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A Study on Stability Analysis of Large Underground Limestone Openings considering Excavation Damaged Zone

굴착손상영역을 고려한 대형 석회석 갱내채광장의 안정성 분석 연구

Kwon, Min-Hyuk;Choi, Sung-Oong;Kim, Chang-Oh
권민혁;최성웅;김창오

  • Received : 2016.04.12
  • Accepted : 2016.04.26
  • Published : 2016.04.30

Abstract

Investigation for rock joints, inspection for rock core, and laboratory tests for rock specimens, in this study, have been performed for identification of the extent and properties of Excavation Damaged Zone in a underground limestone mine, which plans to enlarge the size of openings to improve the production rate. Properties of EDZ and surrounding rock masses have been used numerically for discontinuum analysis, and it is concluded that the effect of EDZ can be increased with increasing the opening size and a blasting pattern of high precision can be suggested for the counterplan.

Keywords

Excavation Damaged Zone;Production rate;Discontinuum analysis

References

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Acknowledgement

Grant : 국내 석회석광 적용 자동차 경량화 광물 원료 등 미래 자원화 기술 실증화 연구

Supported by : 산업통상자원부