Análise das descontinuidades e modos de ruptura de depósito de argila refratária

Abstract

Refractory clays are widely used in industry as raw material for the manufacture of silico-aluminous refractories as linings for certain types of industrial kilns. In addition, these clays are widely used in the production of insulating bricks for fireplaces, barbecues and domestic ovens, as well as in the manufacture of certain types of ceramics and ceramic linings, and of special glasses and mortars (refractory cements). Applications in the refractory industry, geological occurrence and origin, important deposits in general mines, economic aspects, data on reserves and production, and the characteristics of the refractory products industrial sector were portrayed. Also discussed were the failure modes and the importance of correct identification with the respective kinematic analyses. In the field work discontinuities were surveyed and the probability of rupture (planar, wedge and overturning) of all slopes was calculated, and a high probability of rupture was identified in some sections (above 59%). It is suggested a more detailed study in which simulations changing the direction and dip of the slopes can be evaluated, as well as the need for specific tests to characterize the structures present in the pit. If the pit presents an expansion project or has its mining increased considerably (in depth), new studies should be conducted to assess the impact of this change.