Two high velocity water flows (both in excess of 20,000 liter per minute) through fissured limestone beneath a concrete hydro dam, were successfully stopped with bitumen grouting techniques in hours.
A hot bitumen grouting plan was designed and directed to remedy a massive inflow under substantial hydrostatic pressure in a tunnel in Taiwan.
Publication:
A hot bitumen grouting operation to stabilise and stop an inflow of soil in a tunnel…
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).
ECO designed and supervised the construction of a grout curtain to stop an inflow in excess of 50,000 gpm…