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Stability Assessment of Abandoned Gangway for Commercial Utilization of Services

서비스업 활용을 위한 광산 폐갱도의 안정성 평가

  • 선우춘 (한국지질자원연구원 지구환경연구본부) ;
  • 정소걸 (한국지질자원연구원 광물자원연구본부) ;
  • 이윤수 (경북대학교 지질학과 대학원) ;
  • 강상수 (한국지질자원연구원 광물자원연구본부) ;
  • 강중석 (한국지질자원연구원 광물자원연구본부)
  • Received : 2012.09.10
  • Accepted : 2012.09.28
  • Published : 2012.10.31

Abstract

The stability assessment of abandoned gangway for the purpose of services was performed. Among the many factors that affect the stability of openings, the span of the opening in a given rock mass condition provides an important element of design. In this paper, the stability of gangway was assessed by the critical span curves proposed by Lang, the modified Mathews'stability graph method and using support measures of the Q system. In the evaluation of stability as a whole the gangway is considered as stable. But the rockfalls of wedge-shaped blocks were expected in the area in which the horizontal joints of low angle appear. The support measures such as local rock bolts are required to use for commercial purposes of the abandoned gangway. And entrance section may require the particular attention as unstable section. Since there are so many spalling due to bad blasting in the roof and sidewall of gangway, the scaling operations should be followed primarily.

Keywords

Rock mass classification;Abandoned gangway;Stability of opening;Critical span curve;Mathews'stability graph

Acknowledgement

Grant : 녹색성장형 광산개발을 위한 시설물 갱내화 및 환경 모니터링 기술개발

Supported by : 한국지질자원연구원

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