An Experimental Study for the Hydraulic Behavior of Artificial Rock Joint under Compression and Shear Loading

압축과 전단 하중을 받는 인공 암석 절리의 수리적 거동에 관한 실험적 연구

  • 이희석 (서울대학교 공과대학 지구환경시스템공학부) ;
  • 박연주 (수원대학교 공과대학 토목공학과) ;
  • 유광호 (수원대학교 공과대학 토목공학과) ;
  • 이희근 (서울대학교 공과대학 지구환경시스템공학부)
  • Published : 2000.03.01


Cyclic shear test system, which is capable of measuring flow rate inside rock joint, was established to investigate the hydraulic behavior of rough rock joints under various loading conditions. Laboratory hydraulic tests during compression and shear were conducted for artificial rough rock joints. Prior to tests, aperture characteristics of specimens were examined by measuring surface topography. Permeability changes under compression were well approximated with several hydraulic model. Hydraulic behavior conformed to dilation characteristics in the first stage, and permeability increased with increase of dilation. As the shear displacement progressed, flow rate became somewhat constant due to gouge production and offset of apertures. Hydraulic behavior under cyclic shear loading was also influenced by the degradation of asperities and gouge production. In addition. the relation between hydraulic aperture and mechanical aperture under compression and shear loading was investigated and compared.


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