Lock and Dam No. 7 will consist of a 110- by 600-ft lock on the right bank and a 980-ft-long, nonnavigable dam of 14 gated spillway bays. A 1:120-scale, semifixed-bed model, reproducing about 7 miles of the Arkansas River, adjacent overbank areas, the lock and dam, and other structures that might affect flow conditions, was used to study navigation conditions in the lock approaches, the design of the upstream guard wall, and the location and design of any training works needed to improve navigation conditions and distribution of flow through the spillway and along the overbank. A self-propelled model towboat and tow were used to study current effects on navigation passing through the locks and through the proposed I-430 Bridge to be located about a mile upstream of the lock and dam. Results of the investigations indicated: (A.) Downbound tows would have difficulty in approaching the lock with the upper lock approach as originally designed because of current alignment; no difficulties were found in the lower lock approach. Satisfactory navigation conditions could be developed in the upper approach by revising the extent and placement of the right bank revetment. (B.) Distribution of flow through the three dam gates near the lock, unsatisfactory with the original design, could be improved by revision of the right bank revetment and end of the upper guard wall. (C.) Navigation hazards will be created by the elevation of the right bank of the upper approach channel, the elevation of the revetment along the left bank of the bend upstream of the proposed I-430 Bridge, and the navigation span of the bridge; however, these hazards can be minimized by careful navigation.


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    Titel :

    Navigation Conditions at Lock and Dam No. 7, Arkansas River: Hydraulic Model Investigation



    Erschienen in:

    Erscheinungsdatum :

    1969


    Format / Umfang :

    6331976


    Medientyp :

    Report


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Klassifikation :


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