The Influence of the Local Geological Setting and the Grouting Measures on the Reduction of Uplift

The behaviour of the subsoil during impoundment first supplies information on whether the seepage through the underground is small enough, and whether the reduction of the uplift pressure is sufficient. Substantial variations from the predicted behaviour are frequently noted while taking measurements during impoundment. Such variations demonstrate that the intended success of the grouting measures is occasionally not achieved, or that an existing grout curtain is not stressed due to hydrogeological circumstances. The dominating influence of the geological conditions on the reduction of the uplift is recognizable particularly in cases of largely anisotropic rocks.