Water intrusion Problems in Transit Tunnels
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1986-05-01
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Edition:Technical report; Sep 1983-Jul 1985
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Abstract:This report presents the findings of five case studies in which an in-depth analysis was made of tunnel water intrusion problems in transit tunnels. Water intrusion parameters of transit systems in Atlanta, Boston, Buffalo, New York and Washington, DC, relating to geologic, hydraulic, design, construction and leakage problems which may be associated with tunnel water intrusion are examined. Special emphasis is placed on grouting applications to leaking and the recommended practices derived from past and current experiences. The report attempts to systematically analyze tunnel leakage problems and potential causes across several diverse transit systems. The results suggest that choices of remedies and maintenance control may relate to design and construction considerations, particularly those associated with original concrete processes and applications. Cost factors and comparisons, while systematically pursued, produced fewer insights than were expected.
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