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Helong

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Particulars

Owner: Electricity Corporation, Yanji

Designer: Yanbian Investigation and Design Institute of Hydropower

Contractor: Helong Construction Bureau

Statistics

Type: Gravity

Purpose(s): Hydropower / Recreation / Water Supply

Reservoir capacity: 30 m3x106

Height: 30 metres

Length: 244 metres

Volume of RCC: 43 m3x103

Total volume: 89 m3x103

Construction Dates

Start of Project: 11/98 (November 1998)

Start of RCC: 08/99 (August 1999)

End of RCC: 01/02 (January 2002)

End of Project: 12/02 (December 2002)

Country: China

River: Hailanhe

DMS Co-ordinates: unknown

DD Co-ordinates: unknown

Facings

Upstream

SlopeType
VerticalTraditional concrete against formwork

Downstream

SlopeType
0.75RCC against precast concrete blocks

Spillway

SlopeType
ogeeRCC against precast concrete blocks  [stepped face]

Placement

Layers (mm)Lifts (mm)
3002000

Cementitious material

Cement (kg/m3)
113
Pozzolan (kg/m3)Pozzolan Type
113Low-lime flyash (ASTM Class F)