Tunnel and Underground Space (터널과지하공간)

Korean Society for Rock Mechanics and Rock Engineering (한국암반공학회)
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A Suggestion of Rock Mass Classification Systems for Stability of Underground Limestone Mines - A Case Study

석회석 광산의 지하갱도 안정성평가를 위한 암반분류법 개발

  • Karanam U. M. Rao (Korea Institute of Geosciences and Mineral Resources) ;
  • Choon Sunwoo (Korea Institute of Geosciences and Mineral Resources) ;
  • Chuug, So-Keul (Korea Institute of Geosciences and Mineral Resources) ;
  • Park, Sung-Oong (Korea Institute of Geosciences and Mineral Resources) ;
  • Jeon, Yang-Soo (Korea Institute of Geosciences and Mineral Resources)
  • Published : 2003.12.01
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Abstract

Demand for limestone production from both the underground and opencast mines in Korea is gradually increasing. Increase in productivity with safe mining operations is the emphasis laid on the mining industry. KIGAM has undertaken a detailed investigation to apply RMR and Q classification system for the design of underground limestone mining operations. The field investigations were confined to the underground mines of Daesung Mining Development Co. Ltd. and Pyunghae Mines of Korean Airport Service. Modification to the standard RMR and Q for limestone mines in Korea along with the correlation between these two systems are discussed while attempts were also made to calculate the width of a safe unsupported span.

자원개발에 있어서 환경문제로 석회석광산의 채굴이 노천에서 지하채굴로 점차 전환되면서 석회석 채광에 따르는 갱도의 안전문제가 대두되고 있다. 무지보로 유지해야 하는 갱도의 크기문제를 결정하는 것이 현장에서 가장 어려 문제중의 하나이다. 따라서 석회석 지하채광장과 갱도에서 Q시스템과 RMR 암반분류법을 적용하여 지하갱도의 안전성을 평가하기 위한 암반분류법을 개발하기 위해서 두 개의 석회석 광산을 대상으로 암반조사가 이루어 졌다. 기본적으로 Q 시스템과 RMR 암반분류법의 상관관계를 이용하여, 석회석 광산에 적용할 수 있도록 암반분류법을 수정하였고 또한 무지보 안전갱도 폭을 결정하기 위한 새로운 시도가 이루어 졌다.

Keywords

References

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