扬巴污水提升泵站压密注浆施工组织设计方案

污水提升泵站压密注浆施工方案一、前言Preface污水提升泵站压密注浆主要针对其基坑底板下部的约1.8m厚的粉土，因其底板呈阶梯部，部份土体滑动，造成部份底板与其下部粉土的分离，而形成空洞，目前通过现场勘察，因破坏处为16×3×1.8m。因而要求采用注浆方式进行土体加固。Thisplanismainlyaimedatabout1.8mTHKpowdersoilinthebottomslaboffoundationpit.Asthebottomslabisinastepandpartofthesoilisslided,someslabsareseparatedfromthepowdersoil.Sothehollowsturnup.Afterthesiteinvestigation,asthebrokenareais16*3*1.8m,methodofgroutingshouldbeadoptedforthesoilstrengthening.二、压密注浆方法MethodologyforCompactionandGrouting该工程基坑底板现已浇注成功，依据现场的破坏程度及以往的施工经验，先通过人工方式在底板开孔，然后依据水灰比0.5~0.6的方案进行搅拌水泥浆，再将搅拌均匀的水泥浆用机械方式输入孔洞中，已达到加固地基土为目的。Thebottomslabinfoundationpithasbeensuccessfullyplaced.Accordingtothedamagedegreeandourconstructionexperience,firstlywewillmakeholebymanpower,secondlymixcementmortarinawatercementratioof0.5~0.6.Thencementmortarwillbeconveyedintoholesbymachinetomeettherequirement.三、施工淮备ConstructionPreparation1、设置制浆站、加浆站尽量减少移动次数。Establishthemortarprocessstationandaddingstationtominimizethetimesofremoval.2、设备调试，检查设备运行的情况。Equipmentcommissioning.Andchecktherunningstatusforequipments.3、备料、搭建水泥存放点。Materialpreparation.Andbuildthestorageforcement.四、施工计划ConstructionPlan1、施工设备：水泥浆压力泵一台；泥浆搅拌桶一台；储浆桶一只；注浆杆一根；注浆管50m。ConstructionEquipments:Onecementmortarpressurepump.Onebucketforcementmortarmixing.Onebucketforstorage.Onepoleformortarfillingand50mconduit.2、人员组织：施工现场在施工项目经理部的领导下，另配压密注浆现场施工负责人1人，熟练压密注浆工6人。StaffOrganization:AllsitestaffshallbeguidedbyP.M.,withonesiteconstructionsupervisorand6competentandexperiencedworkersforcompactionandgrouting.五、施工技术要求ConstructionTechnicalRequirements1、技术要求：TechnicalRequirements因施工地块现已浇注混凝土底板，固采用风镐进行人工开孔，孔距为2.0m~1.5m，呈梅花形布孔，这样有利于浆液充填。Asthesitehasbeenplacedwithconcrete,holeswillbemadebymanpowerwithairpick.Theseholeswillbeinaplumblossomshape,withclearanceof2.0m~1.5mtofacilitatethefullfilling.压浆设备采用200型高压泵注浆，机械动力采用自备柴油机动力，此泵最大压力可达到8MPa。200typeHPpumpandselfowneddieselgeneratorwillbeused.Themaximumpressureofpumpis8MPa.注浆时应采取跳越注浆，这样可使浆液充填密实。Itwillbegroutedinskiptomeetthedensityrequirement.2、工艺流程：WorkmanshipFlowChart人工依尺寸成孔搅拌水泥浆液小压力注浆待初凝后再度注浆封孔。ManualHolesMakingAsSizedCementMortarMixingGroutingwithLPSecondGrouting(Afteritisgenerallyconsolidated.)SealHoles3、注浆技术要求：TechnicalRequirementsforGrouting1)水泥浆液配制水灰比0.5~0.6；初次注浆时压力控制在0.2~0.3之间；待12小时后，再次注浆，二次注浆压力不得超过0.5MPa。以防止压力过大，造成基坑底板的破坏，注浆时可依据现场施工情况下调整注浆压力。Thewatercementratiois0.5~0.6.Intheinitialgrouting,thepressureshouldbecontrolledwithin0.2~0.3.Itwillbesecondlygroutedafter12h.Thesecondtimepressurecannotexceed0.5MPatoavoidthedamageforbottomslab.Thepressurecanbeadjustedaccordingtotheactualcondition.2)浆液配制采用425#普通硅酸盐水泥，水灰比0.5~0.6，注浆量以浆满出底板为止。425#Portlandcementwillbeusedformixing,withthewatercementratioof0.5~0.6.Theareamustbefilledtillthemortarexceedsthebottomslab.3)注浆管采用高压注浆管，接头处应保证可承受1.0MPa的压力。HPgroutingconduitshallbeused.Pressureintheendshouldbear1.0MPa.4)二次注浆后，应及时进行有效封孔，并且在泥浆搅拌时应进行充分搅拌，搅拌时间不小于五分钟。Afterthesecondgrouting,holesshouldbeblockedinatimelymanner.Andcementmortarmustbecompletelymixed,nolessthan5minutes.5)注浆过程中应时刻观察现场情况，以便控制注浆量与注浆压力，以免对基础底板造成不必要的破坏。Intheperiodofgrouting,takecareofthesiteconditionforthequantityandpressurecontrol.六、质量保证措施QualityAssuranceMeasures1、建立以项目负责为主的质量管理体系，严格落实各工序质量责作任制。Establishthequalitymanagementsystemandcarryouttheresponsibilitysystemforeachprocedure.2、认真观察现场施工情况，并做好现场施工记录。Carefullyinvestigatetheconstructionconditionandmakerecords.3、坚决执行质量否决权制度，不合格的分项工作坚决返工，加强分项工序的检查。Strictlyinsistonthequalityvetosystem.Theunacceptableworkmustbeproperlydoneagain.Strengthenthecheckforsub-items.4、工程全部结束后，提交施工资料。Constructiondocumentswillbesubmittedoncompletion.七、安全措施SafetyMeasures1、以项目负责人为首，各施工人员坚决执行现场施工管理人的管理，遵守厂规及各项制度。HeadedbyProjectResponsible,allsitestaffwillbesticktothecompanyregulationandallsafetysystems.2、各工序、工种严格按相应的安全规定作业，严禁“三违施工”。Allcraftsandproceduresshouldstrictlyfollowsafetyrules.“ThreeDisobeyedConstructions”areforbidden.说明星欣设计图库资料专卖店拥有最新最全的设计参考图库资料，内容涉及景观园林、建筑、规划、室内装修、建筑结构、暖通空调、给排水、电气设计、施工组织设计等各个领域的设计素材和设计图纸等参考学习资料。是为广大艺术设计工作者优质设计学习参考资料。本站所售的参考资料包括设计方案和施工图案例已达几十万套以上，总量在数千G以上。图库网址联系QQ：447255935电话：[phone]