Stability Evaluation of Large Underground Oil Storage Caverns in Over-stressed Rock Mass

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2005 Vol.42, Issue 4 Preview Page Next Page

Stability Evaluation of Large Underground Oil Storage Caverns in Over-stressed Rock Mass 과지압 암반 내 대규모 지하 유류비축기지 안정성 평가 사례: 최영태, 이대혁, 이희석, 박연준
Young-Tae Choi, Dae-Hyuck Lee, Hee-Suk Lee and Yeon-Jun Park

31 August 2005. pp. 330-344

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Abstract

Brittle failure such as popping and/or spalling was detected in an over-stressed rock mass during the construction of oil storage caverns, which has not yet been systematically reported in Korea. The in-situ stress as a cause and the mechanism of stress induced brittle failure of the site and resultant measurements are introduced. Various evaluation methods, and counter measures such as change of excavation shape and steel pipes with multi-staged grout are sought to stabilize the over-stressed rock mass. The major results from the numerical analysis of the cavern are presented.

Keywords

Oil storage cavern

Brittle failure

Over-stressed

유류비축 저장공동의 건설과정에서 암반파괴음과 암편탈락 현상이 발견되었다. 이러한 현상은 아직까지 우리나라에서 체계적으로 보고되지 않았던 현상으로서, 지압으로 유도된 이러한 취성파괴의 원인으로서 초기지압, 발생 메커니즘, 계측치 특징 등을 소개하였다. 또한 취성파괴의 원인을 파악하고 과지압 암반을 안정화시키기 위하여 본 저장공동에 적용한 여러 가지 대책공법들로서 굴착형상의 변경 및 강관다단그라우팅을 소개하였다. 대책공법의 검증을 위해 사용한 수치해석 주요 결과를 기술하였다.

키워드

유류저장공동

취성파괴

과지압

References

배성호, 전석원, 최용근, 김학수, 2002, “수압파쇄시험에 의한 산악지역에서의 현지암반 초기응력 측정 및 분포 특성 연구”, 한국터널공학회지 Vol. 4, No. 1, pp. 57∼70.
한국석유공사, SK건설(주), 수원대학교, 2004, “◯◯ 기지과지압구간 안정성 평가 검토보고서”.
한국지질자원연구원, 2003, “◯◯ 기지 초기응력 측정 연구”.
Hajiabdolmajid, V., Kaiser, P. K., Martin, C. D., 2002, “Modelling brittle failure of rock”, Int. J. Rock Mech. & Min. Sci., Vol. 39, pp. 731∼741.
Hoek, E., Brown E.T., 1980, Underground excavation in rock, Institute of Mining and Metallurgy, London.
Hoek, E, 2000, Rock Engineering Course Note by Evert Hoek, www.rockscience.com, pp. 161∼203.
Kaiser P.K., 1986, “Construction methods for large rock caverns Trends and Innovations, General Report”, Int. Symp. Large Rock Caverns, Finland, pp.1877-1907.
Kaiser P.K., Diederichs, M.S., Martin, C.D., Sharp, J., Steiner, W., 2000, “Underground works in hard rock tunnelling and mining”, GEOENG 2000, Nov. 19∼24, Melbourne, Australia, pp. 841∼926.
Kaiser, P.K., McCreath, D.R., Tannant, D.D., 1996, Canadian Rockburst Support Handbook, Geomechanics Research Centre, Laurentian University, Sudbury, Canada, 314p.
Martin C. D., 1997, “The effect of cohesion loss and stress path on brittle rock strength”, Canadian Geotechnical Journal Vol. 34, pp.698-725.
Martin, C.D., Chandler, N.A., 1994, “The progressive fracture of Lac du Bonnet granite”, International Journal of Rock Mechanics Mining Science & Geomechanics Abstracts, Vol. 31, No. 6, pp. 643∼659.
Martin, C.D., Kaiser, P.K., McCreath, D.R., 1999, “Hoek-Brown parameters for predicting the depth of brittle failure around tunnels”, Canadian Geotechnical Journal, Vol. 36, No. 1, pp 136-151.
Palmstrom, A. 2000, “Recent developments in rock support estimates by the RMi”, Journal of Rock Mechanics and Tunnelling Technology, Vol. 6, No. 1, pp. 1∼19.
Wiseman, N. 1979, “Factors affecting the design and condition of mine tunnels”, Reserach Report No. 45/79, Chamber of Mines of South Africa, Pretoria, South Africa, p.22.

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 : 42
No :4
Pages :330-344

[1] 배성호, 전석원, 최용근, 김학수, 2002, “수압파쇄시험에 의한 산악지역에서의 현지암반 초기응력 측정 및 분포 특성 연구”, 한국터널공학회지 Vol. 4, No. 1, pp. 57∼70.

[2] 한국석유공사, SK건설(주), 수원대학교, 2004, “◯◯ 기지과지압구간 안정성 평가 검토보고서”.

[3] 한국지질자원연구원, 2003, “◯◯ 기지 초기응력 측정 연구”.

[4] Hajiabdolmajid, V., Kaiser, P. K., Martin, C. D., 2002, “Modelling brittle failure of rock”, Int. J. Rock Mech. & Min. Sci., Vol. 39, pp. 731∼741.

[5] Hoek, E., Brown E.T., 1980, Underground excavation in rock, Institute of Mining and Metallurgy, London.

[6] Hoek, E, 2000, Rock Engineering Course Note by Evert Hoek, www.rockscience.com, pp. 161∼203.

[7] Kaiser P.K., 1986, “Construction methods for large rock caverns Trends and Innovations, General Report”, Int. Symp. Large Rock Caverns, Finland, pp.1877-1907.

[8] Kaiser P.K., Diederichs, M.S., Martin, C.D., Sharp, J., Steiner, W., 2000, “Underground works in hard rock tunnelling and mining”, GEOENG 2000, Nov. 19∼24, Melbourne, Australia, pp. 841∼926.

[9] Kaiser, P.K., McCreath, D.R., Tannant, D.D., 1996, Canadian Rockburst Support Handbook, Geomechanics Research Centre, Laurentian University, Sudbury, Canada, 314p.

[10] Martin C. D., 1997, “The effect of cohesion loss and stress path on brittle rock strength”, Canadian Geotechnical Journal Vol. 34, pp.698-725.

[11] Martin, C.D., Chandler, N.A., 1994, “The progressive fracture of Lac du Bonnet granite”, International Journal of Rock Mechanics Mining Science & Geomechanics Abstracts, Vol. 31, No. 6, pp. 643∼659.

[12] Martin, C.D., Kaiser, P.K., McCreath, D.R., 1999, “Hoek-Brown parameters for predicting the depth of brittle failure around tunnels”, Canadian Geotechnical Journal, Vol. 36, No. 1, pp 136-151.

[13] Palmstrom, A. 2000, “Recent developments in rock support estimates by the RMi”, Journal of Rock Mechanics and Tunnelling Technology, Vol. 6, No. 1, pp. 1∼19.

[14] Wiseman, N. 1979, “Factors affecting the design and condition of mine tunnels”, Reserach Report No. 45/79, Chamber of Mines of South Africa, Pretoria, South Africa, p.22.

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

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