Journal of Jilin University(Earth Science Edition) ›› 2021, Vol. 51 ›› Issue (6): 1783-1788.doi: 10.13278/j.cnki.jjuese.20200055

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Numerical Simulation on Anisotropic Seepage Characteristics in Dip Layered Rock Slope with Interaction of Seepage and Stress

Shi Wenhao1,2, Yang Tianhong2   

  1. 1. School of Civil Engineering, Suzhou University of Science and Technology, Suzhou 215011, Jiangsu, China;
    2. School of Resources and Civil Engineering, Northeastern University, Shenyang 110819, China
  • Received:2020-03-05 Online:2021-11-26 Published:2021-11-24
  • Supported by:
    Supported by the National Key R&D Program of China (2016YFC0801602) and the Natural Science Foundation of Jiangsu Province (BK20200993)

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Abstract: Slope seepage law with interaction of seepage and stress is very important for slope stability analysis. The anisotropic seepage-stress coupled model established based on the equivalent continuum model and Louis empirical formula is applied to the numerical simulation of seepage in dip layered rock slope. The numerical simulation results show that for the dip layered rock slope, the value of drawdown first increases then decreases with the dip angle of structural plane θ. The outline is like a shoulder, low on both sides and high in the middle. In addition, the closer to the spill points of water is, the greater the influence on the drawdown value of structural plane dip angle; When θ is about 42°, the drawdown reaches its maximum, meanwhile, the anisotropic ratio of permeability also reaches its maximum. When the attitude of strata of dip layered rock slope is given, the anisotropic ratio of permeability decreases with the increase of the buried depth, and the seepage field controlled by the layered structural planes becomes weak gradually, showing a trend of transition to isotropic seepage.

Key words: layered slope, anisotropic ratio of permeability, seepage, coupled seepage and stress, numerical simulation

CLC Number: 

  • TU45
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