Control of sediment deposition at Big Sandy Draw Bridge and Interstate 20
Title:
Control of sediment deposition at Big Sandy Draw Bridge and Interstate 20
Author:
Claborn, B. J., author.
Personal Author:
Physical Description:
xi, 25 pages : illustrations, maps (some folded) ; 28 cm.
Series:
Research report ; no. 11-80-91-1936
Research report (Texas Tech University. Department of Civil Engineering) ; no. 1936.
General Note:
"June 1992."
Contents:
Summary -- Implementation statement -- Introduction -- Description of the problem -- Future of the problem -- Possible solutions -- Available data -- New data -- Determination of the sediment load -- Deterimination of the flow hydrograph -- Determination of water surface elevations -- Determination of rating curve for sediment and flow at the settling basin -- Modeling the behavior of the settling basin -- Evaluation of results -- Conclusions and recommendations -- References.
Abstract:
The objective of this study was to identify causes and recommend remedial measures for the sand deposition at the Big Sandy Draw bridges on Interstate 20. The source of the sand is both water and wind erosion on the 11.3 sq mi watershed. Deposition in the vicinity of the bridges is caused by severe backwater from Beals Creek, located about one-quarter mile downstream. Two historical and the one, two, ten, twenty-five, fifty, and one-hundred year precipitation events were modeled using HEC-1. Yang's sediment transport equation was used to estimate the sediment load for each of these events. HEC-2 was used to determine a rating curve above the bridges. The FEMA study data were used to set the Beals Creek water surface for concurrent flow in Big Sandy Draw and Beals Creek. The Bureau of Reclamation's SEDSIZE program was used to evaluate the trapping capabilities of sediment basins of eight sizes located upstream of the bridges.
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