터널과지하공간 (Tunnel and Underground Space)

  • 제22권5호
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  • Pages.330-338
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  • 2012
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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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임계지역 석회암의 일축압축강도와 점하중강도지수의 상관관계 연구

A Study on the Correlation between Uniaxial Compressive Strength and Point Load Strength Index of Limestone of Imgye Area

  • 김경만 (강원대학교 에너지.자원공학과 대학원) ;
  • 김대훈 (강원대학교 에너지.자원공학과 대학원) ;
  • 강중석 (한국지질자원연구원 광물자원연구본부) ;
  • 강상수 (한국지질자원연구원 광물자원연구본부) ;
  • 백환조 (강원대학교 에너지.자원공학과 대학원)
  • 투고 : 2012.09.20
  • 심사 : 2012.10.08
  • 발행 : 2012.10.31
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초록

일축압축강도(UCS)는 암석의 주요 물성 중 하나이다. 그러나 항상 UCS 실험을 위한 시료를 취득할 수는 없다. 이러한 경우 점하중시험과 같은 간접시험법이 유용한 대안이 될 수 있다. 본 연구에서는 임계지역에 분포하는 석회암을 대상으로 일축압축강도와 점하중강도지수 사이의 상관관계를 분석하였으며 선형 회귀식이 제안되었다. 또한 석회암을 대상으로 수행된 이전 연구결과와 이번 연구 결과를 비교하였다. 동일한 암종이라도 국내에서 분포하는 지역에 따라 변환계수가 다를 수 있으며, 분석의 정확성을 높이기 위해서는 더 많은 자료가 필요할 것으로 판단된다.

Though the uniaxial compressive strength (UCS) of rock material is one of the key properties for rockmass characterization purposes, core samples for the test cannot always be obtained from the field. Indirect tests such as the point load test (PLT) can be a useful alternative. In this study, correlation between the UCS and the point load strength index of limestone of Imgye area was analyzed, and the linear regression equation obtained from regression analysis of two variables was suggested. The results of this study were also compared with previous studies on limestone. It was suggested that conversion factors for the same rock type from diverse areas in Korea may have different values, and more data should be obtained to increase the accuracy of regression analysis.

키워드

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