Cette étude illustre la nécessité de mettre en oeuvre une approche géologique multi-échelle pour évaluer le contenu en amiantes nocives dans un massif d'ophiolites. Une étude de cas provenant d'une carrière en activité dans la région de Carinthie en Autriche est présentée. Les données obtenues ont indiqué l'existence de quatre zones principales au sein du massif rocheux. L'étude a permis d'identifier les horizons qui pourraient être utilisés à des fins commerciales, notamment comme ballast de voie ferrée et couche de base de route. De nombreux tests ont été réalisés. Ils ont confirmé que les amphiboles asbestiformes n'existaient pas dans cette carrière. L'attention est attirée sur les ambiguïtés de la législation actuelle concernant la présence d'amiante.
This study illustrates the importance of undertaking a multi-scale geological approach when assessing ophiolites which may contain harmful asbestos. A case history from an active quarry in the Carinthia region of Austria is presented. The data obtained indicated four main zones within the heterogeneous rock mass. The study identified those horizons which could be used for commercial purposes, notably railway ballast and road sub-base. Extensive testing was undertaken which confirmed that asbestiform amphiboles were not present in the quarry. Attention is drawn to the ambiguities in current legislation regarding the presence of asbestos.
MULTI-SCALE GEOLOGICAL EVALUATION FOR QUARRYING ACTIVITIES IN OPHIOLITIC ROCKS: IMPLICATION FOR ASBESTOS-RELATED LEGISLATION
Girolamo Belardi;Gianluca Vignaroli;Marcello Serracino
2013
Abstract
This study illustrates the importance of undertaking a multi-scale geological approach when assessing ophiolites which may contain harmful asbestos. A case history from an active quarry in the Carinthia region of Austria is presented. The data obtained indicated four main zones within the heterogeneous rock mass. The study identified those horizons which could be used for commercial purposes, notably railway ballast and road sub-base. Extensive testing was undertaken which confirmed that asbestiform amphiboles were not present in the quarry. Attention is drawn to the ambiguities in current legislation regarding the presence of asbestos.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.