Soil nail

Slope reinforcement
and stabilization

The Soil Nail slope strengthening process typically involves drilling a relatively slender injection boring rod and a drill bit into the slope. Grout is pumped through the rod and through the drill bit at a maximum of 300 psi. The drill bit has multiple grout ports and cuts into the soil formation as the drill bit is advanced into the soil. The drill bit also tends to "wobble" further over sizing the drill hole.

The end result of this single pass drilling and injection process is the construction of a soil nail consisting of a reinforced and treated soil mass. Because of the drill bit wobble and the jetting action, a highly irregular hole is created with numerous ridges and depressions along the shaft of the drill hole. In addition, the grout permeates into the surrounding soil matrix further strengthening the surrounding soil. The end result is a reinforced grout composite soil nail element surrounded by a soil cement matrix.

Soil nail heads are finally connected into the bearing plate or shotcrete facing.

Quick Reference

Soil nails

Micro piles