Journal of Mountain Science

, Volume 14, Issue 4, pp 771–781

A modified Hoek-Brown failure criterion considering the damage to reservoir bank slope rocks under water saturation-dehydration circulation

  • Xin-gang Wang
  • Jia-ding Wang
  • Tian-Feng Gu
  • Bao-qin Lian
Article

DOI: 10.1007/s11629-016-4206-x

Cite this article as:
Wang, X., Wang, J., Gu, TF. et al. J. Mt. Sci. (2017) 14: 771. doi:10.1007/s11629-016-4206-x
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Abstract

After water is impounded in a reservoir, rock mass in the hydro-fluctuation belt of the reservoir bank slope is subject to water saturationdehydration circulation (WSDC). To quantify the rate of change of rock mechanical properties, samples from the Longtan dam area were measured with uniaxial compression tests after different numbers (1, 5, 10, 15, and 20) of simulated WSDC cycles. Based on the curves derived from these tests, a modified Hoek- Brown failure criterion was proposed, in which a new parameter was introduced to model the cumulative damage to rocks after WSDC. A case of an engineering application was analyzed, and the results showed that the modified Hoek-Brown failure criterion is useful. Under similar WSDC-influenced engineering and geological conditions, rock mass strength parameters required for analysis and evaluation of rock slope stability can be estimated according to this modified Hoek-Brown failure criterion.

Keywords

Modified Hoek-Brown criterion Reservoir bank slope Hydro-fluctuation belt Water saturation-dehydration circulation Damage 

Copyright information

© Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag Berlin Heidelberg 2017

Authors and Affiliations

  • Xin-gang Wang
    • 1
    • 2
  • Jia-ding Wang
    • 1
  • Tian-Feng Gu
    • 1
  • Bao-qin Lian
    • 2
  1. 1.State Key Laboratory of Continental DynamicsDepartment of Geology, Northwest UniversityXi’anChina
  2. 2.School of Geology Engineering and SurveyingChang’ an UniversityXi’ anChina

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