Jacking of roof section, Pascua-Lama, Chile and Argentina border
ALE has completed the jacking of roof sections for the stockpile building in the Pascua-Lama mine at the Chilean Argentina border.
Services required: The stockpile roof was located at 4,200 metres altitude, making the environmental conditions extremely harsh and challenging. As a result, all of the girders were pre-assembled into 40te heavy truss sections near San Juan at normal altitude.
A hydraulic skidding system was used to support and move the side girders inwards. As an extra precaution against the extremely strong wind, eight 200t strand jacks were installed cross wise at each side of the stockpile building.
The jack up operation, which consisted of 22 layers of beams, was completed in less than six hours.