›› 2010, Vol. 31 ›› Issue (3): 949-955.

• Numerical Analysis • Previous Articles     Next Articles

3D anisotropic numerical analysis of rock mass with columnar joints for dam foundation

XU Wei-ya1，ZHENG Wen-tang1，NING Yu1，MENG Guo-tao1，WU Guan-ye2，SHI An-chi2   

  1. 1. Geotechnical Research Institute, Hohai University, Nanjing 210098, China; 2. East China Investigation and Design Institute,China Hydropower Engineering Consulting Group Co., Hangzhou 310014, China
  • Received:2008-06-13 Online:2010-03-10 Published:2010-03-31

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Abstract:

Based on the analysis of discontinuity and anisotropy of columnar joints, a 3D numerical simulation is carried out for an arch dam and its foundation. Considering the initial ground stress of river valley and anisotropic mechanical property of rock mass, the computation results with isotropic and anisotropic models are compared and analyzed. The result shows that the characteristics of columnar joints have obvious influence on the stress and displacement of engineering rock mass. The influence of columnar joints on dam or abutment stability is very important; and a successful application is provided for the analysis of anisotropic property of rock mass in this dam area.

Key words: columnar joint, isotropy, anisotropy, arch dam, dam foundation

CLC Number: 

  • TU 457
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