On Thursday, October 19, twenty civil engineering students from Professor Saleh M. Keshawarz's junior-level Geotechnical Engineering I Class went on a tour of the MDC Kenny/Obayashi South Hartford Conveyance and Storage Tunnel project. Many thanks to the MDC, CDM Smith, the Kenny Obayashi venture, Jeffrey Fournier, and Tom Clavin for making this tour possible for the students.
John Stearns, a writer for hartfordbusiness.com, explained how the tunnel-boring machine chews through shale, siltstone and basalt and travels through several inactive fault zones 175-250 feet below ground and as it moves along, the machine lays sections of pipe to line the tunnel while moving extracted material out of the tunnel. “The tunnel will hold the overflows until a pump at the tunnel’s terminus can move the wastewater up to the plant for treatment, after which the water is discharged into the river in a cleaner state.”
The tour began with a safety orientation and a brief project overview. The students were provided hard hats, safety vests, and eye protection. Geoffrey Rowntree, the project emergency management officer for CDM Smith, led the tour.