ECO has designed and directed the construction of several mine plugs and permanent flood bulkheads. The plugs have been used to seal underground works after the ore has been depleted or to seal off areas of a mine where the water inflow impaired or threatened mining operations…
Hot bitumen injection, in conjunction with regular cement based suspension grouts, was employed to stop a major tailings flow, which peaked at approximately 7,000 l/sec (111,000 US GPM).
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.
Two 660 meter long concrete strip footings support three large gantry cranes at the CP Vaughn Intermodal Terminal. The existing steel bearing plates between the footings and crane rail created a point-loading situation leading to rapid extensive cracking, deterioration and settlement.
ECO designed and directed a multi-grout, multi-technique post/pre-excavation grouting program to facilitate two mine slopes through water bearing strata. The grouting operation was executed by ECO trained miners.