An ambitious project to bore a tunnel through the Continental Divide in the Andes of northern Peru has stalled after a powerful rock-burst severely damaged the tunnel-boring machine drilling the underground passage. Los Olmos tunnel workers dig out TBM damaged by shifting rock in April. Related Links: Odebrecht Pushes forward With Next Phase of Peruvian Irrigation Project On April 29, a large rock-burst struck the $14-million, 5-meter-dia, unshielded Robbins gripper TBM, damaging a cylinder connecting one of the grippers to the machine. Two workers suffered minor injuries when the operating cabin was partially crushed around them. Officials with Odebrecht Perú
The market is generally healthy and steadily growing, and margins are up for large specialty contractors. Further, advances in design tools and owner demand for collaboration are giving subcontractors a seat at the table early on in projects.