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Hydraulic Analysis of a Discontinuous Rock Mass Using Smeared Fracture Model and DFN Model

DFN 모델과 스미어드 균열 모델을 이용한 불연속 암반의 3차원 수리해석

  • Park, Jungchan (Department of Energy Resources Engineering, Inha University) ;
  • Kim, Jin-Seop (Korea Atomic Energy Research Institute) ;
  • Lee, Changsoo (Korea Atomic Energy Research Institute) ;
  • Kwon, Sangki (Department of Energy Resources Engineering, Inha University)
  • 박정찬 (인하대학교 에너지자원공학과) ;
  • 김진섭 (한국원자력연구원) ;
  • 이창수 (한국원자력연구원) ;
  • 권상기 (인하대학교 에너지자원공학과)
  • Received : 2019.09.18
  • Accepted : 2019.10.09
  • Published : 2019.10.31

Abstract

A three-dimensional(3D) equivalent continuum modeling was performed to analyze hydraulic behavior of rock mass considering discontinuities by using DFN model and smeared fracture model. DFN model was generated by FLAC3D and smeared fracture model was applied by using FISH functions, which is built-in functions in FLAC3D, for equivalent continuum model of fractured rock mass. Comparative analysis with 3DEC, which is for discontinuum analysis, was conducted to verify reliability of equivalent continuum analysis by using FLAC3D. Similar results of hydraulic analysis under the same conditions could be achieved. Equivalent continuum analysis of fractured rock mass by using DFN model was implemented to compare with existing analytical methods for inflow into the tunnel.

Acknowledgement

Supported by : 한국연구재단

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