Numerical analysis of stability for an antidip stratified rock slope

Yue Cai, Yasuhiro Mitani, Tetsuro Esaki

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

As a specific instability of rock slope, an antidip stratified rock slope is different from the sliding one, and the failure mechanism has not been clarified yet. It is clear that the flexural toppling behavior is influenced by the geological structure significantly, and the numerical method based on continuum theory does not seem to work well. It is aimed to discuss the flexural toppling mechanism by using a universal distinct element code (UDEC), and to find out the critical parameters for the future large slope cutting. Firstly, a numerical analysis has been conducted to simulate the flexural toppling failure phenomenon, which happened in a construction site. Then, a series of numerical analyses have been carried out further in order to find out the critical geometrical parameters of the slope for flexural toppling prediction. A significant slip behavior is found between the blocks in the UDEC model; and typical flexural failure phenomenon is reproduced in the simulation. According to the numerical results, a thinner spacing of joints leads to a trend of flexural toppling in case of the same geometrical parameters of the dip angle and the gradient of the cutting slope. The toppling failure is related with an alternate relationship between the joint dip angle and the gradient of the cutting slope.

Original languageEnglish
Pages (from-to)2517-2522
Number of pages6
JournalYanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering
Volume27
Issue number12
Publication statusPublished - Dec 2008

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Geotechnical Engineering and Engineering Geology
  • Geology

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