Longtan (Stage 1)
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Longtan (Stage 1) completed
Particulars
Owner: unknown
Designer: Mid-South Design Institute for Hydroelectric Projects, MOE & MWR
Contractor: JV of 7th, 8th and Gezhouba Construction Bureaux (Right Bank) and Jiangnan Co. Ltd. (Left Bank)
Statistics
Type: Gravity
Purpose(s): Flood Control / Hydropower / Navigation / Water Supply
Reservoir capacity: 16210 m3x106
Height: 192 metres
Length: 832 metres
Volume of RCC: 4623 m3x103
Total volume: 7400 m3x103
Construction Dates
Start of Project: 07/01 (July 2001)
Start of RCC: 10/04 (October 2004)
End of RCC: 06/07 (June 2007)
End of Project: 12/09 (December 2009)
Country: China
River: Hongshui
DMS Co-ordinates: 25˚01'41.99"N, 107˚02'36.40"E
DD Co-ordinates: 25.028332, 107.043442
Facings
Upstream
| Slope | Type |
|---|---|
| Vertical | RCC against formwork (GEVR/GE-RCC) |
| 0.25 |
Downstream
| Slope | Type |
|---|---|
| 0.70 | RCC against formwork (GEVR/GE-RCC) |
Spillway
| Slope | Type |
|---|---|
| 0.68 | Reinforced conventional concrete cast after RCC placement |
Placement
| Layers (mm) | Lifts (mm) |
|---|---|
| 300 | 300 |
Cementitious material
| Cement (kg/m3) |
|---|
| 99 |
| 86 |
| Pozzolan (kg/m3) | Pozzolan Type |
|---|---|
| 121 | Low-lime flyash (ASTM Class F) |
| 109 |
