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Dachaoshan

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Dachaoshan completed
Dachaoshan completed

Particulars

Owner: Department of Electricity, Yunnan Province

Designer: Beijing Hydroelectric Investigation & Design Institute, MOE & MWR

Contractor: JV between 8th and 3rd Construction Bureaus, SPC (70% to 8th)

Statistics

Type: Gravity

Purpose(s): Flood Control / Hydropower

Reservoir capacity: 940 m3x106

Height: 115 metres

Length: 460 metres

Volume of RCC: 757 m3x103

Total volume: 1287 m3x103

Construction Dates

Start of Project: 10/97 (October 1997)

Start of RCC: 12/98 (December 1998)

End of RCC: 10/01 (October 2001)

End of Project: 07/02 (July 2002)

Country: China

River: Lancang

DMS Co-ordinates: 24˚01'28.77"N, 100˚22'10.69"E

DD Co-ordinates: 24.024658, 100.369637

Facings

Upstream

SlopeType
VerticalRCC against formwork (GEVR/GE-RCC)
0.20 

Downstream

SlopeType
0.70RCC against precast concrete blocks  [stepped face]

Spillway

SlopeType
0.70Reinforced concrete cast against precast units or slip-formed facing elements

Placement

Layers (mm)Lifts (mm)
300300

Cementitious material

Cement (kg/m3)
94
67
Pozzolan (kg/m3)Pozzolan Type
94Natural pozzolan (ASTM Class N)
101