Bypassing a Watercourse
Bypassing a watercourse and drying the site to install channelling
Context
Project Type :
Pumping Solutions
Location :
Coudures (40)
Problem
- EIFFAGE undertook the installation of a gas pipeline which had to pass under the bed of the Lac du Gabas
- To do this, it was necessary to divert the watercourse over 100 metres for the duration of works, and lower the water table in the dry bed
Solution
Supply, installation, testing and commissioning of a pumping solution of 15 000 m³/h:
- 12 dewatering pumps of 1000 m³/h for bypassing a watercourse
- 3 pumps of 1000 m³/h at the bottom of the trench
- 4 leader lines of 170 metres of Ø 400 mm
- 3 generators of 500 kVA with back-up
- 3 tanks of fuel totalling 9 000 L
- Progressive start cabinets, distribution cabinets and mobile telephony remote monitoring cabinet
- Presence of a DSL engineer on site throughout the whole operation
- Remote monitoring and on-call service 24/7
- Duration: 20 days of operation
