Dewatering Works
Construction dewatering methods refer to techniques such as wellpoints, deep-wells, bypass and flood control. In wellpoint and deep-wells submersible pumps are installed in a drilled well shaft, while in bypass and flood control pumps are placed in the area that needs to be dewatered and implement with the most effective dewatering method which minimizes environmental damage, protects the health & safety of on-site personnel and meets all legislative discharge limits.
COMMON DEWATERING METHODS
Wellpoint System.
A series of small-diameter wells connected to a header pipe and vacuum pump, used for shallow excavations and sandy soils allowing the groundwater to be drawn up by the pumps into the Wellpoints and then discharged.
Deep Well Systems.
Submersible pumps installed in boreholes for deeper excavations and areas with highgroundwater inflow or large water volumes needto be discharged.
Flood control
Flood control refers to all methods used to reduce or prevent harmful effects of flooding during storm water and heavy rainfall. For construction works in tunneling or mine work site to be prepared for potential site flooding/flood mitigation, keeping pumps that can move high volumes of water against low head pressure. Also, on major impact at local communities when roads and houses get flooded. It is important that municipalities have good flood protection and are prepared to act quickly on these occasions.
Bypass Dewatering
When sewer lines need maintenance, the sewage flow is pumped around the damaged pipe section using dewatering pumps. The pumps are installed upstream of the maintained pipe section. Bypass technique is also common in irrigation and construction projects.
Tunneling dewatering
Tunnel constructions are complex worksites where many variables need to be taken into consideration. Significant volumes of water from the construction site need to be removed in order to stabilize the ground or prevent flooding of the work area. Tunnel boring machines and drilling equipment require a reliable supply of cooling water, which must be recovered, extracted and treated after use. Tunneling projects require many dewatering pumps on site, ranging from small submersible pumps to very large units for large volume dewatering applications.
Drainage Systems
Including trenches, filter drains, and horizontal wells to control surface and shallow subsurface water
TYPES OF CONSTRUCTION DEWATERING DISPOSAL OPTIONS AS WE FOLLOW
- Discharge to the Sea via surface and groundwater network.
By the licensing authority ASHGHAL and Ministry of Environment (MoE)
- Directly pumping out and discharge to the Sea.
By the licensing authority Ministry of Environment (MoE)
- Discharge to Lagoon totally covered with geotextile from all sides.
By the licensing authority from ASHGHAL and MoE.
- Discharge through Deep Well Injection.
By the licensing authority from MoE and Agencies.
Efficient Dewatering Solutions for Every Project
Keep your site dry, safe, and ready for construction with Neroserve’s professional dewatering services. Our expert team ensures fast, reliable, and cost-effective groundwater control for projects of any scale across Qatar.
