METHODSTATEMENT
FORSOILCEMETNWALL
(YANGONINNOCITYDEVELOPMENTPROJECT)
Sep2017
Contents
TOC\o1-2\u1.SOILCEMENTWALL 1
1.1Summary 1
1.2.Mobilization 2
1.3MaterialSupplyAndMethodOfTransportAndStorage 5
1.4SCMWork 6
1.5QA/QC 12
1.6.TestImplementation 13
1.7.OrganizationOfProjectTeam 15
1.8.HESManagementPlan 16
1.SOILCEMENTWALL
1.1Summary
1.1.1.SoilCementWall(SCM)methodistheprocessofimprovingpropertiesofexistingsoils,whichareessentiallysoftclay,bymixingstabilizingmaterial,cement,withexistingsoils.
1.1.2.Soilcementwallscanbeinstalledbymechanicalmixingmethodbymeansofwetmixing(slurrytype).Themixingofstabilizingmaterialtotheexistingsoilsatvariouslevelsshallcreatesoilcolumnswithapredeterminedstrength,depthanddiameter.
1.1.3.QuantityofWorks
ExtensionLength:750m(asshowninfigure1.1)
HoleQuantity:751nos
HoleDiameter:D1300mm,C.T.C1,000mm
Depth:11.5~18.6m
TotalHoleLength:13,435.75m
Figure1.1SCMArea
1.2.Mobilization
1.2.1.Equipment
JUZ180-2willbeusedtosoilcementwallconstruction.JUZ180-2is2axistwinaugermixingpilemachine.Themachinespecificationisshownasfollows.
Figure1.2SCMMachine
Figure1.3SCMRig
Figure1.4CementSlurryPlantandSCMRigs
Table1.12Axistwinaugerspecification
NO.
NAME
QTY
SPECIFICATION
1
2Axistwinauger
1ST
(110kw*8p*380V*2ST)20RPM
2
Controlpanel
2ST
(110KW*8P*380V)
3
Cable
2ST
(95SQ*3C*40M)
4
Cable
1ST
(125SQ*3C*6M)
5
R-rod
6ST
(Φ267*21.4T*120M*6M)
6
R-rod
2ST
(Φ267*21.4T*120M*3M)
7
Mixingbit
4ST
(Φ1300*Φ267*120M*4M)
8
MixingBand
4ST
(Φ267*C/L1000*2TWIN)
9
BUSING
8ST
(Φ270*325)(SHEEL)
TheplantsforSCWarelistedbelowinTable1.2.
Table1.2Equipmentlists
NO.
EQUIPMENTNAME
PARAMETER/
CAPACITY
QUANTITY
PRODUCTION
1
Basemachine(JZU180)
20×7m
1
China
2
Auger(SW300)
2×110kW
1
Korea
3
Shaft(GH1300)
2×Φ1300
1
China
4
Mixingsystem
(JBZ-60)
mixingdrum
30kW,2.5m3/drump
1
C