DRILLER MIKE BREAKS THROUGH ON BELLWOOD TUNNEL

摘要

USA - The TBM excavating a new water supply tunnel in Atlanta, Georgia has broken through. The 3.8m Robbins hard rock machine named Driller Mike after local rapper and activist Killer Mike finished excavation of the 8km tunnel on 3 October.The tunnel is only the third large construction project in the USA to use the Construction Manager at Risk (CMAR)structure. The PC Construction/HJ Russell JV carried out this role. The designer was JP2, a JV of Stantec, PRAD Group, and River 2 Tap. TBM operation was subcontracted to the Atkinson/Technique JV.The TBM launched from the Bellwood Quarry site in October 2016 despite challenging working conditions including summer temperatures hitting 43 degrees Celsius and 100 percent humidity.