Abstract
The calculation method was based on the fan-shoot searching technique which proposed to evaluate the stability of a quarrying slope. By using the simplified slice method theory, it was possible to deal with the discontinuous planes, as weak as cracks in a shear strength, and search for a slide plane of an arbitrary shape. When applying this method to the quarrying slope on site, it required the data on the strength of rock masses and the shear characteristics of cracked surfaces. In this study, the former were estimated from the rock testing and by the seismic prospecting, and the latter were obtained by the shear testing of rock samples carrying a simple crack. From the result of the stability analysis for the quarrying slope on site, a slide plane of high probability of occurrence was indicated.
