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Dodairagawa

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Dodairagawa completed
Dodairagawa completed

Particulars

Owner: Gunma Prefecture

Designer: Gunma-ken

Contractor: Kumagi-Gumi Co Ltd., Kajima Co Ltd, Shimizu Construction Co Ltd., and Sada Construction Co Ltd. (J.V.)

Statistics

Type: Gravity

Purpose(s): Flood Control / Water Supply

Reservoir capacity: 5 m3x106

Height: 70 metres

Length: 300 metres

Volume of RCC: 167 m3x103

Total volume: 350 m3x103

Construction Dates

Start of Project: 03/86 (March 1986)

Start of RCC: 06/88 (June 1988)

End of RCC: 01/90 (January 1990)

End of Project: 03/92 (March 1992)

Country: Japan

River: Kabura

DMS Co-ordinates: 35˚14'6.34"N, 138˚40'41.44"E

DD Co-ordinates: 35.235092, 138.678177

Facings

Upstream

SlopeType
VerticalTraditional concrete against formwork
0.40Traditional concrete against formwork

Downstream

SlopeType
0.75Traditional concrete against formwork

Spillway

SlopeType
0.75Traditional concrete against formwork

Placement

Layers (mm)Lifts (mm)
180500

Cementitious material

Cement (kg/m3)
96
Pozzolan (kg/m3)Pozzolan Type
24Low-lime flyash (ASTM Class F)