Tunnel and Underground Space (터널과지하공간)

Korean Society for Rock Mechanics and Rock Engineering (한국암반공학회)
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A Case Study on the Cause Analysis of Subsidence in Limestone Mine Using LiDAR-Based Geometry Model

라이다 기반 정밀 형상 모델 활용 석회석 광산 지반침하 원인분석 사례연구

  • Hwicheol Ko (R&D Team 2, Korea Mine Rehabilitation and Mineral Resources Corp.) ;
  • Taewook Ha (Mine Training Center, Korea Mine Rehabilitation and Mineral Resources Corp.) ;
  • Sang Won Jeong (R&D Team 2, Korea Mine Rehabilitation and Mineral Resources Corp.) ;
  • Sunghyun Park (R&D Team 2, Korea Mine Rehabilitation and Mineral Resources Corp.) ;
  • Seung-tae Kim (R&D Team 2, Korea Mine Rehabilitation and Mineral Resources Corp.)
  • 고휘철 (한국광해광업공단 기술개발2팀) ;
  • 하태욱 (한국광해광업공단 마이닝센터) ;
  • 정상원 (한국광해광업공단 기술개발2팀) ;
  • 박승현 (한국광해광업공단 기술개발2팀) ;
  • 김승태 (한국광해광업공단 기술개발2팀)
  • Received : 2023.05.08
  • Accepted : 2023.06.07
  • Published : 2023.06.30
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Abstract

In this study, the cause of subsidence in limestone mine was analyzed using a LiDAR-based geometry model. Using UAV and ground-based LiDAR systems, a precise geometry model was constructed for the subsidence surface and mine tunnel, and the results of on-site geological survey and rock mass classification were utilized. Through the geometry model, distribution of thickness of crown pillar and faults around the subsidence area, calculation of the volume of the subsidence area and subsidence deposit, and analysis of the subsidence surface inclination were conducted. Through these analyzes, the causes of ground subsidence were identified.

본 연구에서는 석회석 광산에서 발생한 지반침하지에 대해 라이다 기반 정밀 형상 모델을 활용하여 침하 원인을 분석하였다. 드론 및 지상 기반 라이다 시스템을 활용하여 침하지 지표 및 갱도에 대한 정밀 형상 모델 구축을 수행하고 현장 지질조사 및 암반 분류 결과를 활용하였다, 정밀 형상 모델을 통해 침하지 주변부 크라운필러 두께 및 단층 분포, 침하지 및 침하 적치물 부피 계산, 침하 지표 경사 분석을 수행하였다. 이와 같은 분석을 통해 석회석 광산에서 발생한 지반침하 원인을 규명하였다.

Keywords

Acknowledgement

본 연구는 2022년도 한국광해광업공단 자체연구인 '지반침하 탐지 및 모니터링을 위한 라이다 복합센서 활용 드론 시스템 구축'(기술총서 2022-065)의 지원으로 수행되었습니다.

References

  1. Carter, T.G., 1992, A new approach to surface crown pillar design, Proc. 16th can., Rock Mecjanocs Symposium, Sudbury, pp. 75-83.
  2. Carter, T.G., Cottrell, B.E., Carvalho, J.L., and Steed, C.M., 2008, Logistic regression improvements to the Scaled Span method foe dimensioning surface crown pillars over civil or mining openings, 42nd US Rock Mechanics Symposium and 2nd US-Canada Rock mechanics Symposium, San Fransisco.
  3. Jang, M.H. and Lee. S.E., 2017, possibility and countermeasures of subsidence according to mining method and current status in the operating mines, Tunnel & Underground Space, 27(6), 366-376.
  4. KIGAM, 2022, Korea mineral information 2021.
  5. KOMIR, 2021, Service report for 3D surveying of remaining part and calculation of tunnel specification at the ○○ mine(in Korean).
  6. KOMIR, 2022a, Service report for subsidence restoration and mine tunnel safety assessment at the ○○ mine(in Korean).
  7. KOMIR, 2022b, Establishment of drone system using LiDAR complex sensor for mining-induced ground subsidence and monitoring, 38.
  8. KORES, 2018, Service report for designing mine transport shaft and establishing open-pit development plan of the ○○ mine(in Korean).
  9. KORES, 2019, Safety inspection service report for subsidence restoration at the ○○ mine(in Korean).
  10. KORES, 2020, Safety inspection service report for large-scale mining and thin crown pillar at the ○○ mine(in Korean).
  11. Lee, B.J., Park, S.W., Kim, D.H., and Song, Y.K., 2016, Ground subsidence caused by the development of underground karstic networks in limestone terrain, Tawbag city Korea, The Journal of Engineering Geology, 26(1), 63-70 https://doi.org/10.9720/KSEG.2016.1.63
  12. Lee, S.J., Kim, B.R., Choi, S.O., and Oh, S.H., 2015, A case study of site investigation and ground stability analysis for diagnosis of subsidence occurrence in limestone mine, Tunnel & Underground Space, 23(4), 332-340.
  13. MOTIE, 2016, A study on the establishment of safety countermeasures through ground subsidence investigations in underground mines, 134.
  14. NGI, 2022, Handbook : Using the Q-system.
  15. Oh, G.H., 2021, A study on the cause analysis and countermeasures for Large-scale ground subsidence case in limestone mine, Master thesis, Kangwon National University.
  16. Song, W, 2019, Status and prevention measures of ground subsidence in mine areas, Korean Soc. Miner. Energy Resour. Eng, 56(6), 676-687. https://doi.org/10.32390/ksmer.2019.56.6.676
  17. Suh, J.W. and Choi, Y.S., 2017, Mapping hazardous mining-induced sinkhole subsidence using unmanned aerial vehicle (drone) photogrammetry, Environ Earth Sci, 76, 144.
  18. Sunwoo, C., Song, W.K., Ryu, D.W., Rao, and Karanam, U.M., 2006, Causal analysis of subsidence and prediction of damage zone in an abandoned underground limestone mine, The Korean Society for Geosystem Engineering, 43(1), 1-12
  19. Whittaker, B.N. and Reddish, D.J., 1989, Subsidence:Occurrence, presiction and control, department of mining engineering, the University of Nottingham, United Kingdom.
  20. Zheng, J., Yao, W., Lin, X., Ma, B., and Li, B., 2022, An accurate digital subsidence model for deformation detection of coal mining areas using a UAV-based LiDAR, Remote Sens, 14, 421.