›› 2011, Vol. 32 ›› Issue (11): 3473-3478.

• Numerical Analysis • Previous Articles     Next Articles

Seepage field 3D finite element simulation of concrete faced rockfill dam under failure condition of vertical fracture

CHEN Shou-kai1，YAN Jun2，LI Jian-ming3   

  1. 1. School of Water Resources, North China Institute of Water Conservancy and Hydroelectric Power, Zhengzhou 450011, China; 2. College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China; 3. Nanning Institute of Water Conservancy and Hydropower Design, Nanning 530001, China
  • Received:2011-01-13 Online:2011-11-01 Published:2011-11-09

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Abstract: The improved node virtual flow method is used to solve unconfined seepage field; and the damage vertical flow behavior is simulated by zero thickness crack model; and then the finite element method of crack seepage problem of the concrete faced rockfill dam (CFRD) is obtained. Based on a CFRD, the program composition with Fortran was used to calculate the 3D seepage field under the failure condition of the single or more than one vertical fracture of concrete slab; and the water head distribution, saturation line and leakage are obtained; and then the rules and characteristics of unconfined seepage field are analyzed. The results show that the method can accurately position exit point and saturation line of seepage field of CFRD, and well simulate seepage field in dam area under the failure condition of vertical fracture of concrete slab so as to provide reference for concrete face jointing design of CFRD.

Key words: concrete faced rockfill dam (CFRD), vertical fracture, seepage, improved node virtual flow method, crack model

CLC Number: 

  • TV 315
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