›› 2013, Vol. 34 ›› Issue (S1): 393-405.

• Geotechnical Engineering • Previous Articles     Next Articles

Stability analysis of high rock slope based on meticulous description of complex structure

DU Peng-zhao1，LIU Jian1，HAN Zhi-qiang1，XU Hua2   

  1. 1. Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; 2. Sui-Yue Expressway Construction Manayement Office of Province, Wuhan 430050, China
  • Received:2012-08-07 Online:2013-08-30 Published:2014-06-09

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Abstract: In a numerical method for stability analysis of high rock slope, the analysis results will be influenced by the meticulous extent of description for rock mass structure. However, it is difficult to model meticulously for complex jointed rock mass in finite element method at present. In order to solve the problem, discontinuity network modeling and discrete element method(DEM) are combined used in this essay. Based on statistic data and classification of discontinuity, the meticulous description of complex rock mass structure is realized by network simulation program in UDEC. By means of constructing a fine geological model, strength reduction method based on DEM is presented and applied to the stability analysis of a high slope of a hydropower station. Compared the above results with LEM and general DEM, the numerical results show that the potential sliding surface and safety factor of slope are reasonable, with the usage of meticulous description of complex rock mass structure. Consequently, it will provide a new approach for analyzing the failure mode and stability of complex rock slopes.

Key words: rock slope, meticulous description, discrete elements, strength reduction method, stability analysis

CLC Number: 

  • TU 472
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