Directional boring, also referred to as Horizontal Directional Drilling (HDD), is a minimal impact trenchless method of installing underground utilities such as pipe, conduit, or cables in a relatively shallow arc or radius along a prescribed underground path using a surface-launched drilling rig. Directional Boring/HDD offers significant environmental advantages over traditional cut and cover pipeline/utility installations. The technique is routinely used when conventional trenching or excavating is not practical or when minimal surface disturbance is required.
HDD is suitable for a variety of soil conditions including clay, silt, sand, and rock. Problematic soil conditions include large grain content in the form of coarse gravel, cobbles, and boulders. Other subsurface conditions which can impact the feasibility of Directional Boring/HDD include excessive rock strength and abrasivity, poor rock quality, and rock exhibiting karst features. To combat this, we use only the latest environmentally approved bore additives to ensure we can install customer conduit according to standards.
Hydro excavation equipment needs a vacuum source and there are two choices for this, a fan system, or a positive displacement blower. Superior Underground only uses the fan system for all jobs requiring excavation. A fan system can move air in huge amounts and allows for faster excavations while providing the operators an easier method to control and operate. In addition, it is lighter and less expensive than the positive displacement blowers. This system cuts through the soil and breaks it up while the vacuum then lifts the slurry from the excavation area and transfers it to a debris tank.
Underground facilities and subsurface utilities are almost always needed for construction. Excavation to lay these utilities is not an easy job and has a lot of risks. The existence of hydro excavation has considerably lessened these risks and it can now be used for several excavation applications.
Hydro excavation is used for line, sign and pole installation and location. It is also used for potholing or daylighting. It allows for less congestion and traffic in the excavation area because the equipment can be positioned at a distance.