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The Mechanical Properties of Limestones Distributed in Jecheon

제천지역 석회암의 역학적 특성에 관한 연구

  • 김종우 (청주대학교 토목공학과) ;
  • 김민식 (청주대학교 토목환경공학과) ;
  • 김평기 (청주대학교 토목환경공학과) ;
  • 노승재 (청주대학교 토목환경공학과) ;
  • 박찬 (한국지질자원연구원 지구환경연구본부) ;
  • 조영도 (한국지질자원연구원 광물자원본부 자원탐사개발연구실) ;
  • 박삼규 (한국지질자원연구원 광물자원본부 자원탐사개발연구실)
  • Received : 2012.10.21
  • Accepted : 2012.10.24
  • Published : 2012.10.31

Abstract

In order to evaluate the physical properties of rock which might serve as a database for both mining and civil works, a lot of laboratory tests for Jecheon limestones were conducted to find unit weight, absorption ratio, porosity, elastic wave velocity, uniaxial compressive strength, Young's modulus, poisson's ratio, tensile strength, shore hardness, friction angle and cohesion. On investigation of the mechanical properties of both the gray limestone and the clayey limestone distributed in the studied region, the clayey limestone turned out to have more weak mechanical properties which might come from low unit weight, high absorption ratio and high porosity of rocks. The failure criteria of Jecheon limestones were discussed by means of both Mohr-Coulomb criterion and Hoek-Brown criterion. Regression analyses of the physical properties obtained from a lot of laboratory tests were also conducted by means of both linear and multiple regression analyses.

본 연구에서는 석회암 지반에서 광산개발이나 토목공사를 수행할 때 데이터베이스로 활용될 수 있는 암석의 기초 물성들을 파악하기 위하여, 제천지역 석회암을 대상으로 수많은 실내 역학시험을 실시하여 암석의 단위중량, 흡수율, 간극률, 탄성파 속도, 쇼어경도, 일축압축강도, 인장강도, 영률, 포와송비, 점착력, 내부마찰각 등의 각종 물리적 성질을 조사하였다. 연구 지역에 분포하는 회색석회암과 이질석회암의 역학적 특성을 비교 검토하였으며, 이질석회암은 회색석회암에 비하여 단위중량은 작고 간극률과 흡수율은 크게 나타나 각종 역학적 특성은 상대적으로 작게 평가되었다. 또한 Mohr-Coulomb 파괴기준과 Hoek-Brown 파괴기준을 적용하여 제천 석회암의 파괴조건을 해석하였으며, 여러 가지 물성간의 단순회귀분석과 다중회귀분석을 통해 물성 상호간의 관련성을 알아보았다.

Keywords

References

  1. The Korean Earth Science Society, 2009, Dictionary of Earth Science, Bookshill.
  2. Yeonghwa Kim, Kiju Kim, 1999, Comparison physical prorerties obtained from geophysical well log and core property measurements in Gabsan formation, The Journal of Engineering Geology, 9, 253-265.
  3. Jun-Seob Yeom, Jae-Young Kim, Jae-Woo Choi, 2010, A case study on the investigation of cavity and weak zone in limestone area, KSEG Conference, Gyeongju, Korea, 177-182.
  4. Hwang, In-Baek, Choo, Jin-Ho, 2006, Case study of precision safety diagnosis of OOtunnel in limestone area, J. of Korea institute for Structural Maintenance Inspection, 10.1, 57-61.
  5. Seokwom Jeon, Changwoo Hong, Jongwoo Kim and Youngkeun Kim, 2002, Effect of Karstic Lime Caverns on the Stability of Tunnels - A Scaled Model test, Proc. of ISRM Regional Symp., Seoul, Korea, 503-509.
  6. Soo-Been Im, Sun-Jae Lee, Ji-Son Yoon, Sung-Hwan Kim, Young-Ho Park, 1998, Deformation modulus of limesones distributed in Je-chon, 1998 National Conference, Korean Geotechnical Society, Seoul, Korea, 49-56.
  7. Choon Sunwoo, Karanam U. M. Rao, So-Keul Chung and Yang-Soo Jeon, 2004, A Study on the characteristics of rock mass by GSI in limestone mine, Tunnel and Underground Space, 14.2, 86-96.
  8. Yong-Kyun Yoon and Hong-Woo Lee, 2007, Evaluation the stability of large-scale gangways mined in a limestone mine using rock classification schemes, Tunnel and Underground Space, 17.6, 503-510.
  9. Han-Uk Lim, Jae-Dong Kim and Hwan-jo Baek, 2000, A study on the mining method for limestone mines with less enviromentral hazards, Tunnel and Underground Space, 10, 80-91.
  10. Han-Uk Lim, Chi-Hwan Kim and Hwan-Jo Baek, 2001, Stability analysis of rock slope in limestone mine by numerical analysis, Tunnel and Underground Space, 11.3, 270-278.
  11. Hee-Soon Shin, Choon Sunwoo, Kong-Chang Han and Yeon-jun Park, 1996, Study on the stability of tunnel and rock mass classification in Danyang limeston quarry, Tunnel and Underground Space, 6, 131-143.
  12. Yeon-Ho Won, Choo-Won Kang, Jong-In Kim and Hyeon-Sik Park, 2004, Characteristics of physical properties of rocks and their mutual relations, Tunnel and Underground Space, 14.4, 261-268.
  13. YongKyun Yoon, Youngjun Baek, Youngdo Jo, 2011, Effects of temperature and water pressure on the material properties of granite & limestone from Gagok mine, Tunnel and Underground Space, 21.1, 33-40.
  14. Sang-eun Lee, Yoon-ho Jang, 2010, Stability assesment of the slope at the disposal site of waste rock in limestone mine, Tunnel and Underground Space, 20.6, 475-490.
  15. Jong-Gwan Kim, Hyung-Sik Yang, Won-Beom Kim, young-Hwan Jang, Tae-Wook Ha, 2010, Stability analysis on the crushing facility space in mine tunnel, Tunnel and Underground Space, 20.3, 145-152.
  16. Lee, C.I., Lee H.K., Ryu, C.H., Yang, H.S., 1982, A study on the Mechanical properties of major rocks distributed in Korea(1st Report), 19, 260-267.
  17. Lee H.K., Lee, C.I., Yang, H.S., 1983, A study on the Mechanical properties of major rocks distributed in Korea(2nd Report), 20, 101-109.
  18. Jeoung-Bae Jee, Jong-Woo Kim, 1997, The Mechanical Properties and its Correlation of Granite at Doon-Nae in Gang-Won District, J. of Industrial Science Research Institute, Cheongju Univ., 15.2, 195-202.
  19. Chan Park, Dae-sung Cheon, Yong-Bok Jung, Won-Kyoung Song, Choon Sunwoo, Bok-Chul Kim, 2008, Mechanical properties of rocks in Dokdo, Tunnel and Underground Space, 18.1, 69-79.
  20. Jong-Suok Lee, Jong-Kyu Moon, Woong-Eui Choi, 2011, Analysis of correlation between velocity of elastic wave and mechanical properties of rocks, Tunnel and Underground Space, 21.2, 50-65.
  21. Korean Society for Rock Mechanics, 2005, Standard method for sampling and preparation of rock test specimen, Tunnel and Underground Space, 15.2, 81-84.
  22. Korean Society for Rock Mechanics, 2005, Standard test method for uniaxial compressive strength of rock, Tunnel and Underground Space.
  23. Korean Society for Rock Mechanics, 2006, Standard test method for indirect tensile strength of rock by the Brazilian test, Tunnel and Underground Space, 16.4, 279- 280.
  24. Korean Society for Rock Mechanics, 2006, Standard test method for triaxial compression of rock, Tunnel and Underground Space, 16.6, 433-436.
  25. Hoek, E. and Brown, E.T., 1997, practical estimates of rock mass strength, Int. J. of Rock Mech. Min. Sci. 34, 1165-1186. https://doi.org/10.1016/S1365-1609(97)80069-X

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