88c003: Upper gates of Kentucky River Lock No. 2 : 無料・フリー素材/写真
88c003: Upper gates of Kentucky River Lock No. 2 / Bill Alden
| ライセンス | クリエイティブ・コモンズ 表示-継承 2.1 |
|---|---|
| 説明 | Looking E from near upper gates of Lock No. 2This lock is 145 feet long and 38 feet wide, with about a 14 foot lift.The two shrouded electric motors have cogs which engage notches on the beams attached to the lock gates, enabling them to be opened and closed.The lock gates apparently have hydraulically-controlled openings below the waterline to let water in and out of the locks.At right is a capstan which could be used to haul a vessel out of the lock.Across the river below the dam is Thomas Beach, in Owen County.From Kentucky River Authority:Lock and Dam 2 were built from 1836-1842 and support an eleven mile long pool of water. The original dam was a timber crib structure, consisting of an outside frame of timbers filled with dirt and rock, and the original lock was stone masonry. The structures are located thirty one miles above the mouth of the Ohio River. The lock was shut down in 2007 because of structural and mechanical problems. History:1836-1842 Original construction of lock and dam1882 Dam is rebuilt by the Corps of EngineersEarly 1890’s Concrete cap is added to the top of the timber crib dam1950 Wood lock gates are replaced with steel gates1977 Repairs are made to the upper guide wall and guide wall ( the walls leading into the approach to the lock)1980 New concrete is added to the crest of the dam, Surface repairs are made to cracks in the existing concrete cap on the dam, sheet pilling is added in front of the dam1980’s Repairs are made to the lower guide wall See alsoKentucky River navigation charts (2011 version, 5 MB PDF)andKentucky River navigation charts (1972 version, 19 MB PDF)andKentucky River Development: The Commonwealth’s Waterway by Leland R. Johnson and Charles E. Parrish (1999, 9 MB PDF)_____________________________Kentucky River mile 31 Lockport, Kentucky (in Henry County)Mar. 1988file # 88c00335 mm KodachromePlustek OpticFilm 7600iSiverfast 8Picture Window 6some sharpening (unsharp mask)JPEG quality 95 |
| 撮影日 | 1988-03-01 00:00:00 |
| 撮影者 | Bill Alden , Louisville, Kentucky, USA |
| タグ | |
| 撮影地 | Lockport, Kentucky, United States 地図 |
| カメラ | OpticFilm 7600i , Plustek |