Directional Boring, also called horizontal directional drilling or HDD is a method of installing underground pipe, steel casing, conduit or cable on a preferred bore path by using steerable trenchless method from a Horizontal Directional Drill located on the surface. It is used when trenching or excavating is not feasible. Basically, any infrastructure can be installed with this trenchless technology to avoid civil disturbance, and it is the favored method to install underground utilities and piping beneath roadways, sidewalks, waterways, and other well-trafficked areas.
Directional Boring, also called horizontal directional drilling or HDD is a method of installing underground pipe, steel casing, conduit or cable on a preferred bore path by using steerable trenchless method from a Horizontal Directional Drill located on the surface. It is used when trenching or excavating is not feasible. Basically, any infrastructure can be installed with this trenchless technology to avoid civil disturbance, and it is the favored method to install underground utilities and piping beneath roadways, sidewalks, waterways, and other well-trafficked areas.
Materials HDD Can Install
Horizontal Directional Drilling can be used to install a wide range of materials, including but not limited to:
- High Density Polyethylene Piping(HDPE)
- Underground Inner Duct
- Polypropylene Piping
- PVC Piping
- Coax Cable
- Power Cable Conduits
- Gas Pipeline
- Water Lines
- Oil Lines
- Product Pipelines
- Fiber optic Cable and Inner Ducting
- Drainage Lines
- Telecommunications
- Environmental Remediation Casings
How It Works
THE PLANNING PHASE
THE INSTALLATION PHASE
Drilling fluid (typically bentonite and water or polymer and water) helps throughout the entire process to remove spoils ans stabilize the bore hole. A locater uses device in which he walks over the surface using a hand-held locater known as a walk-over locating system. A sonde is inserted behind the bore head on the drill stem, which registers the location, depth, temperature and angle of the drill head. The hand-held locater is able to achieve a successful bore path and avoid damaging existing utilities with this method. There are other locating methods used for larger projects such as wire-lining and gyro-based systems. Most commonly used is the hand-held however, different site conditions and project parameters require certain types to be used.
The Advantages of Horizontal Directional Boring
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