Research Article
Nov 1976
Urban Tunnels—An Option for the Transit Crisis
Authors: Matt S. Walton and Richard J. ProctorAuthor Affiliations
Publication: Transportation Engineering Journal of ASCE
Volume 102, Issue 4
Abstract
There has been no fundamental modification of the basic system of subway construction in the United States since the first subways were built in the 19th century. Excavation equipment and methods have been vastly improved, but subway system design and the basic construction sequence and procedure remain the same. New high-speed boring machine technology in suitable subsurface geologic conditions can introduce radical economies and reduce environmental impacts, if transit planners are aware of construction processes that include the economies of boring machine excavation. New approaches to subway construction are examined.
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Published In
Transportation Engineering Journal of ASCE
Volume 102 • Issue 4 • November 1976
Pages: 715 - 726
Copyright
© 1976 American Society of Civil Engineers.
History
Published in print: Nov 1976
Published online: Feb 5, 2021
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Authors
Affiliations
Matt S. Walton
Dir., Minnesota Geological Survey, St. Paul, Minn., formerly, Consultant, Englewood, Colo.
Richard J. Proctor
Engrg. Geologist, Arcadia, Calif.
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
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.