- Accueil
- Volume 12 (1993)
- Number 2 - Proceedings of the sixth European congr...
- Size and shape of space filling blocks in a quarry
Visualisation(s): 331 (8 ULiège)
Téléchargement(s): 47 (3 ULiège)
Size and shape of space filling blocks in a quarry
![Open Access](images/Open_Access.png)
Abstract
A rock mass divided by natural fractures looks like a set of space filling blocks (polyhedra). In order to characterise the structural design of a rock mass located in the quarries of Comblanchien (Côte d'Or, France), size and shape of block convex hulls outlined on horizontal benches are computed using five size parameters [A (area), B (perimeter), RC and RI (radii of circles C and I : largest contained in and smallest containing the polygon) and DF (Feret Diameter)] and six shape factors [IAm=RC/RI, CBm = 32A/(πB2), CBd is the CBm shape factor for the dynamic equivalent ellipse of the polygon, DCI, DCG and DIG are ratios of distances between centres (centres of circles C/I and G : centre of gravity) to DF]. With such a set of parameters we suggest a classification of blocks, and their size and shape are related to the geological history of the rock mass.