Learn About Hydrovac Excavation

This Fast, Reliable Process is Used to Excavate in Congested Areas

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Photo ColumbuscameraOp Flickr

We are used to digging and excavate using traditional methods but sometimes it is so hard to dig a trench when there are buried pipes/conduits in the area over which we are working. Well, there are other ways to excavate that can save us money but most important headaches. The Hydrovac Excavation process is a non-destructive digging process that consists of injecting pressurized water and a vacuum system to dig out soil leaving a trench completely open.

How the Hydrovac Process Works

Hydrovac works by injecting water into the ground through a ‘hose’ liquefying the soil. When the soil becomes a slurry mix, it is then vacuumed using a powerful pumping system and storing the wet soil mix into a truck. The process can be used to dig up to 70 feet deep in some cases and at really long distances from the holding tank or where the pumping truck is located. The excavation process can be used almost in any soil type even in frozen ground.

The hydrovac process can be completed using two different choices: using a fan system or a positive displacement blower. A fan system is able to move air in huge amounts. This allows for faster excavations. It is easier to control and operate. This is often lighter and less expensive than the positive displacement blowers

Benefits of Hydrovac

The Hydrovac process can solve many problems and provides a safer way to dig and complete excavations.

It offers a system that minimizes disruptions and damages to existing infrastructure. In addition, you can also receive the following benefits:

  • Provides a safe way to complete excavations without the needs of having a worker inside the trench controlling the excavation equipment.
  • Protects existing infrastructure through a controlled way of excavating
  • Hydrovac ensures that surrounding soil is not disturbed reducing the cave-in fatalities.
  • The excavation process is faster when compared to traditional excavation process.
  • Hydro excavation only involves water and an air vacuum minimizing the needs for additional equipment
  • The equipment for hydrovac can be located far from the actual location being worked reducing congestion in the work area
  • Minimizes damages to pipes and existing infrastructure

Hydrovac Applications

The hydrovac process can be used as part of the following applications:

  • Slot trenching – Narrow trenches can easily be completed using the process disturbing less soil than traditional methods. This method is ideal to locate utilities or when small diameters pipes are to be installed.
  • Debris Removal – It can be used to remove debris and clean areas without affecting existing infrastructure. It can be used to clean drainage structures and manholes.
  • Potholing – The best way to expose underground utilities without damaging them. It is a cost-effective solution to excavate in a congested area.
  • Excavate in Tight Spaces – Working in tight spaces, narrow streets, planting strips, or in backyards with limited spaces, the hydrovac process is one of the best alternatives to consider.
  • Cold Weather Excavation – During freezing conditions, the controlled excavation method is the safest way to dig without exposing workers to really low temperatures.
  • Pole Setting – Hydrovac can facilitate work related to pole drilling or excavation. Because the excavation is a controlled and centralized process, it will lead you to have the eight excavation that can accommodate a pole.