BIssue forApprovalAIssue forApproval/REV.DESCRIPTIONDATEDESIGNED BYCHECKED BYREVIEWEDBYAPPROVEDBYOWNEREVN TPMB3VIETNAM ELECTRICITYTHERMAL POWER PROJECT MANAGEMENT BOARD 3CONSULTANTEVNPfCC?POWER ENGINEERING CONSULTING JOINT STOCK COMPANY3CONTRACTORTHE CONSORTIUM OF CHENGDA-DEC-SWEPDI-ZEPCSUBCONTRACTORra刃KZHEJIANG THERMAL POWER CONSTRUCTION COMPANYPROJECT:DUYEN HAI 3 THERMAL POWER PLANT PROJECTCONTRACTNO:DH3-O5O82O11DOCUMENT NAME:Work ing Pla n for Main House Excavati onPROJECT CONTROL NO.:DH3-31U-C-WP-0002REV: BContents1 Project Overview 12 Reference Standards and Codes 13 Construction Preparation 13.1 Technique Preparation 13.2 Labor Power Preparation 13.3 Machinery Preparation 23.4 Material Preparation 23.5 Working Surroundings Preparation 23.6 Working Schedule 24 Main Method & Technique Measures 34.1 Construction Sequence & Methods 34.2 Slope 34.3 Steel pile 44.4 Drainage of Foundation Pit 64.5 Foundation Pit Monitoring 65 Quality Assurance Measures 65.1 Organization chart of QA/QC 65.2 Flow chart of quality problems treatment 75.3 Specific measures 86 Supplement of Guarantee Measures to the Schedule 86.1 Establish a Strict Censorship for Construction Schedule 86.2 Warranty the Supply of Materials & Outward Processing Components 86.3 The Coordination Work Between Civil Engineering & Equipments Installation 97 Safety & Civilized Construction 98 Attachment Drawing 118.1 Drawing of excavation for #1 main house 118.2 Layout of Drainage measures for #1 main house foundation pit 128.3 Steel Sheet piles survey points layout for #1 main house 138.4 Survey Record for Foundation Pit 148.5 Calculation for steel pile wall 15Working Plan for Main House Excavation1 Project OverviewProject Name : Duyen Hai 3 2x622MW Thermal Power Plant;The Owner: Power Gen erati on Corporati on 1The Con sulta nt: Power Engin eeri ng Con sult ing Joint Stock Compa ny 3Design Overview: The project of Vienam Duyen Hai 3 Power Plant is located in Duyen Hai, Tra Vinh Provinee. Which the foundation is located on mud layer or sea sand layer. Raw geographical elevation is -2.37m, and un dergr ound water level is -3.8m.Main house of #1 unit includes Turbine house and bunker bay, axis A D is 52.6m, axis 0 9 is 91m. The excavation cushion bottom elevation for foundation of main house are -4.1m、 -5.1m、 -6.1m、 -8.4m, the excavation cushion bottom elevation for turbine house foundation is 9.4m, the bunker bay cushion bottom elevati on is -6.1m.As for elevati on of some foun dati on is below un dergro und water level, and excavati on is deep, it is required to stress on dewateri ng for deep foun dati on pit and slop rein forceme nt to en sure the safety con struct ion.2 Refere nee Stan dards and CodesUn ified Sta ndard for Co nstructio nal Quality Accepta nee of Buildi ng En gi neering(GB 50300-2001)Code for Accepta nee of Co nstructio nal Quality of Buildi ng Fou ndation (GB 50202 2002)Code for Engineering Surveying (GB 50026-2007)3 Con struct ion Preparati on3.1 Tech nique Preparati onPrepare, review and approve method stateme nt in accorda nee with procedures.Prepare ITP in accorda nee with accepta nee sta ndard.Prepare con struct ion start report, reviewed and approved by related departme nts.Orga nize related pers onnel for draw ing joi nt review and tech nique en closure, mak ing record and archive.Before start work, perform tech nique and safety en closure for con structors.Complete site horizontal control network and leveling point monitoring work according to the surveying con trol point supplied by con struct ion un it.3.2 Labor Power Preparati onLabor required by this project is as follow ing table:S.N.Type of workQuan tityS.N.Type of workQuan tity1Site man ageme nt staff27Excavator driver42HSE Perso nnel18Pili ngmach ine driver23QC In spector19Other staff154Electricia n25Surveyor46Truck driver163.3 Machinery PreparationMach inery and equipme nts by this project is as followi ng table:S.N.NameTypeQua ntity (u nit)Remarks1Loader12Hydraulic excavator23Submersible pump2.2kw174Dump truck85LevelATO 3216Total Stati onNTS 312R+17Pili ng Machi neType 4501For steel sheet pili ng work3.4 Material PreparationPlastic film : 4000 m2;Sand bag： 600 m ;Scaffoldings： 7 t;Faste ning: 1000 pieces;Water pipes : 700m ;12m steel sheet piles : 160 pieces.All above material shall be traced in the whole con struct ion process, and added if found not eno ugh.3.5 Working Surroundings PreparationWater: lead from Phase 3 steel factory water pipes;Electricity: lead from II cab