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2019 Vol.29, Issue 6 Preview Page

Original Article

Evaluation Method of Rock Characteristics using X-ray CT images

X-ray CT 이미지를 이용한 암석의 특성 평가 방안

Kwang Yeom Kim1
,
Tae Sup Yun2*
김 광염1
,
윤 태섭2*
1Associate Professor, Department of Energy & Resources Engineering, Korea Maritime & Ocean University
2Professor, School of Civil and Environmental Engineering, Yonsei University
1한국해양대학교 해양과학기술대학 에너지자원공학과 부교수
2연세대학교 공과대학 토목환경공학과 교수
* Corresponding Author
31 December 2019. pp. 542-557
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Abstract

The behavior of rock mass is influenced by its microscopic feature of internal structure generating from forming and metamorphic process. This study investigated a new methodology for characterization of rock based on the X-ray CT (computed tomography) images reflecting the spatial distribution characteristics of internal constituent materials. The X-ray image based analysis is capable of quantification of heterogeneity and anisotropy of rock fabric, size distribution and shape parameter analysis of rock mineral grains, fluid flow simulation based on pore geometry image and roughness evaluation of unexposed joint surface which are hardly acquired by conventional rock testing methods.

Keywords
X-ray
CT
Rock characteristics
Hetereogeneity
Anisotropy
Joint roughness

암석의 성인과 변성에 따른 내부구조의 마이크로 특성은 암반의 거동 특성에 영향을 미친다. 본 연구에서는 암석 내부의 구성물질의 분포 특성을 반영하는 엑스레이 단층(X-ray CT) 이미지에 기초한 새로운 암석특성의 평가방안을 고찰하였다. 암석의 불균질 특성 및 이방성 특성의 정량화, 암석의 구성광물 입자의 크기분포 및 형상특성, 공극이미지를 이용한 유동해석, 암석내부의 노출되지 않은 절리면 거칠기 평가 등 전통적인 암석의 시험법으로 측정하기 어려웠던 중요한 암석의 특성들이 X-ray CT 이미지의 분석을 통하여 평가될 수 있다.

키워드
엑스레이
단층촬영
암석 특성
불균질성
이방성
절리면 거칠기
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Information
  • Publisher :Korean Society for Rock Mechanics and Rock Engineering
  • Publisher(Ko) :한국암반공학회
  • Journal Title :Tunnel and Underground Space
  • Journal Title(Ko) :터널과 지하공간
  • Volume : 29
  • No :6
  • Pages :542-557
  • Received Date : 2019-12-17
  • Revised Date : 2019-12-23
  • Accepted Date : 2019-12-24
  • DOI :https://doi.org/10.7474/TUS.2019.29.6.542
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