xiaolangdi - · pdf file- hydropower generation ... grouting below the upstream cofferdam ......
TRANSCRIPT
![Page 1: Xiaolangdi - · PDF file- Hydropower Generation ... Grouting below the upstream cofferdam ... XIAOLANGDI DAM General Presentation Grouting : 120 000 lm of grouting holes](https://reader034.vdocument.in/reader034/viewer/2022051508/5a8d45e47f8b9a085a8cb0a0/html5/thumbnails/1.jpg)
SOLETANCHEBACHY DAMSPage 1
XIAOLANGDIXIAOLANGDI DAMDAM
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SOLETANCHEBACHY DAMSPage 2
CHINAXIAOLANGDI DAM
General Presentation
New StructureNew Structure
LOCATION : CHINA - Henan Province
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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 )
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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
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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
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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
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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
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SOLETANCHEBACHY DAMSPage 8
New StructureNew Structure CHINAXIAOLANGDI DAM
General PresentationMAIN DAM :
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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 )
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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
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SOLETANCHEBACHY DAMSPage 11
New StructureNew Structure CHINAXIAOLANGDI DAM
General Presentation
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SOLETANCHEBACHY DAMSPage 12
New StructureNew Structure CHINAXIAOLANGDI DAM
General Presentation
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SOLETANCHEBACHY DAMSPage 13
New StructureNew Structure CHINAXIAOLANGDI DAM
General Presentation
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SOLETANCHEBACHY DAMSPage 14
New StructureNew Structure CHINAXIAOLANGDI DAM
General Presentation
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SOLETANCHEBACHY DAMSPage 15
New StructureNew Structure CHINAXIAOLANGDI DAM
General Presentation
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SOLETANCHEBACHY DAMSPage 16
New StructureNew Structure CHINAXIAOLANGDI DAM
General Presentation
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SOLETANCHEBACHY DAMSPage 17
New StructureNew Structure CHINAXIAOLANGDI DAM
General Presentation
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SOLETANCHEBACHY DAMSPage 18
China-Xiao Lang Di Dam–Concrete wall, Jet - grouting, Grouting,Instrumentation
New StructureNew Structure
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SOLETANCHEBACHY DAMSPage 19
New StructureNew Structure CHINAXIAOLANGDI DAM
General Presentation
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SOLETANCHEBACHY DAMSPage 20
New StructureNew Structure CHINAXIAOLANGDI DAM
General Presentation
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SOLETANCHEBACHY DAMSPage 21
New StructureNew Structure CHINAXIAOLANGDI DAM
General PresentationContact with the rock
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SOLETANCHEBACHY DAMSPage 22
New StructureNew Structure CHINAXIAOLANGDI DAM
General Presentation
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SOLETANCHEBACHY DAMSPage 23
New StructureNew Structure CHINAXIAOLANGDI DAM
General PresentationJoints
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SOLETANCHEBACHY DAMSPage 24
New StructureNew Structure CHINAXIAOLANGDI DAM
General Presentation
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SOLETANCHEBACHY DAMSPage 25
New StructureNew Structure CHINAXIAOLANGDI DAM
General Presentation« Chinese » Joints
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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
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SOLETANCHEBACHY DAMSPage 27
New StructureNew Structure CHINAXIAOLANGDI DAM
General Presentation
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SOLETANCHEBACHY DAMSPage 28
New StructureNew Structure CHINAXIAOLANGDI DAM
General Presentation