Before we jump into the factors that are considered for dewatering, we have to understand what exactly Dewatering means.
Dewatering is the process of draining an excavated area that is flooded with rainwater or groundwater before construction to lower the water level so that construction can start. This process is usually applied when there is an accumulation of groundwater at a construction site where Sewer lines have to be laid or evacuation for Bridges foundations and basement has to be carried out.
Now there are different types of Dewatering for different sites of constructions using different methods.
Things Consider for Dewatering are:
1. Understanding the type of land
This is the first step in this process because different land have different soil properties, so it is important to study like what type of ground are we work on or what type of soil is this and then make a proper plan about how things are done
2. Check signs of soil erosion or the instability
Instability or Erosion is one of the biggest problems in large construction projects. Controlling erosion is important not just for preserving the construction site and protecting the new structure but also protecting the workers, laborers, machinery, and environment
3. Choosing the right Technique or Method
Choosing the right method. Since there are different types of Dewatering for Different types of Constructions, it becomes very important to select a suitable method for the respective Site. PRD Rigs provide Effective drilling solutions. We are backed by an extensive service network in 10 locations over the globe.
4. Understanding the weather conditions
It is very important to consider weather conditions when you are performing excavation process You should avoid dewatering under heavy rains because the infiltration rate is at a minimum and water will move slower or just the dewatering process will not function.
5. Choosing the right dewatering pump
Applications for dewatering pumps vary from clearing floodwater or draining reservoirs to sewage bypass or groundwater dewatering. So, when building a pump portfolio, it’s essential to choose equipment that is versatile, productive, safe and trouble-free. PRD Rigs is a leading global player in providing the best drilling and dewatering equipment.
6. Understand the water table conditions of the ground
It is important to understand the water table conditions in the area, perhaps the underground water is always near the surface, so your plan might not work, therefore it is better to make a better plan according to the water table
7. Discharge of Water
Never discharge water that has been contaminated with oil, grease, or chemical products directly this can cause serious injury to the workers. In such instances, an oil/water separator may be necessary.
8. Sump pumps
Sump pumps are the most common dewatering technique but can handle only a small volume of water use different techniques for large amounts of water.
9. Using Dewatering Bags
Dewatering bags are made of Synthetic Fiber (Geotextile Fiber) that filter the water by removing sediments and rocks from the water they’re placed on high water table area that is near to the shoreline
10. Check for Permission or Permit
Check if additional permits and requirements might be needed from the state or local government agencies for a smoothly working environment without any hindrance
Methods of Dewatering
4 important types of Dewatering Methods are as follows:
- Open sump pumping method
- Deep wellpoint method
- Wellpoint method of Dewatering method
- Eductor Wells method
Some other major techniques are
- Artificial Recharge
- Relief Wells
- Siphon Drains
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We house two state-of-the-art manufacturing facilities and we are backed by an extensive service network. Our company employs more than 500 trained employees and our manufacturing units totally span 55,000 sq.meters, with a plan for expanding more.
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