Field Investigation of Sandstone Escarpment Stability at East Mountain, Utah, USA

During the last three decades, a significant amount of research has been directed to developing predictive tools for assessing stability Castlegate Sandstone escarpment, travel distances debris and need any control measures in Central Utah. The cliff-forming is 60 m thick at study mine Utah lies approximately 250 above multiple-seam coal reserves. To assess escarpment stability, authors used multiple regression analysis extensive data on geology, mining, collected over many years. volume failed rocks was as response variable. Mine layout options were developed minimize cliff instability frequency mining-induced surface fractures. Geologic geometric variables obtained along 3.7 km exposure 180 locations. A from 29 locations showed that topography plays critical role influencing stability. With additional next longwall block, important identified including canyon slope, thickness mining influence angle. Finally, model prediction area 3. In remote areas Utah, warning signs posted areas.