Research Article
Oct 1968
What's Ahead for Tunneling Machines
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VIEW THE REPLYAuthor: George HillAuthor Affiliations
Publication: Journal of the Construction Division
Volume 94, Issue 2
Abstract
Ten yr of tunnel construction data from 1955 to 1965 are reviewed to establish particular characteristics of the past-tunneling market. These characteristics include: (1) Total footage of tunnel construction completed each year; (2) a breakdown of these tunnels according to use (water transportation, vehicle tunnels, railroad and subway tunnels and mining tunnels); and (3) a profile of the 1955-1965 tunneling according to unlined-tunnel diameter and tunnel length. This data provided a history of tunneling activity and growth rates which were used in conjunction with expert opinions and announced future tunneling expectations to develop a forecast of 3,000 miles of worldwide-tunneling activity from 1966 to 1976. To estimate the impact of tunneling machines on the total market, a detailed cost analysis is outlined for Drill and Blast versus Mechanical Boring. The economic comparison showed tunneling machines to be an effective economic alternative in a significant portion of the future tunneling. It is estimated that tunneling machines will complete 1,000 miles of the total 3,000 miles forecasted between 1966 and 1976.
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Published In
Journal of the Construction Division
Volume 94 • Issue 2 • October 1968
Pages: 211 - 231
Copyright
© 1968 American Society of Civil Engineers.
History
Published in print: Oct 1968
Published online: Feb 11, 2021
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George Hill
Memb. Tech. Staff, Ingersoll-Rand Co., Res. Cent., Princeton, N.J. (Presently with IBM Corp., Princeton, N. J.).
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Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.