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SOLETANCHEBACHY DAMSPage 1
XIAOLANGDIXIAOLANGDI DAMDAM
SOLETANCHEBACHY DAMSPage 2
CHINAXIAOLANGDI DAM
General Presentation
New StructureNew Structure
LOCATION : CHINA - Henan Province
SOLETANCHEBACHY DAMSPage 3
New StructureNew Structure CHINAXIAOLANGDI DAM
General PresentationINTRODUCTION :
- Yellow River and Hydroelectric Power Development Corporation = Responsible
- Canadian International Project Managers = Consultant
- Financed by World Bank
- 3 lots :Lot 1 : Main Dam and its foudations ( Impregilo, Hochtief, Bureau 14 )Lot 2 : Intake, spillway and diversion structures (Züblin/Spie/Bureaux7,11)Lot 3 = Power facilities ( Dumez/Holtzman/Bureau6 )
SOLETANCHEBACHY DAMSPage 4
New StructureNew Structure CHINAXIAOLANGDI DAM
General PresentationPROJECT FUNCTIONS :
- Hydropower Generation
- Flood protection for Yellow River basin
- Reduction of loess deposit
- Supply of irrigation
SOLETANCHEBACHY DAMSPage 5
New StructureNew Structure CHINAXIAOLANGDI DAM
General PresentationPROJECT FEATURES :
- 154 m high zoned earth and rockfill damwith a crest length of 1700m
- Tunnels for river diversion and floodcontrol and erection of the intake and outlet structures (including a plunge pool and stilling basin )
- Construction of the underground powerstation with associated tunnels
SOLETANCHEBACHY DAMSPage 6
New StructureNew Structure CHINAXIAOLANGDI DAM
General Presentation
Power House
Free flow tailrace tunnels
DS Cofferdam
Intake structure
Free flow orifice and sediment tunnels
Power tunnels
SOLETANCHEBACHY DAMSPage 7
New StructureNew Structure CHINAXIAOLANGDI DAM
General Presentation
INTAKE STRUCTURE :
L = 281m / Th = 60m / H = 108m16 tunnels :
- 3 diversion tunnels- 3 sediment tunnels- 3 x 2 Power tunnels- 3 Free flow tunnels- 1 irrigation tunnel
SOLETANCHEBACHY DAMSPage 8
New StructureNew Structure CHINAXIAOLANGDI DAM
General PresentationMAIN DAM :
SOLETANCHEBACHY DAMSPage 9
New StructureNew Structure CHINAXIAOLANGDI DAM
General PresentationFOUNDATION WORKS :
- Curtain Grouting Right Bank- Curtain Grouting Left Bank ( scaffolding - slope of 50° )- Diaphragm wall in the riverbed ( 70m deep )- Consolidation grouting below the dam- Curtain Jet - Grouting below the upstream cofferdam ( 10 500 m2 )
SOLETANCHEBACHY DAMSPage 10
New StructureNew Structure CHINAXIAOLANGDI DAM
General Presentation
Grouting :120 000 lm of grouting holesDownstage MethodFault ZoneStable Mix ( W / c = 0.67 )
Drilling for Instrumentation :Critical pathInclinometers, piezometers,standpipes
SOLETANCHEBACHY DAMSPage 11
New StructureNew Structure CHINAXIAOLANGDI DAM
General Presentation
SOLETANCHEBACHY DAMSPage 12
New StructureNew Structure CHINAXIAOLANGDI DAM
General Presentation
SOLETANCHEBACHY DAMSPage 13
New StructureNew Structure CHINAXIAOLANGDI DAM
General Presentation
SOLETANCHEBACHY DAMSPage 14
New StructureNew Structure CHINAXIAOLANGDI DAM
General Presentation
SOLETANCHEBACHY DAMSPage 15
New StructureNew Structure CHINAXIAOLANGDI DAM
General Presentation
SOLETANCHEBACHY DAMSPage 16
New StructureNew Structure CHINAXIAOLANGDI DAM
General Presentation
SOLETANCHEBACHY DAMSPage 17
New StructureNew Structure CHINAXIAOLANGDI DAM
General Presentation
SOLETANCHEBACHY DAMSPage 18
China-Xiao Lang Di Dam–Concrete wall, Jet - grouting, Grouting,Instrumentation
New StructureNew Structure
SOLETANCHEBACHY DAMSPage 19
New StructureNew Structure CHINAXIAOLANGDI DAM
General Presentation
SOLETANCHEBACHY DAMSPage 20
New StructureNew Structure CHINAXIAOLANGDI DAM
General Presentation
SOLETANCHEBACHY DAMSPage 21
New StructureNew Structure CHINAXIAOLANGDI DAM
General PresentationContact with the rock
SOLETANCHEBACHY DAMSPage 22
New StructureNew Structure CHINAXIAOLANGDI DAM
General Presentation
SOLETANCHEBACHY DAMSPage 23
New StructureNew Structure CHINAXIAOLANGDI DAM
General PresentationJoints
SOLETANCHEBACHY DAMSPage 24
New StructureNew Structure CHINAXIAOLANGDI DAM
General Presentation
SOLETANCHEBACHY DAMSPage 25
New StructureNew Structure CHINAXIAOLANGDI DAM
General Presentation« Chinese » Joints
SOLETANCHEBACHY DAMSPage 26
New StructureNew Structure CHINAXIAOLANGDI DAM
General Presentation
- Upstream Cofferdam- Left Bank sand pocket- Tiger MouthRepairing of the panel N°1
Jet - Grouting : - difficult ground conditions- Specs of 0.5% of deviation
SOLETANCHEBACHY DAMSPage 27
New StructureNew Structure CHINAXIAOLANGDI DAM
General Presentation
SOLETANCHEBACHY DAMSPage 28
New StructureNew Structure CHINAXIAOLANGDI DAM
General Presentation