Investigation of Rock Failure under Uniaxial Loading Using Thermal Infrared Image

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2010 Vol.47, Issue 4 Preview Page Next Page

Investigation of Rock Failure under Uniaxial Loading Using Thermal Infrared Image 열적외선 영상을 이용한 암석의 일축압축파괴 특성 연구: 현창욱, 박지환, 박형동
Chang-Uk Hyun, Ji-Hwan Park and Hyeong-Dong Park

31 August 2010. pp. 505-514

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Abstract

Strain energy accumulated in the rock specimen during uniaxial compressive test is emitted as various forms such as light, sound and heat. Thermal infrared camera was applied to detect the increase of temperature and the distribution of thermal abnormalities at the three phases of rock failure, before, at the moment, and after failure, for the granite, diorite, basalt and tuff specimens obtained in Korea. Precursor of the fracture before the failure was detected with increase of temperature on the surface of specimen, and from this, occurrence of the fracturing is predictable. At the moment of the failure, temperature of fracturing surface increased because of energy concentration and fraction during breakaway of the inclined fracturing surfaces. After the failure, lower temperature of the specimen compared with initial stage of the test was investigated.

Keywords

Thermal infrared

Uniaxial compressive test

Thermal abnormality

Rock failure

일축압축시험에서 암석에 축적된 역학적 에너지는 파괴시험 중 빛이나 소리, 열 등 다양한 형태의 에너지로서 발산이 된다. 암석의 파괴에서 발생하는 열분포특성의 변화를 연구하기 위하여 국내에서 화강암 및 섬록암, 현무암, 응회암의 시료를 채취하였으며, 일축압축시험을 수행하여 파괴직전 및 파괴순간, 파괴직후의 온도분포를 측정하였다. 시험 결과로부터 파괴 전 온도상승 지점으로부터 균열발생지점의 예측이 가능하고, 파괴순간에는 대각선방향으로 발생하는 균열에서 응력집중과 입자 및 파괴면 사이의 마찰로 인한 온도상승이 관찰되었다. 파괴직후에는 에너지 방출로 인해 시편표면에서 초기온도보다 더 낮은 온도분포가 나타난다.

키워드

열적외선

일축압축시험

열분포특성

암석파괴

References

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Brown, E.T., 1981, Rock characterization testing and monitoring: ISRM suggested methods, Pergamon Press, Oxford, p. 211.
Fütterer, D.K., Damaske, D., Kleinschmidt, G., Miller, H. and Tessensohn, F. (eds), 2006, Antarctica: Contributions to global earth sciences, Springer-Verlag, Berlin Heidelberg New York, pp. 261-270.
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Kim, H., Lee, J.I., Choe, M.Y., Cho, M., Zheng, X., Sang, H. and Qiu, J., 2000, “eochronologic Evidence for Early Cretaceous Volcanic Activity on Barton Peninsula, King George Island, Antarctica,”Polar Research, Vol. 19, pp. 251-260.
Lee, Y.I., Lim, H.S. and Yoon, H.I., 2004, “eochemistry of Soils of King George Island, South Shetland Islands, West Antarctica: Implications for Pedogenesis in Cold Polar Regions,”Geochimica et Cosmochimica Acta, Vol. 68, pp. 4319-4333.
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Martelli, G., Smith, P.N. and Woodward, A.J., 1989, “ight, Radiofrequency Emission and Ionization Effects Associated with Rock Fracture,”Geophysical Journal International, Vol. 98, pp. 397-401.
Wu, L. and Wang, J., 1998, “nfrared Radiation Features of Coal and Rocks under Loading,”International Journal of Rock Mechanics & Mining Sciences, Vol. 35, pp. 969-976.
Wu, L., Liu, S., Wu, Y. and Wu, H., 2002, “hanges in Infrared Radiation with Rock Deformation,”International Journal of Rock Mechanics & Mining Sciences, Vol. 39,
pp. 825-831. Wu, L., Wu, Y., Liu, S., Li, G. and Li, Y., 2004, “nfrared Radiation of Rock Impacted at Low Velocity,”International
Journal of Rock Mechanics & Mining Sciences, Vol. 41, pp. 321-327.
Wu, L., Liu, S., Wu, Y. and Wang, C., 2006a, “recursors for Rock Fracturing and Failure-Part I: IRR image abnormalities,”International Journal of Rock Mechanics & Mining Sciences, Vol. 43, pp. 473-482.
Wu, L., Liu, S., Wu, Y. and Wang, C., 2006b, “recursors for Rock Fracturing and Failure-Part II: IRR T-Curve abnormalities,”International Journal of Rock Mechanics & Mining Sciences, Vol. 43, pp. 483-493.
Yamada, I., Masuda, K. and Murakami, H., 1989, “lectromagnetic and Acoustic Emission Associated with Rock Fracture,”Physics of the Earth and Planetary Interiors, Vol. 57, pp. 157-68.
Yeo, J.P., Lee, J.I., Hur, S.D. and Choi, B.G., 2004, Geochemistry of volcanic rocks in Barton and Weaver peninsulas, King George Island, Antarctica: Implications for arc maturity and correlation with fossilized volcanic centers, Geosciences Journal, Vol. 8, pp. 11-25.

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 :4
Pages :505-514

[1] 이효성, 박형동, 2004, “수치 마이크로사진측량에 의한 암석시료 표면의 체적변화량 결정,”한국지구시스템공학회지, 제 41권, 1호, pp. 1-6.

[2] Brady, B.T. and Rowell, G.A., 1986, “aboratory investigation for the electrodynamics of rock fracture,”Nature, Vol. 321, pp. 488-92.

[3] Brown, E.T., 1981, Rock characterization testing and monitoring: ISRM suggested methods, Pergamon Press, Oxford, p. 211.

[4] Fütterer, D.K., Damaske, D., Kleinschmidt, G., Miller, H. and Tessensohn, F. (eds), 2006, Antarctica: Contributions to global earth sciences, Springer-Verlag, Berlin Heidelberg New York, pp. 261-270.

[5] Hardy, H.R., 1972, Application of acoustic emission techniques to rock mechanics research, ASTM STP 505, American Society for Testing and Materials, pp. 41-83.

[6] Jacobs, P.A., 2006, Thermal Infrared Characterization of Ground Targets and Backgrounds (2nd ed.), SPIE Optical Engineering Press, Bellingham, Washington, USA, p. 184.

[7] Kim, H., Lee, J.I., Choe, M.Y., Cho, M., Zheng, X., Sang, H. and Qiu, J., 2000, “eochronologic Evidence for Early Cretaceous Volcanic Activity on Barton Peninsula, King George Island, Antarctica,”Polar Research, Vol. 19, pp. 251-260.

[8] Lee, Y.I., Lim, H.S. and Yoon, H.I., 2004, “eochemistry of Soils of King George Island, South Shetland Islands, West Antarctica: Implications for Pedogenesis in Cold Polar Regions,”Geochimica et Cosmochimica Acta, Vol. 68, pp. 4319-4333.

[9] Liu, S., Wu, L. and Wu, Y., 2006, “nfrared Radiation of Rock at Failure,”International Journal of Rock Mechanics & Mining Sciences, Vol. 43, pp. 972-979.

[10] Luong, M.P., 1990, “nfrared thermovision of damage processes in concrete and rock,”Engineering Fracture Mechanics, Vol. 35, No. 1/2/3, pp. 291-301.

[11] Martelli, G., Smith, P.N. and Woodward, A.J., 1989, “ight, Radiofrequency Emission and Ionization Effects Associated with Rock Fracture,”Geophysical Journal International, Vol. 98, pp. 397-401.

[12] Wu, L. and Wang, J., 1998, “nfrared Radiation Features of Coal and Rocks under Loading,”International Journal of Rock Mechanics & Mining Sciences, Vol. 35, pp. 969-976.

[13] Wu, L., Liu, S., Wu, Y. and Wu, H., 2002, “hanges in Infrared Radiation with Rock Deformation,”International Journal of Rock Mechanics & Mining Sciences, Vol. 39,

[14] pp. 825-831. Wu, L., Wu, Y., Liu, S., Li, G. and Li, Y., 2004, “nfrared Radiation of Rock Impacted at Low Velocity,”International

[15] Journal of Rock Mechanics & Mining Sciences, Vol. 41, pp. 321-327.

[16] Wu, L., Liu, S., Wu, Y. and Wang, C., 2006a, “recursors for Rock Fracturing and Failure-Part I: IRR image abnormalities,”International Journal of Rock Mechanics & Mining Sciences, Vol. 43, pp. 473-482.

[17] Wu, L., Liu, S., Wu, Y. and Wang, C., 2006b, “recursors for Rock Fracturing and Failure-Part II: IRR T-Curve abnormalities,”International Journal of Rock Mechanics & Mining Sciences, Vol. 43, pp. 483-493.

[18] Yamada, I., Masuda, K. and Murakami, H., 1989, “lectromagnetic and Acoustic Emission Associated with Rock Fracture,”Physics of the Earth and Planetary Interiors, Vol. 57, pp. 157-68.

[19] Yeo, J.P., Lee, J.I., Hur, S.D. and Choi, B.G., 2004, Geochemistry of volcanic rocks in Barton and Weaver peninsulas, King George Island, Antarctica: Implications for arc maturity and correlation with fossilized volcanic centers, Geosciences Journal, Vol. 8, pp. 11-25.

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

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