Installation of Pipelines Beneath Levees Using Horizontal Directional DrillingK. Staheli, D. Bennett, T. Hurley, H.W. O'DonnellPipeline Research Council International / 01-Apr-1998 / 210 pages

Need: In and across the U.S. Army Engineer District (USAED) Lower Mississippi Valley, lies the heart of the pipeline transmission network of the United States. Hundreds of individual pipelines traverse from Texas and out of the Gulf of Mexico across the numerous rivers, bayous, and wetlands of Louisiana to service the northeast population centers on the Atlantic coast. Along the leveed banks of the lower Mississippi River, pipeline crossings exist between nearly every bendway. The crossing of these earthen flood control structures presents a difficult and expensive construction problem due to concerns about the integrity of the levee against sliding failure. Although horizontal directional drilling (HDD) could offer cost-effective, safe alternatives to installing pipelines with open trenching, the Corps of Engineers (CE) does not have standard guidelines allowing the installation of pipelines with this construction method.
Result: The objectives of the research are to develop guidelines for installing pipelines beneath rivers and within levee right-of-way using HDD techniques, without endangering the levees, and to demonstrate that these techniques offer substantial economic and operational advantages over current practices.
Benefit: The recommended guidelines for the installation of pipelines with HDD are based on the results and conclusions of the Construction Productivity Advancement Research Program field evaluation, as well as analytical studies of soil/drilling fluid interaction and evaluations of case histories. The recommendations address the main issues of concern that have been expressed by USAED personnel, either in USAED regulations or in meetings and discussions.

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