Análise Geotécnica e Geofísica de estabilidade de taludes em uma mina na região de Caçapava do Sul - RS

Abstract

Geotechnics seeks to determine the geomechanical properties of soils and rocks in order to solve engineering problems and understand the behavior of the material before an anthropic action. Open pit mines are responsible for most of the Brazilian mineral production and this mining method has slopes in its structure. Slope is any sloping surface of soil or rock material; it can be natural or artificial. Slope stability is related to its safety factor, which is calculated from the geomechanical characterization of the soil and numerical modeling. The determination of the safety factor is fundamental in the prevention of landslides, it is based on the Limit Equilibrium method and on the Mohr-Coulomb criterion. This work seeks to correlate geological, geophysical, and geotechnical knowledge through the application of methods such as scanline and resistivity tests, and the use of specific software to define the safety factor of a marble open-pit mine in the region of Caçapava do Sul – RS. The slope model will be proposed with the aid of the software Slide aiming a minimum safety factor of 1.3, as recommended is the classification of the standards of ABNT NMR – 02 item 2.4. Multiple calculations were performed for the Safety Factor and the lowest value obtained was 6,026. The value obtained from the modeling is considered satisfactory.