Tan Chi Pumping Station

Project location: Duong River in Bac Ninh province

Construction time: 2001

Project managers:Le Van Ngo - Phung Van Luyen - Phan Vinh Khanh

Project tasks: Draining an area of 6420 ha surrounded by Con Tieu stream, South Trinh Xa canal, Hanoi-Lang Son railway and Duong riverdike.

Major technical parameters:

Drainage area : 5 km²

Workgrade : III

Rainfall frequency : p=10%

Drainage regime: 5-day rainfall 7-day drainage

Drainage coefficient : q=4.85 l/s/ha

Discharge Q = 31.10 m³/s

Design water level at suction sump during draining : +2.00m

Minimum water level at suction sump during draining : +1.70m

Maximum water level at suction sump during draining: +3.29m

Minimum water level at discharge basin : +5.80 m

Topographic head = 8.20 m

Design head = 9.00 m

Scale and structure of main works:

Headworks:

Repairing existing pumping station: replacing 46 old pumps with 22 horizontal axis pumps type 12-LTX800-9, replacing 46 out-of-order pumps with 900z/h horizontal axis pumps type HL900-9.

New pumping station:

Q=16m³/swith 4 imported pumps

+Station house: open type, length of the house: 26.45; 4 pump rooms, 01 assembly room, 01 electric room.

+ Suction room: elevation: (-2.25)

+ Pump and assembly rooms: floor elevation (+4.50)

+ Electric room:

+ Suction sump and inlet of suction room: basin length: 62m, width: 50m.

+ Discharge basin: a separated one, basin length: 4.50m, width: 17.65m.

+ Area of the station: (10m x 16m)

+ Dyke crossing culvert: dimension: 2.5 x 2.5m. Bottom elevation (+5.20).

+ Canal system connecting to the suction sump