Analytical Model of Hydraulic Pipeline Dredge

by David R. Basco, (A.M.ASCE), Assoc. Prof.; Texas A and M. Univ., College Station, Tex.,

Serial Information: Journal of the Waterways, Harbors and Coastal Engineering Division, 1975, Vol. 101, Issue 1, Pg. 33-48

Document Type: Journal Paper


A hydraulic pipeline dredge system is a complicated combination of mechanical equipment, operational variables, and soil-water interactions. Of primary interest is knowledge of the maximum solids output volume per unit time delivered at the discharge end for a given dredge configuration, digging depth, and pipeline length for a given soil material. Current dredging practice is to estimate performance (output) based on rules-of-thumb developed from experience. This paper develops and demonstrates how performance of a dredge can be computed using basic engineering principles of fluid mechanics and sediment transport. Four fundamental factors which limit dredge output are identified and examined along with the development of a model for computer-based computations of dredge systems.

Subject Headings: Dredging | Hydraulic models | Soil-pipe interaction | Dredged materials | Pipe materials | Transportation engineering | Sediment transport | Computer models

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