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Longmentan Nº1

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Longmentan Nº1 completed
Longmentan Nº1 completed

Particulars

Owner: Dehua County, Fujian Province

Designer: Fujian Institute of Investigation and Design of Water Conservancy and Hydropower

Contractor: Fujian (Minjiang) Construction Bureau

Statistics

Type: Gravity

Purpose(s): Hydropower / Irrigation / Water Supply

Reservoir capacity: 53 m3x106

Height: 58 metres

Length: 150 metres

Volume of RCC: 71 m3x103

Total volume: 93 m3x103

Construction Dates

Start of Project: 12/85 (December 1985)

Start of RCC: 12/87 (December 1987)

End of RCC: 08/89 (August 1989)

End of Project: 09/89 (September 1989)

Country: China

River: Chanxi

DMS Co-ordinates: 25˚29'32.65"N, 118˚21'17.91"E

DD Co-ordinates: 25.492403, 118.354973

Facings

Upstream

SlopeType
VerticalReinforced conventional concrete cast after RCC placement
0.30Reinforced conventional concrete cast after RCC placement

Downstream

SlopeType
0.75RCC against precast concrete blocks

Spillway

SlopeType
0.75Reinforced concrete cast against precast units or slip-formed facing elements

Placement

Layers (mm)Lifts (mm)
300300

Cementitious material

Cement (kg/m3)
72
54
Pozzolan (kg/m3)Pozzolan Type
82Low-lime flyash (ASTM Class F)
86