Leeds Flood Allevation Scheme Phase 2 - Assessment of the Stability and Filtration Stability of the Dam.

Abstract

Flooding is a threat to major parts of Leeds city. The flood safety requirements are highly rigorous due to the significant effects that a flood would have on Leeds, which means that the necessary failure probability of flood barriers is quite low. A significant amount of filling materials are necessary for the embankment. Different zones exist in embankment dams and soils are often taken from various borrow locations with varying strengths and stiffness qualities. This could have an impact on stability and settlement. This research presents the stability and settlement response of two sections of the Leeds Flood Alleviation Scheme Phase 2 embankment, where section one is 2.6 m high and section two is 1.2 m high. Based on the MCHW classification proposed by the company, the parametric analysis was carried out for the two main zones of the embankment, the arms and the core, which contained one types of soil (Stony Clay) for both. Using Plaxis 2D for analysis and based on the MCM, the behavior of the embankment was examined. All material zones were subjected to the MCM model. Three crucial parameters, displacement (subsidence), safety factor, and seepage, are taken into account when evaluating the stability of the embankment.