Tunnel and Underground Space (터널과지하공간)

Korean Society for Rock Mechanics and Rock Engineering (한국암반공학회)
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Variation of Thermal and Mechanical Properties of Crystalline Granite under Saturated-Loading Condition

침수-하중 조건에서의 결정질 화강암의 열적, 역학적 물성 변화

  • 허진 (인하대학교 에너지자원공학과) ;
  • 이재철 (인하대학교 에너지자원공학과) ;
  • 서정범 (인하대학교 에너지자원공학과) ;
  • 박승훈 (인하대학교 에너지자원공학과) ;
  • 박정찬 (인하대학교 에너지자원공학과) ;
  • 권상기 (인하대학교 에너지자원공학과)
  • Received : 2014.06.19
  • Accepted : 2014.06.27
  • Published : 2014.06.30
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Abstract

It is well known that rock properties can be affected by loading in underground condition. In the case of flooded underground mine or tunnels, rock properties variation due to loading might be different from the loading in dry condition. In order to verify the influence of saturated loading condition on rock properties, various laboratory tests had been carried out. Loading on the rock specimen was controlled to be ranged in between 20 ~ 80% of UCS. By comparing the variation of thermal, mechanical, and physical properties of rock specimens under the same load in saturated and dry condition, it was possible to find that the rock properties can be more significantly disturbed in the saturated loading condition than in dry loading condition.

지하 하중 조건에서 암석물성이 변한다는 것은 잘 알려져 있다. 따라서 침수상태에 놓인 폐광산이나 폐공동에서의 하중에 따른 암석 물성변화와 일반적인 건조상태의 하중에 따른 물성 변화와의 관계에 대하여는 연구가 필요하다. 침수-하중 조건에서의 암석 물성 변화를 파악하기 위해 다양한 실험실 실험이 실시되었다. 암석에 가해지는 하중은 단축압축강도의 20~80%로 조절하였다. 침수 및 건조 조건에서 동일한 하중을 가할 경우 발생하는 암석의 열적, 역학적, 물리적 물성 변화를 비교함으로써 건조조건에 비해 침수조건에서의 물성변화가 더 크게 일어남을 알 수 있었다.

Keywords

References

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