Tunnel and Underground Space (터널과지하공간)

Korean Society for Rock Mechanics and Rock Engineering (한국암반공학회)
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A Study on Relationship Between Basic Frictional Angle and Mineral Composition for Granite Sample

화강암 시험편의 광물조성과 기본마찰각의 상관성에 관한 연구

  • 이봉현 (강원대학교 에너지.자원공학과 대학원) ;
  • 이승중 (강원대학교 에너지.자원공학과 대학원) ;
  • 최성웅 (강원대학교 공과대학 에너지.자원공학과 대학원)
  • Received : 2013.11.06
  • Accepted : 2013.12.23
  • Published : 2014.02.28
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Abstract

Basic frictional angle is a parameter that can estimate shear strength of rock, and is a design parameter employed in slope stability analysis. Basic frictional angle generates various results in accordance with mineral composition, apart from rock surface roughness itself. This paper describes the correlation of basic frictional angle and mineral composition. The basic frictional angle is measured with the aid of the modified tilt testing apparatus, and its reliability is improved by the statistical method. Also, mineral composition is identified through the photographic analysis on rock specimen, and verified through the thin section analysis.

기본마찰각은 전단강도를 추정할 수 있는 매개변수로, 사면의 안정성 해석 등에 이용되는 설계정수이다. 이러한 기본마찰각은 암석 표면의 거칠기 외에도 광물조성에 따라 다른 결과값을 갖는다. 이에 본 연구에서는 기본마찰각과 표면 광물조성이 갖는 상관성에 대해 살펴보았다. 기본마찰각의 측정은 기존 기울기 시험을 수정, 보완하여 수행하였으며 통계적인 기법으로 신뢰성을 확보하였다. 또한 시료의 사진 분석을 통하여 광물의 조성을 확인하였으며, 박편사진을 이용한 검증을 수행하였다.

Keywords

References

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Cited by

  1. Determination of the Basic Friction Angle of Rock Surfaces by Tilt Tests pp.1434-453X, 2017, https://doi.org/10.1007/s00603-017-1388-7
  2. Experimental Study of Factors Controlling Tilt-Test Results Performed on Saw-Cut Rock Joints vol.42, pp.2, 2018, https://doi.org/10.1520/GTJ20170375