wellpoint dewatering

wellpoint dewatering

What is the Wellpoint Dewatering?           

- Johnson screen
- Wellpoint dewatering
- Control the ground water
- Used on construction dewatering and mine dewatering project
- Temporarily lowering groundwater levels

★ The material will be SS304, 316 or 316L, also customized by your demand.


Wellpoint dewatering structure and working principle

Typically each wellpoint is approximately 6 m deep and about 30 to 50 mm in diameter (also sometimes used deeper and larger wellpoint). The horizontal spacing between wellpoints is usually between 1m or longer. The lower section of each wellpoint has a wedge wire filter and the top of each well is equipped with a soft connecting pipe. The soft pipe connects each wellpoint to the header pipe laid along the line of the wellpoints. A wellpoint pump is connected to the header pipe, it can pumping both air and water. The pump creates a partial vacuum in theheader pipe, which acts to draw water through the wellpoint screen (wedge wire filter), up the wellpoint riser, through the soft connecting pipe, along the header pipe and to the pump from where it is discharged. In this way a single wellpoint pump can act on many wellpoints simultaneously and can possibly lower groundwater levels over a wide area. 

Wellpoint dewatering's application

- A flexible and lower-cost way to lower groundwater level for the excavation
- Suitable for soils of moderate permeability (sands and sandy gravels)
- Reduced operation costs

Details please visit: https://www.zhfil.com/wedge-wire-filter/wellpoint-dewatering.html

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