In this thesis, scour of cohesive soils by submerged circular turbulent wall jets is investigated. Two sets of experimental data obtained by Abt (1980) and Mazurek (unpublished) are analyzed. The first set of data is a series of twelve experiments of 1000 minutes duration, where the scour in one cohesive material downstream of a culvert outlet was observed, with the tailwater maintained at a certain height above the culvert invert. The other set of data is an unpublished laboratory study of the scour of clays by a submerged circular wall jet produced in two cohesive soils by flow through a nozzle with a diameter of 4.9, 5.97 or 12.18 mm. Twenty-three experiments were performed to examine the shape and size of the scour holes produced in these materials in the asymptotic state. In the present study, dimensionless scour hole profiles are developed to give the general shape of the scour holes produced by these jets in cohesive material. It is seen the scour holes have the same dimensionless shape, and this shape is consistent through the scouring process. Using dimensional analysis, a model has been developed to predict the characteristic dimensions of the scour hole, such as the maximum scour depth, the length of the scour hole, and the maximum width. These dimensions are found to correlate well with a dimensionless excess shear stress term found from dimensional analysis.Dept. of Civil and Environmental Engineering. Paper copy at Leddy Library: Theses u26 Major Papers - Basement, West Bldg. / Call Number: Thesis2002 .L583. Source: Masters Abstracts International, Volume: 41-04, page: 1142. Adviser: Kerry Mazurek. Thesis (M.A.Sc.)--University of Windsor (Canada), 2002.
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