Engineering Geology

실험실, 현장, 그리고 시추공 환경에서 지각응력의 변화로 인한 암석의 파괴 및 변형, 지진 발생 원인 등을 연구합니다.

Chandong Chang

Professor of Engineering Geology

Department of Geological Sciences
Chungnam National University
99 Daehak-ro, Yuseong-gu, Daejeon 34134, KOREA
Phone: [+82] 42-821-6430
Fax: [+82] 42-823-5636
E-mail: cchang@cnu.ac.kr
Website: http://www.cnu.ac.kr/~cchang/

EDUCATION

2001: Ph.D. (Geological Engineering), University of Wisconsin–Madison, USA
1991: M.S. (Geophysics), Seoul National University, South Korea
1989: B.S. (Geological Sciences), Seoul National University, South Korea

RESEARCH EXPERIENCE

2003–Present: Professor, Chungnam National University
2011–2012: Blaustein Visiting Professor, Stanford University
2002–2003: Geophysicist, GeoMechanics International Inc., USA
2001–2002: Post-doc, Stanford University

HONORS

2011 Blaustein Visiting Fellowship, Stanford School of Earth Sciences, Stanford University
2006 Rock Mechanics Research Award, American Rock Mechanics Association @Golden, Colorado, USA

RESEARCH INTERESTS

The key word of my research is ‘STRESS’, an invisible driving force that brings about a wide variety of geological/geophysical events, including deformation and failure of rocks, faulting, earthquake, and movement of crustal plates. The stress field is also an important parameter needed to analyze a variety of geological engineering problems such as wellbore stability, excavation, slope stability, foundation, and so on.

The major approaches I pursue are

  • to simulate geomechanical phenomena under controlled stress conditions in the laboratory, and
  • to observe geological phenomena caused by stress in the field or boreholes.

PUBLICATIONS

*Since 2010

  • Lee, J., Hong, T.-K. and Chang, C., 2017, Crustal stress field perturbations in the continental margin around the Korean Peninsula and Japanese islands, Tectonophysics. (in press)
  • Song, I. and Chang, C., 2017, In situ stress conditions at IODP Site C0002 reflecting the tectonic evolution of the sedimentary system near the seaward edge of the Kumano basin, offshore from SW Japan, Journal of Geophysical Research, 122, 4033-4052, DOI:10.1002/2016JB013440.
  • Chang, C., 2017, Critical pore pressure assessment for CO₂ geological storage in Gyeongsang Basin, Korea, from a geomechanics perspective, Geosciences Journal, 21, 617-630.
  • Chang, C., and Song, I., 2016, Present-day stress states underneath the Kumano basin to 2 km below seafloor based on borehole wall failures at IODP site C0002, Nankai accretionary wedge, Geochemistry Geophysics Geosystems, 17, doi:10.1002/2016GC006562.
  • Lin, W., Byrne, T.B., Kinoshita, M., McNeill, L.C., Chang, C., et al., 2016, Distribution of stress state in the Nankai subduction zone, southwest Japan and a comparison with Japan Trench, Tectonophysics, http://dx.doi.org/10.1016/j.tecto.2015.05.008.
  • Chang, C., and Jo, Y., 2015, Heterogeneous in situ stress magnitudes due to the presence of weak natural discontinuities in granitic rocks, Tectonophysics, 664, 83-97.
  • Chang, C., Jo, Y., Oh, Y., Lee, T.J. and Kim, K.-Y., 2014, Hydraulic fracturing in situ stress estimations in a potential geothermal site, Seokmo Island, South Korea, Rock Mechanics and Rock Engineering, 47, 1793-1808, DOI 10.1007/s00603-013-0491-7.
  • Chang, C. Mallman, E.P. and Zoback, M.D., 2014, Time-dependent subsidence associated with drainage-induced compaction in Gulf of Mexico shales bounding a severely depleted gas reservoir, AAPG Bulletin, 94, 1145-1159.
  • Lee, H. Chang, C., Ong, S. H. and Song, I., 2013, Effect of anisotropic borehole wall failures when estimating in situ stresses: A case study in the Nankai accretionary wedge, Marine and Petroleum Geology, 48, 411-422.
  • Chang, C. and Haimson, B.C., 2013, Reply to Comments on the ISRM Suggested Method “A Failure Criterion for Rocks Based on True Triaxial Testing”, Rock Mech Rock Eng , 46, 921-922. DOI 10.1007/s00603-013-0412-9.
  • Na, H.-W., Chang, C. and Chang, C.-J., 2013, Friction-dependent slip behavior of Imgok Fault under the present-day stress field, Journal of Engineering Geology , 23, 1-9. (Korean with English abstract)
  • Chang, C. and Haimson, B., 2012, A failure criterion for rocks based on true triaxial testing, ISRM Suggested Method, Rock Mechanics and Rock Engineering, doi:10.1007/s00603-012-0280-8.
  • Kim, D., Bahk, J.-J., Lee, J., Ryu, B.J., Kim, J.-H., Chun, J.H., Torres, M.F. and Chang, C., 2012, Relationships between gas hydrate occurrence types and sediment characteristics in the Ulleung Basin, East Sea, Economic and Environmental Geology, 45, 397-406. (Korean)
  • Choo, M., Song, I., Lee, H., Kim, T. and Chang, C., 2011, Application of the electrical impedance of rocks in characterizing pore geometry, Journal of Engineering Geology, 21, 323-336. (Korean)
  • Park, M, Chang, C., et al., 2011, Mechanical properties and failure behavior of grouting cements for CO2-injection hole, Journal of Engineering Geology, 21, 147-156. (Korean)
  • Moore, J.C., Chang, C., McNeill, L., Thu, M.K., Yamada, Y. and Huftile, G., 2011, Growth of borehole breakouts with time after drilling: Implications for state of stress, NanTroSEIZE transect, SW Japan, Geochem. Geophys. Geosyst., 12, Q04D09, doi:10.1029/2010GC003417.
  • Kim, D., Kwon, Y.K. and Chang, C., 2011, Geological Characteristics of Extra Heavy Oil Reservoirs in Venezuela, Economic and Environmental Geology of Korea, 44, 83-94.
  • Oh, Y., Chang, C. and Lee, T.J., 2010, Distinguishing permeable fractures in crystalline rock using well log data: case study in Seokmo Island, Journal of the Geological Society of Korea. 46, 595-607.
  • Chang, C., McNeill, L.C., Moore, J.C., Lin, W., Conin, M. and Yamada, Y., 2010, In situ stress state in the Nankai accretionary wedge estimated from borehole wall failures, Geochemistry Geophysics Geosystems, 11, Q0AD04, doi:10.1029/2010GC003261.
  • Chang, C. and Zoback, M.D., 2010, Viscous creep in room-dried unconsolidated Gulf of Mexico shale (II): Development of a viscoplasticity model, Journal of Petroleum Science and Engineering, 72, 50-55
  • Poudyal, C.P., Chang, C., Oh, H.-J. and Lee, S., 2010 Landslide susceptibility maps comparing frequency ratio and artificial neural networks: a case study from the Nepal Himalaya, Environmental Earth Sciences. 61, 1049-1064.
  • Chang, C., Lee, J.B. and Kang, T.-S., 2010, Interaction between regional stress state and faults: complementary analysis of borehole in situ stress and earthquake focal mechanism in southeastern Korea, Tectonophysics, 485, 164-177.