Definition - What does Hydrovac Excavation mean?
Hydrovac excavation uses a combination high-pressure water and industrial-strength vacuum system to create a trench or a bore. As the water jet cuts into the soil it creates a slurry that the vacuum system removes simultaneously. Because the water jet is precise in the vacuum action is simultaneous, disturbance to the adjacent soil is effectively nil. The process is suitable for trenchless projects in surface or subterranean spaces where spatial leeway is extremely limited or nonexistent.
Trenchlesspedia explains Hydrovac Excavation
Hydrovac excavation’s precise, controlled and simultaneous creative slurry/remove the slurry approach to trenchless construction makes this method of excavation ideal for creating very narrow trenches, mechanized potholing – it’s less likely than a tobacco or stubble to damage existing underground utilities – and for creating bores in tight areas where further soil compaction is not an option. It can cut a trench up to 70-feet deep or a precise bore at the same depth and because the water and vacuum systems use hoses to reach the work, the truck unit, which surmounted can be parked at a considerable distance from the project.