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Friction Measurements in the Apalachia Tunnel
The Apalachia power tunnel of the Tennessee Valley Authority was in continuous operation from its opening in 1943 until October, 1953, at which time it was unwatered and inspected. The tunnel surfaces were found to be covered with a uniform, 5/16-in. deposit of a black mucilaginous material. Friction measurements were made in the tunnel in 1944, five months after the initial filling, and in 1954, five months after the inspection.
The paper presents the methods used in reducing both sets of data. The results are presented in terms of the friction coefficient, f, in the Weisbach equation. Values of n for the Manning equation are also shown. A description is given of each type of surface for which coefficients could be determined.
Friction Measurements in the Apalachia Tunnel
The Apalachia power tunnel of the Tennessee Valley Authority was in continuous operation from its opening in 1943 until October, 1953, at which time it was unwatered and inspected. The tunnel surfaces were found to be covered with a uniform, 5/16-in. deposit of a black mucilaginous material. Friction measurements were made in the tunnel in 1944, five months after the initial filling, and in 1954, five months after the inspection.
The paper presents the methods used in reducing both sets of data. The results are presented in terms of the friction coefficient, f, in the Weisbach equation. Values of n for the Manning equation are also shown. A description is given of each type of surface for which coefficients could be determined.
Friction Measurements in the Apalachia Tunnel
Elder, Rex A. (author)
Transactions of the American Society of Civil Engineers ; 123 ; 1249-1274
2021-01-01
261958-01-01 pages
Article (Journal)
Electronic Resource
Unknown
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