Auger boring
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Auger boring
Auger boring is probably one of the oldest horizontal drilling methods for installing steel pipes under an obstacle. Very popular drilling method when soil conditions are favorable, that is to say a homogeneous soil consisting of sand and/or silt and clay. This method also allows gravity drilling and the diameter of the pipes that be installed varies from 400mm to 1350mm.
Here are the different steps for this type of drilling:
- Following the excavation of an 18 m long x 3.5 m wide entrance pit 200mm below the invert, a system of guide rails is installed in the desired alignment at one end of the crossing. These rails will support the pipe to be driven and the drilling equipment which is located behind the pipe.
- After having reinforced the front part of the pipe, it is pushed by the combined effect of the mechanical thrust and the augers used to evacuate the material.
- Once the first section of the pipe is driven in, the drilling equipment retracted to the back of the guide rails. A second pipe section is then positioned behind the first and is welded along the full thickness of the pipe wall (complete penetration).
- Drilling resumes and the same process continues until the crossing is completed.
| Applications | Products |
|---|---|
| Watermain - Sewer | Steel |
| Pipeline | |
| Telecommunications |
Here are some of our achievements in auger boring:
| Year | City | No. of drillings | Length (m) | Type of pipe | Type of soil | Obstacle |
|---|---|---|---|---|---|---|
| 2015 | Farnham | 1 | 30 | Steel 900mm | Soft soil | Railway |
| 2016 | Cowansville | 2 | 30 ea. | Steel 750mm | Soft soil | Culverts |
| 2017 | Ottawa | 1 | 35 | Steel 900mm | Soft soil | Route 174 |
| 2018 | Brossard | 1 | 40 | Steel 900mm | Soft soil | Railway |
| 2019 | Trois-Rivières | 1 | 36 | Steel 400mm | Soft soil | Road |
| 2020 | Montréal-Est | 1 | 40 | Steel 400mm | Soft soil | Railway |