土方工程方案中英文对照

PAGE16-江苏南通二建集团有限公司.2.土方工程Earthwork2.1.土方工程施工方案Constructionscheme由于工程地坪板、地坪梁、承台标高不一致，且相差甚远，但承台布置密集，开挖后相互间的距离很小，故考虑每区土方先满堂大开挖至地坪梁垫层底(个别地坪梁标高或低或高于此标高的另外处理)，然后进行承台基坑、基槽（同一轴线上承台相互间距离很小）土方的开挖，开挖时大开挖与承台基坑同时进行，承台原则上按坑槽开挖，并视承台间的大小，中间能留下的土方尽量留下，以减少土方开挖与回填工作量。Elevationsofterraceslab,beamandcapsaredifferentandcapdensityislarge,withsmallspacingafterexcavation,soeachareaisfullyexcavatedtobottomofbeambeddingcourse(beamswithhigherorlowerelevationsshallbetreatedotherwise),thenthecapfoundationtrenchesaredug(spacingbetweencapsinsameaxisisverysmall).Largescaleexcavationisdonewithcapfoundationtrenchexcavation.Earthbetweencapsshallberetainedasfaraspossibletoreduceearthworksandbackfillworks.主厂房土方开挖计划从B、C区域交接伸缩缝eq\o\ac(○,12)轴、eq\o\ac(○,13)轴分别向两端同时开挖，即B区→A区、C区→D区，计划每区3天完成土方开挖。B区土方开挖量大约9000m3，A区土方开挖量大约8000m3，采用3台PC220-7反铲挖掘机开挖；C区土方开挖量大约11000m3，D区土方开挖量大约12000m3，采用4台PC220-7反铲挖掘机开挖。另外考虑有部分桩高于设计标高，配备4台PC120-6小型挖掘机进行工程桩之间的土方开挖，人工紧跟配合清理。Forearthworkofmainbuilding,itisplannedtoexcavatesimultaneouslyfromaxiseq\o\ac(○,12)andaxiseq\o\ac(○,13)(expansionjointatcrossingofBareaandCarea),namelyfromareaBtoareaAandfromareaCtoareaD.Excavationofeachareaisplannedtobefinishedwithinthreedays.About9000m3soilisexcavatedinareaBandabout8000m3soilisexcavatedfromareaAandthreePC220-7backhoeexcavatorsareused.About12000m3soilisexcavatedinareaDandfourPC220-7backhoeexcavatorsareused.Consideringthatsomepilesarehigherthandesignedelevation,fourPC120-6smallexcavatorsareusedtoexcavatesoilamongpilesandsoilisclearedawaybymanpower.说明：大开挖后，除上图中部位外其他承台均开挖基坑Note:afterlargescaleexcavation,foundationtrenchesofcapsnotmarkedaboveshallbeexcavated.主厂房承台开挖沟槽示意图SketchmapofcapfoundationtrenchexcavationofmainbuildingA区：全部大开挖至标高-1.35m，eq\o\ac(○,B)~eq\o\ac(○,C)轴、eq\o\ac(○,E)~eq\o\ac(○,F)轴、eq\o\ac(○,H)~eq\o\ac(○,J)轴、eq\o\ac(○,L)~eq\o\ac(○,M)轴分别开挖沟槽至承台垫层底标高，其它承台均开挖独立基坑至设计垫层底标高。AreaA:thewholeareaisexcavatedtoelevation-1.35m.Foundationtrenchesalongaxiseq\o\ac(○,B)~eq\o\ac(○,C),eq\o\ac(○,E)~eq\o\ac(○,F),eq\o\ac(○,H)~eq\o\ac(○,J)andeq\o\ac(○,L)~eq\o\ac(○,M)aredugtobottomelevationofcapbeddingcourse,forothercaps,isolatedtrenchesaredugtodesignedbottomelevationofbeddingcourse.B区：全部大开挖至标高-1.00m，eq\o\ac(○,7)~eq\o\ac(○,8)轴、eq\o\ac(○,9)轴、eq\o\ac(○,10)轴、eq\o\ac(○,11)轴、eq\o\ac(○,12)~eq\o\ac(○,13)轴、eq\o\ac(○,B)轴、eq\o\ac(○,M)轴分别开挖沟槽至承台垫层底标高，其它承台均开挖独立基坑至设计垫层底标高。AreaB:thewholeareaisexcavatedtoelevation-1.00m.Foundationtrenchesalongaxiseq\o\ac(○,7)~eq\o\ac(○,8),eq\o\ac(○,9),eq\o\ac(○,10),eq\o\ac(○,11),eq\o\ac(○,12)~eq\o\ac(○,13),eq\o\ac(○,B),andeq\o\ac(○,M)aredugtobottomelevationofcapbeddingcourse,forothercaps,isolatedtrenchesaredugtodesignedbottomelevationofbeddingcourse.C区：全部大开挖至标高-1.35m，eq\o\ac(○,12)~eq\o\ac(○,13)轴、eq\o\ac(○,21)~eq\o\ac(○,22)轴、eq\o\ac(○,B)~eq\o\ac(○,C)轴、eq\o\ac(○,E)~eq\o\ac(○,F)轴、eq\o\ac(○,H)~eq\o\ac(○,J)轴、eq\o\ac(○,L)~eq\o\ac(○,M)轴分别开挖沟槽至承台垫层底标高，其它承台均开挖独立基坑至设计垫层底标高。AreaC:thewholeareaisexcavatedtoelevation-1.35m.Foundationtrenchesalongaxiseq\o\ac(○,12)~eq\o\ac(○,13),eq\o\ac(○,21)~eq\o\ac(○,22),eq\o\ac(○,B)~eq\o\ac(○,C),eq\o\ac(○,E)~eq\o\ac(○,F),eq\o\ac(○,H)~eq\o\ac(○,J)andeq\o\ac(○,L)~eq\o\ac(○,M)aredugtobottomelevationofcapbeddingcourse,forothercaps,isolatedtrenchesaredugtodesignedbottomelevationofbeddingcourse.D区：eq\o\ac(○,22)~eq\o\ac(○,27)轴大开挖标高为-1.45m，eq\o\ac(○,27)~eq\o\ac(○,34)轴大开挖标高为-1.25m，eq\o\ac(○,B)~eq\o\ac(○,C)轴、eq\o\ac(○,E)~eq\o\ac(○,F)轴、eq\o\ac(○,H)~eq\o\ac(○,J)轴、eq\o\ac(○,L)~eq\o\ac(○,M)轴、eq\o\ac(○,34)轴分别开挖沟槽至承台垫层底标高，其它承台均开挖独立基坑至设计垫层底标高。AreaD:foundationtrenchisexcavatedtoelevation-1.45malongaxiseq\o\ac(○,22)~eq\o\ac(○,27)andto-1.25malongaxiseq\o\ac(○,27)~eq\o\ac(○,34).Foundationtrenchesalongaxiseq\o\ac(○,B)~eq\o\ac(○,C),eq\o\ac(○,E)~eq\o\ac(○,F),eq\o\ac(○,H)~eq\o\ac(○,J),eq\o\ac(○,L)~eq\o\ac(○,M)andeq\o\ac(○,34)aredugtobottomelevationofcapbeddingcourse,forothercaps,isolatedtrenchesaredugtodesignedbottomelevationofbeddingcourse.工作面按支模与排水每边50cm左右考虑，同时放坡系数考虑为1:0.3。50cmisleftfordrainageandformboardateachsideandtheslopinggradientis1:0.3.所挖土方考虑采用自卸汽车（按需要配备）运输到厂区南北两端或业主指定点临时堆放。Excavatedsoilistransportedthroughdumptrucks(equippedasperdemand)tonorthandsouthendsofthesiteortheplaceappointedbytheproprietor.回填土为原先所挖出的原土，回填时采用自卸汽车运输到基坑边，再采用反铲挖掘机、塔吊等将土料运送到回填部位。回填采用振动打夯机、蛙式打夯机等分层夯实，并按规范取样做环刀试验，确保压实系数λc≥0.92。挖掘机在基坑内行走必须先在承台、地坪梁上垫800mm高以上的土并加设走道板，不得直接压到承台与地坪梁。Excavatedsoilistransportedthroughdumptruckstothesidesoffoundationtrenchandbackfilledthroughbackhoeexcavatorsandtowercranes.Backfilledsoiliscompactedlayerbylayerthroughvibratinghammersandfroghammers.Ringsamplertestiscarriedoutaspercoderequirementsandcompactioncoefficientλc≥0.92shallbeensured.Ifexcavatorworksinthefoundationtrench,soilnotlessthan800mmshallbepavedovercapandterracebeamandwalkwayplatesshallbeaddedforprotection.场内不修建土方车辆临时道路，采用走道板铺设临时便道。Notemporaryroadsarebuiltforsoiltransportvehiclesandwalkwayplatesareusedtopavetemporaryserviceroads.如遇到明浜、暗浜等，先将浜土、浜填土清理，换填土质良好的素土分层压实，或采用砂石、砼换填。Openandhiddencreeksoil,ifany,shallberemovedandreplacedwithgoodplainsoilandcompactedlayerbylayerorreplacedwithsandorconcrete.2.2.土方开挖施工准备Preparationsforearthworkconstruction学习和审查施工图纸、施工方案，了解开挖路线、顺序、范围、基坑标高、边坡坡度、排水措施、集水坑位置，核对轴线、标高、灰线。Constructionschemesanddrawingsshallbecheckedandstudiedknowexcavationroutes,sequence,range,elevationoffoundationtrench,slopegradient,drainagemeasuresandlocationsofsumpholes,moreover,axes,elevationsandgraylinesshallbechecked.落实好土方堆放点，并按相关规定办理好有关手续。土方如需外运，及时通知市容、交警、环卫等有关部门，以便相互配合避免发生意外事件。Siteforplacingsoilshallbedeterminedandrelatedproceduresshallbecompletedasperrelevantregulations.Ifsoilneedstobetransportedoutside,relateddepartmentsaboutenvironment,sanitation,trafficpolicetoasktheircooperationtopreventaccidents.熟悉工作区段的地形、地貌及地上、地下障碍物（地下电缆、管道等）。平整施工场地、道路，保证土方机械运行道路畅通，必要时铺设走道板临时道路。Informationabouttopography,groundandundergroundbarriers(cables,pipelinesandsoon)withinworkingsectionshallbefamiliar.Constructionsiteandroadsshallbeleveledtoensuresmoothtrafficforsoiltransportvehicles,ifnecessary,temporaryroadsshallbepavedusingwalkwayplates.做好排水准备（水泵、水带），修整地面排水沟。Preparationsshallbemadefordrainageandguttershallbetrimmed.联系好挖掘机及运输车辆，组织安排好作业人员及班次，准备好铁锹、镐、安全防护用品等物资。Excavatorsandtransportvehiclesshallbepreparedandworkersandteamordershallbewellorganizedandmaterialslikeshovel,pickaxandsafeguardarticlesshallbeprepared.测量放线及测量桩点的保护：Protectionoflinesandpiles:在土方开挖之前，场内所有建筑物的定位桩，全部测量准确。明确在桩基施工阶段定位桩及控制桩是否产生移位，若有移位应会合监理、建设单位研究处理方案。Beforeexcavation,allgaugepilesforbuildingswithinsiteshallbeaccuratelymeasured.Ifdisplacementofgaugepilesandcontrolpegsoccursduringconstructionofpilefoundation,treatmentschemeshallbemadewiththecooperationofsupervisionunitanddevelopmentunit.对场边道路及场内的临时设施做好定位标记，以备观测。Roadsnearbysiteandin-sitetemporaryfacilitiesshallbepositionedandmarkedforobservation.在基坑开挖前，根据施工图纸、建筑轴线位置放出土方开挖边线，确定土方开挖流程。Beforeexcavationoffoundationtrench,sidelinesforearthworkshallbedrawnasperconstructiondrawingsandbuildingaxesandexcavationflowshallbedetermined.土方的机械施工易碰压测量桩，因此，在基坑开挖前，基坑开挖范围内的所有轴线桩和水准点都引出施工活动区域以外，并设置涂刷白漆的钢筋支架予以保护。Topreventearthdiggingmachinesaffectingpiles,positionsofallpileaxesandreferencepointswithinexcavationrangeareprojectedtooutsideplacesandprotectedwithsteelbracketsbrushedwithwhitepaint.所有的测量桩、水准点一经核实后，由测量员对其进行定期检查复核，以确保控制点的准确性。Afterallpilesandreferencepointsareverified,theyshallbecheckedregularlybysurveyortoensuretheaccuracyofcontrolpoints.夜间施工照明的准备：Preparationsforilluminationforconstructionatnight基坑开挖期间，机械施工用电主要是夜间照明和机械的现场小修用电。Duringexcavationoffoundationtrench,powerismainlyconsumedbynightilluminationandminoroverhaulinthesite.所有用电均从现场配备的配电箱内接引，通过手提小电箱架空引至土方开挖区域。施工用电必须由值班电工专门负责，禁止操作工人随意移动。Allpowerisledoutfromthedistributionboxandledtoareaofexcavationthroughportablesmalljackbox.Powerforconstructionshallbechargedbyspeciallyappointedelectricianandworkersareforbiddentomovepowerlinesdiscretionarily.施工现场的夜间照明用钢管架子架高，安置若干个5KW镝灯照明。Powerlinesfornightilluminationinconstructionsiteshallbeelevatedthroughsteelpipestandsandanumberof5KWdysprosiumlampsshallbeinstalled.2.3.土方开挖Earthexcavation本工程土方开挖主要为地坪梁垫层底以上基坑大开挖、承台基坑或沟槽开挖，开挖时先边后内，先远后近，先挖上层，后挖下层，沿灰线按施工顺序开挖，并按支模与排水工作面每边50cm、放坡系数1:0.3控制基坑尺寸与边坡。挖土接近至标高时，用水准仪跟测，严禁超挖，及时钉设基坑垫层标高点。露出的工程桩头及时撒白灰做标志，以确保挖土机不碰撞工程桩。由于部分工程桩高于设计标高、露出基坑上面，桩间采用小型挖掘机开挖，人工配合。开挖过程中，要注意随时补撒灰线，以确保基坑几何尺寸正确。每台挖土机配备清槽工4-5人，根据基坑内标高点清槽，将清槽余土抛至挖土机工作半径之内，随挖土机进度一次清至设计标高。Earthworksincludeslargescaleexcavationoffoundationtrenchabovebottomofterracebeambeddingcourseandexcavationofcapfoundationtrench.Theexcavationisperformedfromsidetoinside,fromfartonear,fromtoptobottomandalonggraylines.50cmisleftfordrainageandformboardateachsideandtheslopinggradientis1:0.3.Whendiggingtoelevation,levelisusedtosurveytostrictlypreventover-excavation.Elevationpointsofbeddingcourseinfoundationtrenchshallbenailed.Exposedpileheadsshallbetimelymarkedwithwhitewashtopreventbeingimpactedbyexcavators.Sincesomepilesarehigherthandesignedelevationandexposedoutoffoundationtrench,smallexcavatorsareusedtodigsoilamongpiles,withmanualoperationforcooperation.Graylinesshallbesupplementedduringexcavationtoguaranteecorrectdimensionsoffoundationtrench.4-5workersshallbeassignedforeachexcavatorforcleaninguptrench.Trenchshallbecleanedupasperelevationpointsandtheresidualsoilshallbethrownintorangeofworkingradiusofexcavatorandthetrenchshallbeexcavatedtothedesignedelevationinsingletime.每台挖土机配备2-3台自卸汽车，运土运至厂区内规定地点或业主指定点堆放，每个弃土点配置2台PC220-7反铲挖掘机、1台推土机配合堆土，并配备专人指挥土方车辆行驶路线，确保工地安全。2-3dumptrucksareequippedforeachexcavatorfortransportingsoiltoappointedpointswithinsiteorpointsappointedbytheproprietor.TwoPC220-7backhoeexcavatorsandonebulldozerareprovidedtopileupsoilateachpointandspecialpersonsareappointedtodirecttraffictoensuresecurity.人工清底完成后，办理完验槽和隐蔽验收手续后，抓紧垫层的施工。Aftertrenchbottomiscleanedupandproceduresforinspectingtrenchandconcealedworksarefinished,constructionofbeddingcourseshallbespeededup.2.4土方开挖注意事项Mattersneedattention开挖过程中要及时修正、修平边坡，随时注意观察土方边坡坡度的变化，发现异常情况应立即停止施工并及时上报，以便采取措施加强坑边稳定。Slopeshallbetimelytrimmedduringexcavationandgradientshallberegularlyobserved,ifthereisanyabnormalsituation,constructionshallbestoppedandthesituationshallbereportedtosuperiordepartmentfortakingmeasurestoreinforcetheslopetoimproveitsstability.地基土层缺陷的处理：开挖过程中要注意观察地基土质是否符合设计要求，如承台、电梯基坑下挖到暗浜或挖不到老土，须将淤泥、虚土等全部挖尽，用砼回填或级配砂石回填。Treatmentofsettlementoffoundationsoil:soilshallberegularlyobservedtoseewhetheritmeetsdesignrequirementsduringexcavation.Ifhiddencreekexistsundercaporelevatorfoundationorthereisnooldsoil,siltanddisturbedsoilshallbecompletelydugoutandbackfilledwithconcreteorgradedsandandstone.基坑开挖地面及坑内应设排水措施，及时排除雨水、周围的地表水。Drainagefacilitiesshallbeprovidedtodrainrainwaterandsurfacewaterfromfoundationtrench.加快基础施工步伐，缩短施工周期，尽量缩短暴露时间，防止土体产生严重回弹现象。Constructionoffoundationshallbespeededuptoshortenconstructionperiodandexposuretimetopreventsoilrebound.土方开挖接近基坑底标高时，应放慢挖土速度，不让挖土机械碰撞工程桩，并防止坑底土扰动。Excavationspeedshallbesloweddownwhendiggingtoelevationoftrenchbottomtopreventmachinesfromtouchingpilesanddisturbanceofbottomsoil.开挖土方时应有足够的照明，电工应日夜值班。Enoughlightsshallbeprovidedduringexcavationandelectriciansshallbeondutydayandnight.2.5土方开挖质量要求和质量保证措施Earthworkqualityrequirementsandqualityassurancemeasures质量要求：Qualityrequirements:边坡与边线符合规定，边坡为1:0.3，不得挖陡；底层土不得扰动。Slopeandsidelinesshallconformtorequirements;slopegradientis1:0.3;steepslopeshallbeavoided;bottomsoilshallnotbedisturbed.质量保证措施：Qualityassurancemeasures:开工前要做好各级技术准备和技术交底工作，施工技术人员（工长）、测量人员要熟悉图纸，掌握现场测量桩及水准点的位置尺寸。Technicalpreparationsandtechnicalexplanationshallbewellorganizedbeforecommencementandconstructiontechnicians(sectionchief)andsurveyorsshallbefamiliarwithdrawingsandmasterlocationsanddimensionsofpilesandreferencepointsforsurveying.施工要配备专职测量人员进行质量控制，要及时复撒灰线，将基坑开挖下口线测放到基坑底。及时控制开挖标高，严禁超挖，做到5m扇形挖土工作面内，标高白灰点不少于2个。同时工程桩顶应及时撒白灰做标志，以免挖掘机碰撞工程桩。Specialsurveyorsshallbeassignedtocontrolquality,timelyredrawgraylinesandprojectexcavationlinestotrenchbottom.Elevationshallbecontrolledtopreventover-excavation.Heightmarksofwhitewashshallbenotlessthantwowithin5msectorexcavationarea.Pileheadsshallbemarkedwithwhitewashtopreventbeingimpactedbyexcavators.开挖边坡时，尽量采用沟端开行，挖土机的开行中心线要对准边坡下口线。要坚持先修坡后挖土的操作方法。Soilattrenchendshallbeexcavatedfirstduringexcavationofslopeandexcavatorshalladvancealongthecenterlineaimingatthelowerslopeline.Theslopeshallbetrimmedbeforeearthexcavation.机械挖土过程中要配备足够的人工，一般每台挖土机要每班配备4～5人，随时配合清槽修坡，将土送至挖土机半径内。这种方法即可一次交成品，确保工程质量，又可节省劳动力，降低工程成本。Enoughworkersshallbeassignedduringearthexcavationand4～5workersareassignedtoeachexcavatorforcleaninguptrenchandtrimmingslopeandmovingsoilintoworkingradiusofexcavator,inthisway,foundationtrenchisexcavatedatsingletime,whichsaveslaborandreducescost.土方开挖后，及时跟进浇筑砼垫层。Afterearthexcavation,concretecushionshallbepouredintime.认真执行项目部制定的技术、质量管理制度。施工中要积累技术资料，如施工日记、设计变更洽商、验线记录等。Technicalsystemandqualitymanagementsystemmadebyprojectdepartmentshallbeearnestlyexecuted.Technicaldatasuchasbuilder'sdiary,designalterationpalaverandrecordoflinesinspectionshallbecollectedduringconstruction.2.6土方回填Backfillingofearthwork回填土以机械施工为主、人工配合，采用自卸汽车运输，挖掘机摊铺、夯实，并结合采用振动夯、蛙式夯分层回填压实，机械无法回填的部位采用人工回填、人工夯实。运土车、挖掘机在基坑内行走必须先在承台、地坪梁上垫800mm高以上的土并加设走道板，不得直接压到承台与地坪梁。Soilisbackfilledwithmachineandmanpower.Soilistransportedthroughdumptrucksandpavedwithexcavatorsandcompactedwithvibrationandfroghammerslayerbylayer.Placesunreachablebymachinearebackfilledmanuallyandcompacted.Ifexcavatorworksinthefoundationtrench,soilnotlessthan800mmshallbepavedovercapandterracebeamandwalkwayplatesshallbeaddedforprotection.回填顺序按基底由低至高分层夯填，回填前在基础四周侧面上做出填土高度控制线，回填分层厚度为20cm，填一层夯一层。在基础相对两侧或四周同时进行，分层压实。深浅两基坑应先填夯深基础，填至浅基坑标高时，再与浅基一起填夯。必须分段分层填土时，交接处应填成阶梯形，每层互相搭接，其搭接长度不少于每层填土厚度的两倍，上下层错缝距离不少于1.0m。Soilisbackfilledfromtrenchbottomtotopandcompactedlayerbylayer.Linesshallbemarkedonsidewallsoftrenchforcontrollingheightofbackfilledsoilandsoillayeris20cm.Soilisbackfilledsimultaneouslyfromtwooppositesidesorfoursidesandcompactedlayerbylayer.Deepertrenchshallbebackfilledtoelevationofshallowertrenchandcompactedfirstthenitisbackfilledandcompactedwithshallowtrench.Ifbackfillingbystagesandlayersisnecessary,thecrossingsectionshallbemadeintostaircaseshapeandtheoverlappinglengthofeachlayershallnotbelessthantwotimesofbackfillingthicknessofeachlayerandthejointsofupperandlowerlayershallbestaggeredforatleast1.0m.回填土料：含水率符合压实要求的原土，不得使用淤泥、耕土及含有有机杂质的土，粒径不大于50mm。土壤含水率按最优含水率控制，土料含水量以手握成团，落地开花为适宜。当回填土料难以满足要求时，与业主、设计、监理协商解决。Backfill:rawsoilwithqualifiedwatercontentisused;silt,moolandsoilwithorganicimpuritiesarenotused;graindiametershallnotbemorethan50mm.Watercontentshallbecontrolledwithoptimummoisturecontent.Oncebackfillisnotabletomeetrequirements,problemshallbesolvedthroughconsultationwithproprietor,designerandsupervisor.在打夯时，如出现弹性变形的土（俗称橡皮土），应将该部分土挖除，另用干土或含砂石较大的土回填。Ifsoilwithelasticdeformation(commonlyreferredtoasrubbersoil)isdiscoveredduringcompaction,itshallberemovedandbackfilledwithdrysoilorsoilwithmanysands.现场做好防雨和排水工作，防止地面水流入基坑内。雨天不应进行填方的施工。如必须施工时，应分段尽快完成，且宜采用碎石类土和砂土、洋灰等填料。已填好的土如遭水浸，应把稀泥铲掉后，方可继续回填。Preparationsshallbeperformedforrainpreventionanddrainagetoprventsurfacewaterfromflowingintofoundationtrench.Backfillshallnotbedoneduringrainydays,ifitisnecessary,theworkshallbeaccomplishedbysectionsasquickaspossible.Backfillmaterialslikefragmentalstone,sandysoilandcementarefavorable.Ifthebackfilledsoilisimmersedbywater,theslimeshallbeshoveledoffandbackfilled.按规范取样做环刀试验，确保压实系数λc≥0.92。Ringsamplertestiscarriedoutaspercoderequirementsandcompactioncoefficientλc≥0.92shallbeensured.2.7回填土质量要求Quaalityyreqquireementtsoffbacckfilll填土前抽除基坑坑内积水、淤淤泥、饱和和土、杂物物等。Accumullateddwatter,siltt,saaturaatedsoillanddsunndrieesinntheefouundattiontrennchsshalllberemoovedbefoorebbackffilliing.回填土料：含水水率符合压压实要求的的原土，不不得使用淤淤泥、耕土土及含有有有机杂质的的土，粒径径不大于550mm。分分层厚度3300，含水率率最佳，表表面平整度度20。Backfilll:rrawssoilwithhquaalifiiedwwaterrconntenttisusedd;siilt,moollanddsoiilwiithoorganniciimpurritieesarrenootussed;graiindiiamettersshalllnottbemoreethaan500mm.Wateercoontenntshhallbeccontrrolleedwiithooptimmummmoisttureconttent..Layyertthickknesssis300mmm.ssurfaacepplaneenesssis20mmm.分层夯填，每层层铺土厚度度300mm。Soilissbacckfillledandcomppacteedlaayerbyllayerranddeacchlaayeris3300mmm.施工中杜绝产生生橡皮土，否否则要立即即更换处理理。Rubbersoillshaallbbereeplaccedddurinngcoonstrructiion.严格选用回填土土料，控制制含水量、夯夯实遍数等等是防止回回填土下沉沉的重要环环节。回填填过程中要要检查排水水措施，每每层填筑厚厚度、含水水量控