Volume 28 Issue 6
Dec.  2022
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Article Navigation >  Journal of Geomechanics  > 2022  >  28(6): 948-955
LI Changhu, LI Zhengzheng, WANG Qun, 2022. Analysis of the connectivity rate of the gently dipping structural plane of the foundation rock of an arch dam of a hydropower station in southwest China. Journal of Geomechanics, 28 (6): 948-955. DOI: 10.12090/j.issn.1006-6616.20222822
Citation: LI Changhu, LI Zhengzheng, WANG Qun, 2022. Analysis of the connectivity rate of the gently dipping structural plane of the foundation rock of an arch dam of a hydropower station in southwest China. Journal of Geomechanics, 28 (6): 948-955. DOI: 10.12090/j.issn.1006-6616.20222822
shu

Analysis of the connectivity rate of the gently dipping structural plane of the foundation rock of an arch dam of a hydropower station in southwest China

doi: 10.12090/j.issn.1006-6616.20222822

  • Northwest Engineering Corporation Limited, Xi'an 710065, Shaanxi, China

Funds:

the Scienfic Project of the Northwest Engineering Corporation Limited XBY-KJ-2019-19

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  • Received: 2022-06-05
  • Revised: 2022-09-18
    Abstract

  • The connectivity rate plays an essential role in the stability evaluation of engineering rock masses such as slopes and dam foundations. This paper takes the foundation rock mass of an arch dam of a hydropower station in southwest China as the research object. Based on the field-measured data and the self-developed fissure network simulation program, we used the Monte-Carlo stochastic simulation method to calculate the connectivity rate of the gently dipping structural planes and the strength parameters in different shear directions of rock mass on the left and right bank of the hydropower station. The results show that the connectivity rate of the left and right banks of the hydropower station is different in different shear directions, and the overall fissure connectivity rate is low. The fissure connectivity rate of the gently dipping structural planes at PD02 on the right bank is about 27.35%, the friction coefficient is 1.04, and the cohesion is 0.89 MPa. The research results can provide a theoretical reference for this and similar projects.

     

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