ECO designed and directed a pre-excavation soil grouting program to stabilize the soils below the US23 artery prior to tunnelling. The tunneling crew was trained by ECO and the grouting operation was monitored in real time via CAGES…
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 designed and provided hands-on training to facilitate the construction of a concrete liner in a tunnel under sever flow conditions…