5.6 Consolidation

Where dumps are founded on fine grained soils, an assessment of the consolidation characteristics of the underlying soils is required. This information is necessary to predict foundation settlements and the potential for generation and dissipation of excess pore pressure due to dump loading.

Consolidation settlement of foundation soils may also reduce infiltration and improve the shear strength characteristics of foundation materials. Consolidation of foundation soils induces strain in the dump material with a consequent change in shear strength and behaviour.