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Old 12-10-2018, 07:48 PM
mmartin798 mmartin798 is offline
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Join Date: Feb 2014
Location: Michigan
Posts: 563

I think I answered my own question. I found a patent application for improving the calculations for turning radius of TBMs. It seems it is dependent upon the desired tunneling speed, the cutting pressure, and the strength of the material being bored. So I guess 1600' tunnel diameter could be as correct as any other number.
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