A Study of Locally Changing Pore Characteristics and Hydraulic Anisotropy due to Bedding of Porous Sandstone

다공질 사암의 층리에 따른 국부적 공극특성 변화와 수리 이방성 특성

  • 양화영 (과학기술연합대학원 대학교 지반신공간공학부) ;
  • 김한나 (서울대학교 공과대학 에너지시스템공학부) ;
  • 김경민 (과학기술연합대학원 대학교 지반신공간공학부) ;
  • 김광염 (한국건설기술연구원 SOC성능연구소 Geo인프라연구실) ;
  • 민기복 (서울대학교 에너지자원공학과)
  • Received : 2013.06.10
  • Accepted : 2013.06.27
  • Published : 2013.06.30


Anisotropy observed in sedimentary rock such as sandstone is mainly caused by existence of bedding consequently influencing on its hydraulic characteristics. The aim of this study is to investigate the influence of locally changing pore structure due to bedding on the hydraulic anisotropy of sandstone, in terms of localized porosity. X-ray CT scan is applied to observe the internal pore structures which is hard to be seen by other experimental methods. Permeability test is also conducted for samples cored at every $15^{\circ}$ from $0^{\circ}$ to $90^{\circ}$ with respect to bedding plane. As a result, the permeability anisotropy is manifest having 1.8 of anisotropy ratio ($k_{90^{\circ}}/k_{0^{\circ}}$) and corresponds with the anisotropy of porosity due to bedding.


Porous sandstone;Hydraulic anisotropy;Permeability;X-ray CT;Porosity


Supported by : 한국에너지기술평가원


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