Paramètres d'affaissement pour la hierarchisation des zones à risque dans le bassin ferrifère lorrain

Abstract : The consequences of mining collapse on the frame and the infrastructures of surface are directly related to the parameters of subsidence (vertical amplitude, horizontal strain, ..). These parameters are specific to each field even each site. They depend on the nature and the structure of the grounds. In the Lorraine iron-bearing basin, the effects on the surface induced by collapse of mine era by rooms and pillars abandoned are known for 18 cases. The main objective of this research is to determine, by back analysis of subsidence cases due to mining removal of pit props or collapse, the parameters specific to the Lorraine iron-bearing basin in order to use them for the prediction of depressions in zones at the risk of progressive collapse. A comparison of the effects induced by the mining effect with those due to collapses was also carried out. Within the framework of the study, we conform that the cases of subsidence and collapse are very similar. We present, the methodology of back analyzes used to determine subsidence parameters, individually. We describe then, starting from the results obtained, the subsidence parameters of the basin thus determined according to the configuration mining.
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  • INERIS : PU-2003-010

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Marwan Al Heib, Jean-Pierre Josien, Yasser El Shayeb. Paramètres d'affaissement pour la hierarchisation des zones à risque dans le bassin ferrifère lorrain. Colloque International Après-mine 2003, Feb 2003, Nancy, France. pp.NC. ⟨ineris-00972406⟩

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