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Modelling of rock fall on the dam of Place Moulin

pubblicazioni - Memoria

Modelling of rock fall on the dam of Place Moulin

I potenziali fenomeni di dissesto sul versante sinistro della diga di Place Moulin sono stati analizzati mediante modellazione numerica per valutare quali danni la caduta di un ammasso roccioso potrebbe provocare sulla struttura e per fornire indicazioni a CVA in merito alla definizione degli interventi per la messa in sicurezza della diga.

In the past decades, on the left bank of Place Moulin dam there have been landslides and collapses of rock masses that required consolidation and protection works and that led CVA, owner of the structure, to carry out annual monitoring campaigns to assess the state of the banks of the water basin since the early 70s. In recent geological inspections the structural-geologic evolution of the left bank was analysed, identifying potential events of collapse that would involve the crown or the upstream face of the dam. Each event was characterized in terms of volumes of collapse, trajectories and relative risk conditions.

Considering the instability phenomena that have the greatest probability of occurrence, the consequences the fall of a rock mass with predefined dimensions and trajectories could generate on the dam were assessed, analysing the displacements and damage conditions taking into account different points of impact. The results of the numerical modelling have provided to CVA information to plan mitigation and protection actions for the safety of the dam.

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