Vue d'un puisard pour un épuisement de surface

Surface Dewatering

When the environment of the area of works permits, we set up a surface dewatering device, generally provided for a limited pumping flow rate

Surface dewatering is recommended for low permeability ground. It enables the capture of the water table water into trenches filled with drainage blankets connected to sumps.

Setting up this pumping technique will depend on several factors: geology, lowering height, adjoining structures and the overall environment of the site.

Schéma rabattement de nappe par épuisement de surface

KEY STAGES

EQUIPMENT

Analysis and design: particular specifications, contractors tendering file, breakdown of total price, declaration of intention to commence works, local authority inspection visit etc.
Setting up sumps
Creating a draining blanket and/or draining trenches
Installation of a submersible pump inside each sump
Installation of the dewatering network
Commissioning the pumps

Surface Dewatering 1

Surface Dewatering 2

Surface Dewatering 3

Our case studies

All case studies

Construction d'un immeuble de bureaux

Construction of an Office Block

Lowering the water table by bleeder wells during construction of an office building with 2 basement levels

Pompe à vide et pointes filtrantes alignées vue rapprochée

Lowering the Water Table in Sandy Ground

Lowering the water table in sandy ground to build a wastewater treatment plant, the wellpoint technique was used

Vue panoramique de 166 pointes filtrantes avec linéaires de collecteur d'aspiration et pompes à piston

Wellpoints for Holding Tank

Dewatering by wellpoints for the construction of a rainwater holding tank

2 techniciens Delta Service Location vue rapprochée