Accession Number : ADA194306

Title :   Old River Low-Sill Control Structure: Dynamic Hydraulic Forces Acting on the Stilling Basin, Survey Boat Safety, and Debris Passage. Hydraulic Model Investigation.

Descriptive Note : Final rept. Dec 77-Jul 78,

Corporate Author : ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS HYDRAULICS LAB

Personal Author(s) : Fletcher, Bobby P

PDF Url : ADA194306

Report Date : Apr 1988

Pagination or Media Count : 65

Abstract : Tests were conducted in 1:36-scale section models of the high and low bays to develop guidance for rehabilitation of the existing stilling basin, to develop guidance for the safety of survey boats operating in the approach to the structure, and to evaluate characteristics of debris passage through the structure. The portion of the basin between the baffles and end still was protected with sloping modules constructed of steel and grout, and tests were conducted to determine the hydraulic forces acting on the modules. A flow spoiler design to reduce uplift forces on the modules and not increase the sliding and uplift forces on the modules and not increase the sliding and uplift forces acting on the stilling basin was also investigated. Survey boat safety tests indicated that a typical survey boat operating upstream of the gate bays should be safe with gate openings equal to or less than 30% of the head on the crest. Debris passage tests indicated that debris up to 35 ft long and 3.0 ft thick would pass through the structure with gate openings equal to or greater than about 30 -40% of the head on the crest.

Descriptors :   *CHANNELS(WATERWAYS), *BOAT AND SHIP SAFETY, SPILLWAYS, BAYS(STRUCTURAL UNITS), HYDRAULIC PRESSURE, BAFFLES, DEBRIS, HYDRAULIC MODELS, SURVEYS, WATER FLOW, SPOILERS, CONTROL SYSTEMS, HYDRAULIC EQUIPMENT, MISSISSIPPI RIVER, LOUISIANA

Subject Categories : Civil Engineering
      Safety Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE