Drilled shafts are high-capacity deep foundation systems, also known as drilled piers, caissons, bored piles, or cast-in-drilled-hole piles (CIDH). Drilled shafts for structural support can be installed by the dry (open hole), stabilizing polymer slurry, or steel-cased methods.
[pdf] A jet grouting machine, also called a jet grouting drilling rig, is an advanced tool for foundation reinforcement. It injects high-pressure cement slurry into the ground while rotating and lifting. This process mixes the soil and slurry to form solid columns.
[pdf] 
