DEEP WELL POINTS
(Based on Marina Barrage Project experience)

 


Cofferdam layout for Drainage Pumping Station

 


Cofferdam layout for East Abutment

 


Install well points using piling rig and double casing method


D900mm and depth18m casing. Geotextle to wrap the inlet pipe.


4' well point


WELL POINT DEWATERING
(Extracted from Longville Catalogue)


Schematic view of a well point dewatering layout


Ground water is drawing out through a wellpoint by pumping


Working mechanism of a well point