4.5 Dumping Rate

The impact of loading rate on physical stability of dump is very important. The placement of loose blasted rock or soils in a manner which does not allow for sufficient time for the material to develop strength at reasonable density will experience significant settlement. Rapid loading and increase in toe loading associated with slope and crest deformations overload the toe block.

High rate of dumping may result in generation of excess pore pressures. In such cases, dumping rate may have to be controlled and pore pressure monitored during construction to ensure that excess pore pressures are effectively dissipated and foundation stability is maintained.