WJ - Wellpoint Dewatering Wystems

Wellpoint dewatering systems are used to lower groundwater levels and improve working conditions in shallow excavations, typically less than 6m in depth. For deeper excavations a number of strategies, such as staged and multi-tier wellpoint systems can be utilised. Wellpoint systems consist of a series of small diameter wells, installed by water jetting, augering or rotary drilling techniques, connected by a header pipe connected to a centrally located suction pump. Groundwater is abstracted via the wellpoints from a vacuum generated by the pump. A wellpoint is capable of drawing water from the ground up to a depth of 6m and is idea for shallow excavations, basements, pipelines, confined spaces, underpasses and tunnel excavations.