List of products by author: M. Scialpi

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  Rondout West Branch Bypass Tunnel

  Abstract: A single shield hard rock TBM is set to bore in New York State where it will encounter water inflows with high volume and pressures up to 20 bar. To overcome these difficult conditions, the TBM is designed to control 2500 gpm (9500 l/min) water inflows and seal against 30 bar (20 bar with a 1.5 safety factor). The TBM will bore a tunnel to replace part of the Delaware Aqueduct, which supplies...

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  Unique Hybrid EPB Design for use in Coal Mine Drifts

  Abstract: The history of mechanized tunneling for mine exploration and access tunnels started more than fifty years ago with the Steep Rock Iron Mine in northwestern Ontario, Canada. The use of Tunnel Boring Machines (TBMs) in mines continued through the 1960s and 1970s, achieving high rates of excavation in soft rock, but their applicability was limited and their costs too high. Despite the drawbacks,...

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