In appropriate ground conditions a wellpoint system can be installed speedily and made operational rapidly.
Well point dewatering procedure.
Well points are prepared at a distance of about 1m around the area to be excavated.
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.
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.
The following procedure is adopted in the well point.
Wellpoint dewatering is widely used for excavations of shallow depths especially for pipeline trench excavations.
The ground water table is influenced by means of drawing it down through the well points spears that are installed around the excavation area.
Wellpoint dewatering also known as spear point is an effective dewatering technique.