터널과지하공간 (Tunnel and Underground Space)

  • 제24권3호
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  • Pages.243-254
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  • 2014
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  • 1225-1275(pISSN)
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  • 2287-1748(eISSN)
한국암반공학회 (Korean Society for Rock Mechanics and Rock Engineering)
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입자 기반 개별요소모델을 통한 암석의 강도 및 변형 특성 모사

Numerical Simulation for Characteristics of Rock Strength and Deformation Using Grain-Based Distinct Element Model

  • 박정욱 (한국지질자원연구원 지구환경연구본부) ;
  • 이윤수 (경북대학교 지질학과 대학원) ;
  • 박찬 (한국지질자원연구원 지구환경연구본부) ;
  • 박의섭 (한국지질자원연구원 지구환경연구본부)
  • 투고 : 2014.06.23
  • 심사 : 2014.06.26
  • 발행 : 2014.06.30
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초록

본 연구에서는 GBM-UDEC(grain based model combined with Universal Distinct Element Code) 모델을 통해 암석의 역학적 거동을 모사하기 위한 수치해석기법을 소개하였다. 이를 적용하여 암석의 광물학적 구조를 다각형 입자의 집합체로 표현하고, 압축하중 하에서 암석의 파괴 특성 및 인장균열의 전파 양상를 살펴보았다. 제시된 수치해석모델은 단축압축강도시험 및 간접인장강도시험을 통해 관찰되는 암석의 역학적 거동 특성을 합리적으로 모사할 수 있는 것으로 나타났다.

The present study introduces a numerical technique to simulate the mechanical behavior of brittle rock, based on a grain-based model combined with Universal Distinct Element Code (GBM-UDEC). Using the technique, the microstructure of rock sample was represented as an assembly of deformable polygonal grains, and the failure process with the evolution of micro tensile cracks under compression was examined. In terms of the characteristics of strength and deformation, the behaviors of the simulated model showed good agreement with the observations in the laboratory-scale experiments of rock.

키워드

참고문헌

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피인용 문헌

  1. Polygonal Grain-Based Distinct Element Modelling of Mechanical Characteristics and Transverse Isotropy of Rock vol.26, pp.3, 2016, https://doi.org/10.7474/TUS.2016.26.3.235