A New Optimum Method for Designing Dredging System

A New Optimum Method for Designing Dredging System

Zaher Kuhail

Civil Engineering, Faculty of Engineering, Islamic University, Gaza, Palestine.

Received : 19-11-2000 , Accepted : 05-11-2001

Language: English

Abstract

The purpose of this paper is to try to reach a suitable design method for dredging systems, using a large amount of experimental data of the author and others. A theoretical model was derived and adopted, then tested against the chosen experimental data. The mostly used theories in sediment transport with special emphasis on pipe roughness have been investigated and compared with the proposed model. Different pipe roughness, pipe diameters, sediment parameters, and velocities have been studied and tested under different flow regimes and conditions (experimentally and theoretically). A flow regime index has been introduced by the author to allow different flow regimes to be distinguished (heterogeneous, saltation and critical flow regimes). At the end a new method of design has been introduced using the modified roughness transport parameter, which when tested against all data, a satisfactory correlation was reached. This parameter proved to be the best among all existing methods, with the best correlation, which enabled the introduction of a proper design method for dredging purposes.

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