A simple method for evaluating fragility of rock slope

T. Sumi, A. Yashima, K. Sawada, S. Moriguchi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

There are large number of dangerous slopes in Japan because of geographical, geological and climate conditions. Due to the limitation of the budget, it is impossible to carry out disaster-prevention measures for all dangerous slopes. Therefore, it is necessary to propose an efficient screening technique to extract high-risk slopes. This study presents a method for evaluation of discontinuous rock slope. Main features of this method are as follows; 1) stability of triangular pyramid and wedge shaped blocks can be evaluated; 2) three modes of failure, i.e. rockslide, rockfall and toppling are taken into account; 3) stability analysis is based on limit equilibrium theory; 4) friction angle, cohesion and tensile strength of joint are taken into account; 5) pore-water pressure and seismic force can be applied to the block; and 6) conditions of stability blocks are evaluated with simplified vector formulas. The proposed method is applied to the practical design for a cut slope in Gifu prefecture, Japan. The reduction in the shear strength of discontinuous planes due to weathering and stress release is taken into account. The rockbolt system as the countermeasure is employed based on the stability analysis.

Original languageEnglish
Title of host publicationProceedings of the 17th International Conference on Soil Mechanics and Geotechnical Engineering
Subtitle of host publicationThe Academia and Practice of Geotechnical Engineering
Pages1710-1713
Number of pages4
DOIs
Publication statusPublished - 2009 Dec 1
Externally publishedYes
Event17th International Conference on Soil Mechanics and Geotechnical Engineering, ICSMGE 2009 - Alexandria, Egypt
Duration: 2009 Oct 52009 Oct 9

Publication series

NameProceedings of the 17th International Conference on Soil Mechanics and Geotechnical Engineering: The Academia and Practice of Geotechnical Engineering
Volume2

Other

Other17th International Conference on Soil Mechanics and Geotechnical Engineering, ICSMGE 2009
CountryEgypt
CityAlexandria
Period09/10/509/10/9

Keywords

  • Rock joint
  • Rockfall
  • Rockslide
  • Slope stability
  • Toppling

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology

Fingerprint Dive into the research topics of 'A simple method for evaluating fragility of rock slope'. Together they form a unique fingerprint.

  • Cite this

    Sumi, T., Yashima, A., Sawada, K., & Moriguchi, S. (2009). A simple method for evaluating fragility of rock slope. In Proceedings of the 17th International Conference on Soil Mechanics and Geotechnical Engineering: The Academia and Practice of Geotechnical Engineering (pp. 1710-1713). (Proceedings of the 17th International Conference on Soil Mechanics and Geotechnical Engineering: The Academia and Practice of Geotechnical Engineering; Vol. 2). https://doi.org/10.3233/978-1-60750-031-5-1710