Application of the SHALSTAB model for mapping susceptible landslide areas in mine zone (Quadrila´tero Ferri´fero in southeast Brazil)

Landslides are a common problem in the southeast of Brazil mainly after strong summer rainfalls. The understanding of this process has been awaking the interest of scholars. Many methodologies have been developed in order to identify areas which are landslide prone. A methodology named SHALSTAB has been used and/or refined in order to map instability areas on the hillslope. This methodology is a combination between a hydrological model and a slope stability model, based on a digital elevation model (DEM). Recently it was written in Avenue language and implemented for utilization in the ArcView Software. The methodology was applied in the mine region named Quadrila´tero Ferri´fero in Brazil. A DEM was made and derivatives maps of slope and contributing area were also determined. The soil property parameters were obtained from references. The results demonstrated that the SHALSTAB model is also an effective tool in the identification of susceptible zones for the occurrence of shallow landslides in mine zones.