Water is released at the rate of 20 to 25 liters per second at these well points which causes the soil to be dug and the well point to sink deeper into the ground.
Well point dewatering procedure.
Wellpoint dewatering is widely used for excavations of shallow depths especially for pipeline trench excavations.
Wellpoint dewatering also known as spear point is an effective dewatering technique.
In appropriate ground conditions a wellpoint system can be installed speedily and made operational rapidly.
The wells are arranged either in a line or a rectangular form where the wellpoints are created at a distance of at least 2m from each other.
The ground water table is influenced by means of drawing it down through the well points spears that are installed around the excavation area.
A typical wellpoint system consists of a series of small diameters wells known as wellpoints connected via a header pipe.
The following procedure is adopted in the well point.