ABSTRACT
Figure 5 shows the deformation of slope under the acceleration increased condition for the random packing assembly. The bond break occurs at the toe of the slope, and then the damaged area propagates upward. Figure 6 shows the relation between the allowable slope height H = nhd and the slope toe angle. The height for the slope of β= 80◦ is the smallest. This could result in that the slope of 80◦ is the most unstable slope in the three slopes. Figure 6 shows the dependency of the allowable height on the values of the contact strengths τc and σc as well as the slope angle β. The case of τc = 2.0 MPa and σc = 1.0 MPa gives the greater height than the case of τc = 1.0 MPa and σc = 2.0 MPa while cohesion and internal friction for these two cases exhibit no clear dependence. No definitive statements about the effects of input parameters on the allowable height, however, this procedure is supposed to be a possible method to analyze the stability of rock slope, displaying the progressive mechanism of failure development and consequence of the internal fracturing.
