Development of Mine Subsidence Hazard Estimation Method through the Analysis of Influential Factors on Subsidence

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2010 Vol.47, Issue 3 Preview Page Next Page

Development of Mine Subsidence Hazard Estimation Method through the Analysis of Influential Factors on Subsidence 지반침하영향인자 분석을 통한 광산지역 지반침하 위험도 평가법 개발: 정용복, 김태혁, 송원경, 최광수, 권현호
Yong-Bok Jung, Tae-Heok Kim, Won-Kyong Song, Gwang-Su Choi and Hyun-Ho Kwon

30 June 2010. pp. 324-338

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Abstract

Since ground subsidences in waste mine regions occur generally as a residual movement after a long time after mine operation has been ceased, it is difficult to predict precisely the time and the location of subsidence. For this reason, It is strongly required to make a database of subsidence events and to establish a quantitative hazard assessment method for effective and economical management of subsidence problems. In this paper, a new method to assess subsidence hazard quantitatively over old mine areas was developed through compilation and analysis of research articles, documented survey records of Korean coal mine subsidence, results of numerical analyses and physical model experiments. The validation of this method was carried out using 53 previous case records and 2 field survey data. The accuracy of this method was about 85% but further validation using stable cases over mining area is required for an improvement and field applications.

Keywords

Mining subsidence

Coal mine

Quantitative hazard assessment

AHP (Analytic Hierarchy Process)

우리나라의 경우 폐광지역에서 발생하는 침하는 가행 중단 후 오랜 시간이 지나서 발생하는 잔류성 침하가 대부분으로서 발생위치와 시기를 정확히 예측하기는 어렵다. 따라서 효율적이며 경제적인 침하 문제 관리를 위한 침하 데이터베이스 구축과 폐광으로 인한 지반침하 우려지역에 대한 구체적이며 정량적인 암반평가 및 안정성 평가기법의 수립과 이를 통한 전체 폐광지역에 대한 안정성 평가가 절실히 요구된다. 본 연구에서는 기존문헌 및 침하조사보고서 조사, 수치해석과 모형실험 결과를 종합하여 침하위험도의 정량적 평가법을 개발하였다. 개발된 평가법은 53개의 기존 침하사례와 2건의 현장조사 사례를 사용하여 검증을 하였으며 85%의 정확도를 가지는 것으로 나타났으나 침하사례 외에 채굴적이 존재하나 안정한 경우의 자료 등을 통한 추가적인 검증이 필요한 것으로 판단된다.

키워드

광산지반침하

석탄광

정량적 위험도 평가법

AHP(Analytic Hierarchy Process)

References

김종우, 송원경, 장경택, 2007, 지하갱도가 지반침하에 미치는 영향에 관한 실험적 연구, 한국지구시스템공학회지, Vol. 44, No. 3, pp. 208-217.
방기문, 2004, 태백 적각지역 지반안정성 정밀조사, 2004 IDER Symposium, pp. 51-73.
최성웅, 신희순, D. Deb., 2005, 퍼지추론기법을 이용한 폐광산 지역에서의 싱크홀 발생가능성 예측기법 연구, 지반침하 조사,설계,시공에 관한 심포지엄, pp. 113-125.
한국광해관리공단, 2008, 한국형광산지역 지반침하의 안정성 평가기법 및 S/W 개발, p. 158.
Ambrozic, T. and Turk, G., 2003, Prediction of subsidence due to underground mining by artificial neural networks, Computers & Geosciences 29(5). pp. 627-637.
Broch, E., 1979, Changes in rock strength by water, Proceedings of the IV. International Society of Rock Mechanics, Montreux, 1, pp. 71-75.
Bruhn, R.W., Magnuson, M.O. and Gray, R.E., 1978, Subsidence over the Mined out Coal, ASCE Preprint 3293, American Society of Civil Engineers Spring Convention, Pittsburgh, pp. 26-55.
Colback, P.S. and Wiid, B.S., 1965, The influence of moisture content on the compressive strength of rocks, Proceedings of the 3rd Canadian Symposium on Rock Mechanics, Toronto (Canada), pp. 65-83.
Esaki, T., Kimura, T. and Shikata, K., 1989, Subsidence and environmental impacts in Japanese coal mining, Proceedings of the 30th US Symposium on Rock Mechanics as a Guide for Efficient Utilization of Natural Resources, West Virginia University, pp. 511-518.
Hawkins, A.B. and McConnel, B.J., 1992, Sensitivity of sandstone strength and deformability to changes in moisture content, Journal of Engineering Geology, 25, pp. 115-130.
Karfakis, M. G., 1993, Residual subsidence over abandoned coal mines, in Comprehensive rock engineering, Vol. 5, Surface and underground project case histories, Pergamon Press, Oxford, pp. 451-476.
Li, Z., Sheng, Y., and Reddish, D.J., 2005, Rock strength reduction and its potential environmental consequence as a result of groundwater rebound, 9th International Mine Water Congress, pp. 513-519.
Matheson, G.M. and Eckert-Clift, A.D., 1986, Characteristics of chimney subsidence and sink hole 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.
Rick Ruegsegger, 1998, Manual for Abandoned Underground Mine Inventory and Risk Assessment, US DOT Federal Highway Administration, FHWA-IF-99-007.
Singh, B. K. and Dhar, B. B., 1997, Sinkhole subsidence due to mining, Geotechnical & Geologica Engineering, 1997, 15, pp. 327-341.
Statham, I. and Treharne, G., 1991, Subsidence due to abandoned mining in the South Wales Coalfield, UK: Causes and Mechanisms and Environmental Risk Assessment, Proceedings of the 4th International Symposium on Land Subsidence, IAHS Publication No. 200, pp. 143-152.
Van Eeckhout, E.M., 1976, The mechanism of strength reduction due to moisture in coal mine shales, International Journal of Rock Mechanics, Mining Sciencs & Geomechanical Abstract, 13(2), pp. 61-67.
Whittaker, B. N. and Reddish, D. J., 1989, Subsidence : Occurrence, Prediction and Control, Elsevier, New York, pp. 315-395.

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 : 47
No :3
Pages :324-338

[1] 김종우, 송원경, 장경택, 2007, 지하갱도가 지반침하에 미치는 영향에 관한 실험적 연구, 한국지구시스템공학회지, Vol. 44, No. 3, pp. 208-217.

[2] 방기문, 2004, 태백 적각지역 지반안정성 정밀조사, 2004 IDER Symposium, pp. 51-73.

[3] 최성웅, 신희순, D. Deb., 2005, 퍼지추론기법을 이용한 폐광산 지역에서의 싱크홀 발생가능성 예측기법 연구, 지반침하 조사,설계,시공에 관한 심포지엄, pp. 113-125.

[4] 한국광해관리공단, 2008, 한국형광산지역 지반침하의 안정성 평가기법 및 S/W 개발, p. 158.

[5] Ambrozic, T. and Turk, G., 2003, Prediction of subsidence due to underground mining by artificial neural networks, Computers & Geosciences 29(5). pp. 627-637.

[6] Broch, E., 1979, Changes in rock strength by water, Proceedings of the IV. International Society of Rock Mechanics, Montreux, 1, pp. 71-75.

[7] Bruhn, R.W., Magnuson, M.O. and Gray, R.E., 1978, Subsidence over the Mined out Coal, ASCE Preprint 3293, American Society of Civil Engineers Spring Convention, Pittsburgh, pp. 26-55.

[8] Colback, P.S. and Wiid, B.S., 1965, The influence of moisture content on the compressive strength of rocks, Proceedings of the 3rd Canadian Symposium on Rock Mechanics, Toronto (Canada), pp. 65-83.

[9] Esaki, T., Kimura, T. and Shikata, K., 1989, Subsidence and environmental impacts in Japanese coal mining, Proceedings of the 30th US Symposium on Rock Mechanics as a Guide for Efficient Utilization of Natural Resources, West Virginia University, pp. 511-518.

[10] Hawkins, A.B. and McConnel, B.J., 1992, Sensitivity of sandstone strength and deformability to changes in moisture content, Journal of Engineering Geology, 25, pp. 115-130.

[11] Karfakis, M. G., 1993, Residual subsidence over abandoned coal mines, in Comprehensive rock engineering, Vol. 5, Surface and underground project case histories, Pergamon Press, Oxford, pp. 451-476.

[12] Li, Z., Sheng, Y., and Reddish, D.J., 2005, Rock strength reduction and its potential environmental consequence as a result of groundwater rebound, 9th International Mine Water Congress, pp. 513-519.

[13] Matheson, G.M. and Eckert-Clift, A.D., 1986, Characteristics of chimney subsidence and sink hole 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.

[14] Rick Ruegsegger, 1998, Manual for Abandoned Underground Mine Inventory and Risk Assessment, US DOT Federal Highway Administration, FHWA-IF-99-007.

[15] Singh, B. K. and Dhar, B. B., 1997, Sinkhole subsidence due to mining, Geotechnical & Geologica Engineering, 1997, 15, pp. 327-341.

[16] Statham, I. and Treharne, G., 1991, Subsidence due to abandoned mining in the South Wales Coalfield, UK: Causes and Mechanisms and Environmental Risk Assessment, Proceedings of the 4th International Symposium on Land Subsidence, IAHS Publication No. 200, pp. 143-152.

[17] Van Eeckhout, E.M., 1976, The mechanism of strength reduction due to moisture in coal mine shales, International Journal of Rock Mechanics, Mining Sciencs & Geomechanical Abstract, 13(2), pp. 61-67.

[18] Whittaker, B. N. and Reddish, D. J., 1989, Subsidence : Occurrence, Prediction and Control, Elsevier, New York, pp. 315-395.

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

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