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Effect of Joint Aperture Variation on Hydraulic Behavior of the 2-D DFN System

절리간극의 변화가 이차원 DFN 시스템의 수리적 특성에 미치는 영향

  • Received : 2016.07.28
  • Accepted : 2016.08.22
  • Published : 2016.08.31

Abstract

A computer program code was developed to estimate hydraulic behavior of the 2-D connected pipe network system, and implemented to evaluate the effect of joint aperture on hydraulic parameters of fractured rock masses through numerical experiments. A total of 216 stochastic 2-D DFN(discrete fracture network) blocks of $20m{\times}20m$ were prepared using two joint sets with fixed input parameters of joint orientation, frequency and size distribution. Two different cases of joint aperture variation are considered in this study. The hydraulic parameters were estimated for generated 2-D DFN blocks. The hydraulic anisotropy and the chance for equivalent continuum behavior of the DFN system were found to depend on the variability of joint aperture.

Keywords

Fractured rock mass;Hydraulic aperture;Discrete fracture network;Block hydraulic conductivity;Numerical experiments

Acknowledgement

Supported by : 한국연구재단

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