Abstract:
A study was conducted to determine the index and hydraulic properties of the porous
and at five (5) metres interval during the November period. Specific gravity, moisture
content, particle size distribution (PSD) and permeability test of the porous media were
determined in accordance with the International Standard IS: 2720. Data from the
above-mentioned tests were analysed using Statistical Package for Social Sciences (SPSS).
The specific gravity of the sand (2.65 to 2.67), coefficient of curvature (0.54 to 1.35) and
uniformity coefficient (1.25 to 2.77) show that the sand samples are well graded and
uniformly distributed. The models generated for the locations were . Where f is the friction
factor; Re is the Reynolds number; Q is the flow rates;is the hydraulic gradient and is the
velocity of flow. The hydraulic conductivity of the river sand sample ranges from for the
various locations considered and location A at upstream of the river bed which is about 1m depth from river level has the highest value (and location G at downstream of the river bed which is about 1.5 m depth from river level has the lowest value ( are good location. It is recommended that proper attention should be given to the friction factor, velocity of flow,
flow rate and the Reynolds number as these are the main parameters that result in flooding of embankment thereby resulting in environmental hazard and seepage of water through dams.media.
