Ohmatsugawa
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Ohmatsugawa completed
Particulars
Owner: unknown
Designer: Akita-ken
Contractor: Nishimatsu Construction Co Ltd and Okamura Construction Co Ltd J.V.
Statistics
Type: Gravity
Purpose(s): Flood Control / Hydropower / Water Supply
Reservoir capacity: 12 m3x106
Height: 65 metres
Length: 296 metres
Volume of RCC: 141 m3x103
Total volume: 294 m3x103
Construction Dates
Start of Project: 07/90 (July 1990)
Start of RCC: 10/92 (October 1992)
End of RCC: 06/95 (June 1995)
End of Project: 09/96 (September 1996)
Country: Japan
River: Matsu
DMS Co-ordinates: 39˚18'29.1"N, 140˚38'43.95"E
DD Co-ordinates: 39.308083, 140.645538
Facings
Upstream
| Slope | Type |
|---|---|
| Vertical | Traditional concrete against formwork |
| 0.70 | Traditional concrete against formwork |
Downstream
| Slope | Type |
|---|---|
| 0.76 | Traditional concrete against formwork |
Spillway
| Slope | Type |
|---|---|
| 0.76 | Traditional concrete against formwork |
Placement
| Layers (mm) | Lifts (mm) |
|---|---|
| 250 | 750 |
Cementitious material
| Cement (kg/m3) |
|---|
| 91 |
| Pozzolan (kg/m3) | Pozzolan Type |
|---|---|
| 39 | Low-lime flyash (ASTM Class F) |
