Man accessible, leaking concrete sewer joints, located below the water table beneath a roadway triggered an internal soil erosion process resulting in the formation of major sinkholes that posed danger to local traffic. An immediate remedy was necessary to restore safety to the public and provide extended life to the sewer system
The underwater portion of the Detroit River Car Tunnel was continually plagued by water infiltration problems, causing extensive damage and deterioration to the structure. The multi-year restoration program, resulted in the near elimination of the infiltration, entailing multiple injection phases.
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.
An old rubble wall foundation was stabilised to save century old masonry façade to facilitate the construction of a new multiple story building.
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.