A multi-facetted grouting operation included curtain grouting below dams, rock anchors and tunnel grouting operations to facilitate the construction of a hydro project.
A double row grout curtain was constructed around the perimeter of 2 large diameter (100 plus ft) caisson shafts using acrylamide and cement based suspension grout to stabilize and control the water inflow prior to sinking the shaft through the soil and rock formations.
A continuous 265 feet high, vertical grout curtain was installed from the underground donut tunnel around a shaft at a depth of 2,760 ft, under high hydrostatic pressures (400 to 1200 psi) using acrylamide based grout.
An old rubble wall foundation was stabilised to save century old masonry façade to facilitate the construction of a new multiple story building.
A grouting methodology was designed by to remedy seepage through the 3rd highest dam in the USA.
ECO directed and designed a pre-excavation grouting program, monitored in real time, to facilitate the construction of a 2m diameter tunnel. The tunneling contractors crews were trained by ECO personnel and grouted the loose shot rock below a major highway.