An industrial tramway manufacturer required two tower foundations for a new tramway in rugged mountain terrain. Traditional construction equipment could not reach the tower locations. GSI® rock technicians drew up a plan to install a series of high-capacity drilled SuperMicropiles™ high in the peaks. Crews and purpose-built limited access drill rigs were mobilized using helicopters, and the innovative approach resulted in minimal site disturbance.
A variation of karst sinkhole grouting is the grouting of mined coal seams and workings located below existing infrastructure that exhibit the potential to propagate to the surface and cause sinkholes and/or subsidence.