Evaluating the Stability of Large-scale Gangways Mined in a Limestone Mine Using Rock Classification Schemes

암반분류법을 이용한 석회석 광산 내 대규격 갱도의 안정성 평가

  • 윤용균 (세명대학교 자원환경공학과) ;
  • 이홍우 (세명대학교 대학원 환경안전시스템공학과)
  • Published : 2007.12.31


Rock classification schemes such as RMR, Q-system were applied to investigate the stability of large-scale gangways mined in a limestone mine. 22 areas for engineering geological surveys were selected and rock classifications at each survey point had been carried out. Considering the fact that the observed gangways have not experienced some severe failure and have been stably maintained till now, it is found that Q-system is more reasonable than RMR in evaluating the stability of unsupported span. Also, extended Mathews stability graph method which is a kind of revised Q-system was used to assess the stability of gangways and the results represent that all gangways except for one area are under stable condition. Based on above the mentioned results, the empirical equations to design the maximum unsupported span and critical height of a large-scale gangway are suggested.


  1. 산업자원부, 2006, 2005년도 광산물 수급현황, 산업자원부, 331p
  2. 선우춘, 정용복, 2005, Stability graph method에 의한 석회석 지하채굴 공동의 안정성 평가, 터널과 지하공간(한국암반공학회지) 15.5, 369-377
  3. 선우춘, 정소걸, 최성웅, 정용복, 전양수, 이상권, 2005, 석회석 광산 갱내 채광장 및 갱도의 안전유지 기술연구, 산업자원부, 150p
  4. Hoek, E., P.K. Kaiser and W.F. Bawden., 1995, Support of underground excavations in hard rock, Balkema, 215p
  5. Mawdesley, C., R. Trueman and W.J. Whiten, 2001, Extending the Mathews stability graph for open-stope design, Trans. Instn Min. Metall. 110.1, A27-A39
  6. Milne, D., J. Hadjigeorgiou and R. Pakalnis, 1998, Rock mass characterization for underground hard rock mines, Tunnelling and Underground Space Technology 13.4, 383 -391 https://doi.org/10.1016/S0886-7798(98)00081-9
  7. Potvin, Y., M.R. Hudyma and H.D.S Miller, 1989, Design guidelines for open stope support, CIM Bull. 82. 926, 53-62
  8. Stewart, S.B.V. and W.W. Forsyth, 1995, The Mathew's method for open stope design, CIM Bull. 88.992, 45-53