Control of Sediment Deposition at Big Sandy Draw Bridge and Interstate 20

Details

• Creators:
  Claborn, Billy J.
• Corporate Creators:
  Texas Tech University. Dept. of Civil Engineering
• Corporate Contributors:
  Texas Department of Transportation
• Subject/TRT Terms:
  Big Sandy Draw Shoulder Treatment Evaluation Drainage Basins Evaluation Interstate Highways Rainfall Runoff Sediment Basin Sediment Load Sediment Trap Sediments Sediment Transport Water Areas Water Surface Profile

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• Publication/ Report Number:
  19361F
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States ; Texas
• Edition:
  Draft: April 1991- August 1992
• Corporate Publisher:
  Texas Tech University. College of Engineering
• 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 was 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 eights sizes located upstream of the bridges. Based on the results of this study, a basin 400 ft long, 200 ft wide and 12 ft deep will just accommodate the 100-year event. Due to the stochastic nature of the rainfall/runoff no definitive recommendation can be made about basin size. A smaller basin will require more frequent removal of the sediment. Right-of-way and access requirements will likely dictate the best basin size.
• Format:
  PDF
• Funding:
  11-80-91-1936
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:b2256d63990951f5d78824094ddcb29515e2fb7175c5e7e4bf13e3fb462076d7c854402e0c07c9bef7f3f6c62919b722bf3cb37076e2c6c3d30a174d12b3d253
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/86102/dot_86102_DS1.pdf
• File Type:
  [PDF - 784.65 KB ]