二)HorizontalDirectionalDrilling水平定向钻进法定向钻在美国信息高速网路上的应用

1 / 32
下载文档,编辑使用

©2015-2020 m.777doc.com 三七文档.

备案号:鲁ICP备2024069028号-1 客服联系 QQ:2149211541

×
保存成功