Causal Analysis of Subsidence and Prediction of Damage Zone in an Abandoned Underground Limestone Mine

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2006 Vol.43, Issue 1 Next Page

Causal Analysis of Subsidence and Prediction of Damage Zone in an Abandoned Underground Limestone Mine D 석회석 폐광산의 지표침하 원인분석 및 예상위험구역 예측: 선우춘, 송원경, 류동우, U.M. Rao Karanam
SUNWOO Choon, SONG Won-Kyung, RYU Dong-Woo and U.M. Rao Karanam

28 February 2006. pp. 1-12

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Abstract

Surface damage due to subsidence is an inevitable consequence of underground mining, which may be immediate or delayed for many years. The stoping methods, such as sub-level caving and room-and-pillar mining provoke large scale damage at the surface. The surface damage due to an abandoned underground limestone mine is observed to be of different forms from simple sinkhole formation to a large scale sliding of the ground in the subsided area. For the prevention of damage, it is very important to predict an extent of ground movement. Therefore, in this study, the cause, extent and forms of subsidence have been analyzed and the mechanism of subsidence in the study area has also estimated based on the given information. In order to predict an extent of ground movement, a simple geometric model is assumed and the extent has been evaluated by the model. A hazard map of subsidence has been constructed by Monte Carlo simulation with considering uncertainties of the information.

Keywords

Subsidence

Limestone mine

Sublevel caving

Room-and-pillar

Sinkhole

Sliding

지표침하에 의한 지표면의 붕괴는 지하채광 후 바로 발생하거나 또는 상당한 시간이 흐른 다음에 발생하는 피할 수 없는 결과이다. 주방식 채광이나 중단붕락식과 같은 채광법들은 지표면에 큰 손상을 입힐 수 있다. 석회석 지하채굴의 폐광산에 의한 지표붕괴는 간단한 싱크홀 형태에서부터 지표침하지역내의 산사태형태까지 여러 형태의 지표면 붕괴가 관찰되고 있다. 침하로 인한 직·간접적 피해를 예방하기 위해 지표층의 거동 범위를 산정하는 것은 매우 중요한 문제이다. 따라서 본 연구에서는 지표침하의 원인, 크기 및 형태를 분석하고 이를 기초로 침하 발생 기구를 추정하였다. 또한, 침하 확대를 추정하기 위해 간단한 기하학적 설정에 기초한 모델을 구성하고, 제한된 정보들의 개연성을 고려하기 위해 Monte Carlo 시뮬레이션을 적용하여 연구 대상 지역의 침하 확대의 예상범위를 설정하여 위험도 지도를 작성하였다.

키워드

지표침하

석회석광산

중단붕락식

주방식

싱크홀

슬라이딩

References

광업진흥공사(KORES), 2002, 정밀조사보고서(석회석: 영월 -토교, 제천-두학지구), DS2002-LS(IV), 자원탐사처, p.115.
Bell F.G. and Stacey R., 1992, Subsidence in Rock Masses. Chap. 13, Engineering in Rock Masses, Butterworth-Heinemann.
Blyth F.G.H. and de Freitas M.H., 1990, A Geology for Engineers, Edward Arnold.
Church H.K. 1981, Excavation Handbook, McGraw-Hill International Book Company.
Matheson G.M. and Eckert-Clift A.D., 1986, Characteristics of chimney subsidence and sinkhole development from abandoned underground coal mines along the Colorado Front Range, Proceedings of the 2nd Workshop on Surface Subsidence due to Underground Mining, West-Virginia University, Morgantown, WV, pp.204- 214.
Piggott R.J. and Eynon P., 1977, Ground movements arising from the presence of shallow abandoned mine workings, Proceedings of the Conference on Large Ground Movements and Structures, UWIST, Cardiff, Geddes J.D.(ed), Pentech Press, pp.749-80.
Sowers G.F., 1976, Mechanisms of subsidence due to underground openings, in Subsidence over mines and caverns, moisture and frost actions, and classification: Washington, D.C., Transportation Research Board Record 612, National Academy of Science, pp.2-8.
Whittaker B.N., Reddish D.J., 1993, Subsidence Behaviour of Rock Structures, Chap. 28, Vol. 4, Comprehensive Rock Engineering. Pergamon Press.
Whittaker B.N. and Reddish, D.J., 1989, Subsidence-Occurrence, Prediction and Control, Elsevier, p.528.

Information

Publisher :The Korean Society of Mineral and Energy Resources Engineers
Publisher(Ko) :한국자원공학회
Journal Title :Journal of the Korean Society for Geosystem Engineering
Journal Title(Ko) :한국지구시스템공학회지
Volume : 43
No :1
Pages :1-12

[1] 광업진흥공사(KORES), 2002, 정밀조사보고서(석회석: 영월 -토교, 제천-두학지구), DS2002-LS(IV), 자원탐사처, p.115.

[2] Bell F.G. and Stacey R., 1992, Subsidence in Rock Masses. Chap. 13, Engineering in Rock Masses, Butterworth-Heinemann.

[3] Blyth F.G.H. and de Freitas M.H., 1990, A Geology for Engineers, Edward Arnold.

[4] Church H.K. 1981, Excavation Handbook, McGraw-Hill International Book Company.

[5] Matheson G.M. and Eckert-Clift A.D., 1986, Characteristics of chimney subsidence and sinkhole development from abandoned underground coal mines along the Colorado Front Range, Proceedings of the 2nd Workshop on Surface Subsidence due to Underground Mining, West-Virginia University, Morgantown, WV, pp.204- 214.

[6] Piggott R.J. and Eynon P., 1977, Ground movements arising from the presence of shallow abandoned mine workings, Proceedings of the Conference on Large Ground Movements and Structures, UWIST, Cardiff, Geddes J.D.(ed), Pentech Press, pp.749-80.

[7] Sowers G.F., 1976, Mechanisms of subsidence due to underground openings, in Subsidence over mines and caverns, moisture and frost actions, and classification: Washington, D.C., Transportation Research Board Record 612, National Academy of Science, pp.2-8.

[8] Whittaker B.N., Reddish D.J., 1993, Subsidence Behaviour of Rock Structures, Chap. 28, Vol. 4, Comprehensive Rock Engineering. Pergamon Press.

[9] Whittaker B.N. and Reddish, D.J., 1989, Subsidence-Occurrence, Prediction and Control, Elsevier, p.528.

Journal of the Korean Society of Mineral and Energy Resources Engineers ISSN:2288-0291(Print) 2288-2790(Online) 한국자원공학회지

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