DEWATERING FOR DEEP WELLS

A deep well typically consists of a borehole fitted with a slotted liner and an electric submersible pump. As water is pumped from a deep well, a hydraulic gradient is formed and water flows into the well forming a cone of depression around the well in which there is little or no water remaining in the pore spaces of the surrounding soil.

Deep wells can be installed in a ring around an excavation to lower the water level and maintain a safe, dry site.

Practice, Experience and a clear understanding of the principles of dewatering. These are the best tools for designing a successful Dewatering system. VSN Dewatering always rely on these tools thereby providing cost-effective solutions for customers.

We offer cost-effective and reliable Dewatering system for Deep Wells.

Kindly CONTACT US for more details.

DEWATERING WELLPOINTS

Wellpoints are small-diameter (about 50 mm) tubes with slots near the bottom that are inserted into the ground from which water is drawn by a vacuum generated by a dewatering pump. Wellpoints are typically installed at close centers in a line along or around the edge of an excavation. As a vacuum is limited to 0 bar, the height to which water can be drawn is limited to about 6 meters (in practice).

Wellpoints can be installed in stages, with the first reducing the water level by up to five meters, and a second stage, installed at a lower level, lowering it further. The water trickling between the deep wells may be collected by a single row of well point at the toe. This method ensures a much thicker width free from seepage forces.

 

Dewatering is a very specialised process and it involves various machineries & materials which include :

1. Slow rig Machine Diesel / Electricity operated.

2.160mm PVC pipe 6kg/cm2 with Perforations.

3. Header pvc pipe 52mm is connected to intermediatory 35mm
upvc pipes with Non-return Valves.

4. 1.0 HP submersible pump with auto level controller.

5. Relaxo submersible cable with 2.5Sq mm cable.

6. 4Core  sunrich multicore sheathed cable.

7. 12mm & downsize aggregate
We offer cost-effective and reliable Dewatering system for Wellpoints.

Kindly CONTACT US for more details.