β Scribed by C.O. Okagbue; T.K.S. Abam
No coin nor oath required. For personal study only.
Most of the rivers of the Niger Delta flow through alluvial deposits whose general stratigraphy is that of cohesionless sand overlain by cohesive silty clay. Erosion and recession of the river banks have constituted a threat to many villages along the various creeks in the delta area.
Analyses of the recessional mechanisms indicate that bank failure is initiated by a fluvial erosion of the lower cohesionless bank layer at a much faster rate than the upper cohesive bank layer. This leads to development of overhangs of the upper cohesive materials. The failure mechanism of the river bank is complex, ranging from slip failures in high banks to shearing and toppling failures in low banks. The use of the common slip circle model for stability evaluation appears to be adequate only for high banks. Results obtained for the low banks suggest that the use of this model of stability analyses for low banks may yield misleading results.
π SIMILAR VOLUMES
## Abstract Controllability is one of the most important aspects of chemical process operability, because it can be used to assess the attainable operation of a given process and improve its dynamic performance. The purpose of this article is to outline the main methodologies that have been develop
Bank strength exerts a significant influence on river channel geometry, but quantification of this relationship has been limited to only a few specific circumstances. This is due to both the complex nature of bank strength and the difficulty in incorporating its influence in river channel geometry r
The development of an adaptive predictor gives higher accuracy in the short term forecasting of river system inflow. Summary--The centralized control and administration of water systems including rivers, reservoirs, hydro-power plants and water gates has recently been considered in Japan for the pu
## Abstract An application of a flood risk analysis system is presented for the analysis on the impact of a proposed flood control plan in the Ichinomiya river basin, Chiba Prefecture, Japan. The system consists of two main modules: a physically based distributed hydrological model for flood inunda
## Abstract Overβbank flooding is one of the driving forces controlling ecological integrity of riparian wetlands. Indentifying natural overβbank flooding regime and its temporal variations is crucial for developing conservation and restoration plans and making water resources management policies f