A Case Study on the Cause Analysis of Subsidence in Limestone Mine Using LiDAR-Based Geometry Model

Hwicheol Ko; Taewook Ha; Sang Won Jeong; Sunghyun Park; Seung-tae Kim

doi:10.7474/TUS.2023.33.3.126

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2023 Vol.33, Issue 3 Preview Page Next Page

Case Study

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

30 June 2023. pp. 126-140

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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.

Keywords

LiDAR

Mining-induced subsidence

Ground subsidence cause analysis

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.

키워드

라이다

광산 지반침하

지반침하 원인분석

References

Carter, T.G., 1992, A new approach to surface crown pillar design, Proc. 16^th can., Rock Mecjanocs Symposium, Sudbury, pp. 75-83.

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, 42^nd US Rock Mechanics Symposium and 2^nd US-Canada Rock mechanics Symposium, San Fransisco.

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.

KIGAM, 2022, Korea mineral information 2021.

KOMIR, 2021, Service report for 3D surveying of remaining part and calculation of tunnel specification at the ○○ mine(in Korean).

KOMIR, 2022a, Service report for subsidence restoration and mine tunnel safety assessment at the ○○ mine(in Korean).

KOMIR, 2022b, Establishment of drone system using LiDAR complex sensor for mining-induced ground subsidence and monitoring, 38.

KORES, 2018, Service report for designing mine transport shaft and establishing open-pit development plan of the ○○ mine(in Korean).

KORES, 2019, Safety inspection service report for subsidence restoration at the ○○ mine(in Korean).

KORES, 2020, Safety inspection service report for large-scale mining and thin crown pillar at the ○○ mine(in Korean).

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 10.9720/kseg.2016.1.63

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. 10.7474/TUS.2015.25.4.332

MOTIE, 2016, A study on the establishment of safety countermeasures through ground subsidence investigations in underground mines, 134.

NGI, 2022, Handbook : Using the Q-system.

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.

Song, W, 2019, Status and prevention measures of ground subsidence in mine areas, Korean Soc. Miner. Energy Resour. Eng, 56(6), 676-687. 10.32390/ksmer.2019.56.6.676

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. 10.1007/s12665-017-6458-3

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

Whittaker, B.N. and Reddish, D.J., 1989, Subsidence:Occurrence, presiction and control, department of mining engineering, the University of Nottingham, United Kingdom.

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. 10.3390/rs14020421

Information

Publisher :Korean Society for Rock Mechanics and Rock Engineering
Publisher(Ko) :한국암반공학회
Journal Title :Tunnel and Underground Space
Journal Title(Ko) :터널과 지하공간
Volume : 33
No :3
Pages :126-140
Received Date : 2023-05-08
Revised Date : 2023-05-31
Accepted Date : 2023-06-07
DOI :https://doi.org/10.7474/TUS.2023.33.3.126

Tunnel and Underground SpaceISSN:1225-1275(Print) 2287-1748(Online)한국암반공학회

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