Kenh Vang Pumping Station

Project location: On right bank of Red river in Kenh Vang village, Trung Kien commune, Gia Luong district, Bac Ninh province.

Construction time: Commencement in 4/1985

Project managers:

Vu Cong Khanh

Le Van Ngo

Duong Ngo Cuu

Project tasks: Draining 10.660 ha in Gia Luong, Ha Bac

Major technical parameters:

- Work grade:

- Design water level in suction sump: +0.5

- Design water level in discharge basin: +6.24

- Drainage discharge with P=10%; Q=42.3m³/s

- Drainage coefficient: q=4l/s/ha

- Number of pumps: 20 pumps, type 30-HTD-90, Q=8000 m³/h.

Scale and structure of project works:

Powerhouse:

The powerhouse is constructed of reinforced concrete, arranged in curve shape with curve radius to center of units of 60m. Foundation is treated with reinforced concrete piles with maximum length of 16m.

- Average length: L=66.8m

- Elevation of propeller: 1.34m

- Elevation of motor floor: +3.97m

- Elevation of pump floor: 0.70m

- Elevation of suction sump bottom: -3.00m

Discharge basin:

Pier is constructed of rock masonry with reinforced concrete trough, foundation is treated with sand layer with maximum thickness of 1.7m.

· Crest elevation: +7.50m

· Average length: 70m

· Width: 10m

· Design water level: 6.25m

Dike crossing culvert:

· Construction of reinforced concrete, 3 gates (3x3x3.5m)

· Discharge: Q=44m³/s

· Culvert bottom elevation: +2.00 m

· Elevation of stilling basin bottom: -1.00m

· Length of stilling basin apron: L=11.5m

Canal connecting to suction sump:

· Maximum discharge: Q=44m³/s

· Canal bottom width: b=3m

· Canal slope ratio: m=2.0m

Aqueduct on south canal:

Length: 60m, bxh=0.80 x 1.0 m; design discharge Q = 0.62 m³/s