Geomechanics and Engineering

  • 제17권3호
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  • Pages.279-285
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  • 2019
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  • 2005-307X(pISSN)
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  • 2092-6219(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Evaluating the effects of the inclinations of rock blocks on the stability of bimrock slopes

  • 투고 : 2018.02.20
  • 심사 : 2019.02.12
  • 발행 : 2019.02.28
⟨ 이전 논문 다음 논문 ⟩

초록

The process of slope stability analysis is one of the most important stages in design of some civil and mining projects. Bimslopes are made from bimrocks (block-in-matrix rocks) where rocky blocks are distributed in a bonded matrix of finer texture. These kind of slopes are often seen in weathered and near-surface depths. Previous studies have shown that VBP (Volumetric Block Proportion) is one of the most significant factors affecting bimrocks strength and consequently the stability of bimslopes. In this paper, the influence of block inclinations on bimslope stability have been investigated. For this purpose, 180 theoretical models have been made with various VBPs, all of them have a specified block size distribution. These bimslopes contain blocks with differing dips relative the slope inclination. Also for each kind of block inclination, 10 different blocks arrangements have been modeled. The Finite Element Method (FEM) was used to analysis the stability of these bimslopes models. The results showed the inclination of blocks has a strong impact on the Safety Factor and stability of bimslopes. When the difference in angle of dip of blocks relative to the slope angle is maximum, the Safety Factor of bimslopes tends to be a maximum compared with the matrix-only state. Furthermore, with increasing VBP of bimslopes stability increases. The graphs obtained from this study could be used for preliminary guidance in the projects design with bimslopes.

키워드

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피인용 문헌

  1. Soil-Rock Slope Stability Analysis under Top Loading considering the Nonuniformity of Rocks vol.2020, 2019, https://doi.org/10.1155/2020/9575307
  2. Numerical Investigation of the Influence of Rock Characteristics on the Soil-Rock Mixture (SRM) Slopes Stability vol.24, pp.11, 2019, https://doi.org/10.1007/s12205-020-0034-1
  3. Application of the tortuous surface method to stochastic analysis of bimslope stability vol.79, pp.10, 2019, https://doi.org/10.1007/s10064-020-01909-5