Jet grouting is a trenchless ground improvement method that utilizes high velocity grout injection to stabilize soil conditions within a project site. Sovereign’s jet grouting technology improves in-situ soil with a stabilizing grout mix, delivered through high velocity jets, to create soil-cement columns. Using a small diameter rod (3’’), the hole is drilled to the required target depth, then the rods are withdrawn using roto-translational motion. Soil is disaggregated (eroded) by the action of the extremely high speed grout jets through one or more lateral orifices at the bottom of the rods.
The result of the process is a full or partial soil-cement column with mechanical properties that vary based on the type of soil that is treated. Typical applications of this technology are excavation support, bottom plugs, cut-off walls, TBM break in/out, and foundation reinforcement and underpinning. Special applications include pre-consolidation of the outer excavation perimeter of tunnels using horizontal columns.
