Block Toppling Stability of Rock Block with Rounded Edges using Sarma Approach | ||
| Journal of Mining and Environment | ||
| مقاله 20، دوره 14، شماره 1، فروردین 2023، صفحه 341-353 اصل مقاله (6.4 M) | ||
| نوع مقاله: Original Research Paper | ||
| شناسه دیجیتال (DOI): 10.22044/jme.2023.12630.2295 | ||
| نویسندگان | ||
| Hassan Sarfaraz* ؛ Mohadeseh Sarlak؛ Fatemeh Ashoor؛ Erfan Amini | ||
| School of Mining Engineering, College of Engineering, University of Tehran, Iran | ||
| چکیده | ||
| In rock slopes, block toppling failure is a prevalent instability. In this instability, rock mass consists of a series of dominant parallel discontinuities that are dipping steeply into the slope face, and a series of cross-joints are located normal to the dominant discontinuities. Blocks may slide or rotate due to their weight along the natural cross-joints at their base, and the tensile strength does not significantly affect the stability of the rock slope. The rounding edge of rock columns is a special feature of spheroidal weathering. Firstly, a literature review of block toppling instability is presented. Next, applying the Sarma approach, a new theoretical analysis is proposed for the rock columns with rounded edges. One of the advantages of the proposed approach is that by determining the sign of a parameter called KC, the stability status can be specified. The suggested solution is compared with a pre-existing analytical method through examples and case study. Comparisons indicate that the proposed approach has a satisfactory agreement. It can be concluded that with weathering and rounding of the block edges, the safety factor decreases non-linearly. Therefore, this solution can be used to evaluate the blocky toppling failure regarding the erosion phenomenon. | ||
| کلیدواژهها | ||
| Rock Slopes؛ Block Toppling؛ Theoretical Approach؛ Sarma Methodology؛ Safety Factor | ||
| مراجع | ||
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