The International Society for Trenchless Technology
| Narrow Trench |
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Mole ploughing and narrow trenching are not trenchless technologies but they both create narrow temporary trenches for installing small diameter services that minimize the adverse impact associated with traditional underground construction methods requiring wide trenches. These two techniques use plows, cutter chains, or disc to open a furrow or narrow trench in which a flexible pipe or cable in inserted. Mole Ploughs or Cable Plows works best in easily displaceable soils that can be reused as fill. The mole plough pushes the spoils removed by the plow back into the hole as the machine feeds the new service into the hole eliminating the need for backfill. Narrow trenchers are capable of installing utilities in a variety of ground conditions from normal soils to paved surfaces depending on the cutter picks and chain/wheel system selected. Narrow trenches require back fill and may require restoration of surface to preconstruction conditions.
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Technologies
- Close-Fit Slip Lining
- Spiral Wound Lining PE or PVC
- CIPP Lining
- Woven Hose Lining Epoxy Bonded
- Pipe Splitting
- Cement mortar Liner
- Epoxy & Polyurethane Linings
- Polyurethane Lining
- Slip Lining
- Pipe Bursting
- Pipe Reaming
- Pipe Extraction
- Joint Grouting
- Localized Sealing
- Potholing for Local Repair
- Flood Grouting
- Horizontal Directional Drilling (HDD)
- Pilot Tube
- Pipe Jacking & Microtunneling
- Auger Boring
- Pipe Ramming
- Impact Moling
- Wide Trench
- Mole Ploughing
- EM Systems
- Vacuum Excavation Potholing
- Potholing
- CCTV
- Leak Detection
- Ground Pentrating Radar
by pavoneggi