the permanent ship lock of three gorges construction excavation and support of quality control分析Word下载.docx

the permanent ship lock of three gorges construction excavation and support of quality control分析Word下载.docx

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Abstract:

ThepermanentshiplockofThreeGorgesshiplockfortwo-fiveconsecutivetotallengthof6442m,oneofthemainsection1637m.Excavationoftwophases:

anexcavationofalargeareaexcavationtoexposethetopandSouth,theNorthSlopeExcavation;

twoaremainlyfortheexcavationofthemainsegmentlockslotcutexcavation.Supportconstruction,includingslope,chamberwall,supporting,mainlyAnchor,anchor,sprayconcreteandothersupportmethod.Supervisionbytakingcontrolofdynamiccontrolandkeycombinationofpre-pre-control,processmonitoringandpost-inspectionmethodofcombiningpairsofon-siteconstructionqualitycontrol.

Keywords:

:

ThreeGorgesshiplockconstructionsupervisionofexcavationandsupport

1ProjectOverview

1.1Thesizeoftheproject

LayoutofthepermanentshiplockofThreeGorgesProjectonthenorthsideofthedamontheleftbankTanziLing,forfiveconsecutivetwo-lock,lengthof6442m,inwhichtheupstreamapproachchannellength2113m,thedownstreamapproachchannel2722m,lockthemainsectionof1637mThetotalhead113.0m,single-stagechambermaximumworkinghead45.2m,theeffectivechambersizeof280m×

34m×

5m（length×

width×

thresholdonthedepth）,designedannualcapacityofone-wayshippingfor50milliont,DepartmentoftheThreeGorgesProjectthemainnavigationstructure.

Excavationandanchorretainingtheamountofmajorprojects:

Thetotalexcavationquantityis41.45millionm3,ofwhichanexcavationquantities18millionm3,twoexcavationquantity2345Wanm3;

anchor4182beam,high-strengthbolt98715.

1.2Excavationof

Thepermanentshiplockexcavationandanchorsupportconstructionintwophases,alarge-scaleexcavationofthemaingatetothetopoverthetopexcavationandslopeexcavationtoexposeamaximumslopeheightis170m,toensuretheslopeintheconstructionandsubsequentoperationduringthesecurityandstability,NaiShi1excavationandconstructionofthekeyanchor;

2excavatedinaprojectbasedonthechamberintothetankexcavation,maximumdepthof68m.

1.3anchorsupportconstruction

Ananchorsupportconstructioninordertomaintainthestabilityofthehighslopeforthepurposeofthesystemontheslope,anchorreinforcement,thesurfaceofsprayedconcretehangingnetclosed;

twoconcentratedinthegateslotsupportingverticalwall,themainsub-anchor,anchorsprayedconcreteandothertypesofsupportmethod.Anchorsystemscanbeclassifiedaccordingtothenatureoftheroleofanchorandrandomanchor,accordingtobondintoacohesivemannerandnon-bondedanchoranchor,accordingtosupportingtheformisdividedintothefirstanchorandtherighttowearsideanchor,accordingtoloadsizeisdividedinto1000kN,and3000kN-classAnchordesignaccordingtodifferentpositions,blockthesizeofthedifferentanchorreinforcementapproach.Boltalsosubsystemsandrandomanchorbolttwocategories,thesystemisdividedintoordinaryboltanchoraccordingtomaterial,highstrengthbolt（Ⅴgradesteel）twokinds.High-strengthboltbytheforceofasingle450kN,istheanchoringoftheimportantanddifficult,bothplayedontherockanchorrole,butalsototheliningwallofconcretehangingfrombranchessupportingtheroleofthepermanentshiplockisconsideredthe“lifeline”projects.

Twoon-sitequalitycontrol

2.1Qualitycontrolmethods

Supervisionofengineeringandprocessmodules,process-basedqualityprogramsinengineering-oriented,quantitative,andthewholeprocessoftotalqualitycontrol,concretecanbesummarizedas“three-three”systemofcontrolmeasures,knownas“threestage”control,“3inspectionsystem“control,”three-level“control.

2.1.1“Threestage”Controlof

“Three-stage”controlmeans“pre-control”,“programmed”and“endcontrol.”

1）“pre-control”astheexantecontrolis“activecontrol”ofthemaincontents,supervisionofconstructionbyqualifiedcontractorstoreviewtheorganizationoftheconstructionscheduleandconstructiontechnicalmeasuresforapproval,inspectioncontractorstoqualityassurancesystem,technicalmeasuresreallyimplemented,andorganizationaldesigntests,beoftechnicalproblems.Supervisionofinternalorganizationtoemphasizetheimplementationandpersonnelinplace,andthepreparationofthecorrespondingoperatingproceduresandsupervisionoftheimplementationofrulestoregulatetheon-sitesupervisionofbehavior,themeasureshavebeenimplementedonlyincaseswhereonlyallowedtoofficiallystarttheconstructionandsigntheorder.

2）“programmed”thattheconst