Cho, Gye-Chun

Prof.

The goal of the Geosystems Engineering Laboratiry is to become the best geotechnical research facility world wide. Our novel approach combines conventional geotechnics with modern theories and newly developed techniques. We focus on the microscale aspect of geo-materials – which is necessary for understanding meso- to macro-scale behavior – by defining the fundamental physics of particulate material behavior and complementing theory with systematic experiments to develop a level of understanding beyond the confines of Terzaghian soil mechanics. Currently, the Geosystems Engineering Laboratory is conducting research in three main areas. First, we are performing studies centered on the mechanisms controlling manifold ground behavior (soil/rock) at the microscale. Second, we are utilizing wave-based techniques (elastic and electromagnetic waves) to gain fundamental insight into geophysical characterization theory and its application, Consequently, we have developed various application techniques such as 4-D tomography and tunnel-ahead prediction. Finally, we are exploring safe, efficient and economic methods to design, construct and monitor large underground structure i.e. tunnels. We have studied and proposed a systematic pre-improvement method. Our laboratory is equipped with a wide variety of research facilities from conventional mechanical equipment to cutting edge smart sensor systems. We also regularly collaborate with faculty in other engineering disciplines, major construction companies and well-known research institutions.

Education
∙ B.S. Civil Engineering, Korea University (1994)
∙ M.S. Geotechnical Engineering, Korea University (1996)
∙ Ph.D. Geotechnical Engineering, Georgia Tech (2001)
Career
∙ 2001~2002 Assistant Professor, Dept. of Civil Engineering, Penn State University
∙ 2002~2006 Assistant Professor, Dept. of Civil & Env. Eng., KAIST
∙ 2006~2012 Associate Professor, Dept. of Civil & Env. Eng., KAIST
∙ 2009~2009 Visiting Scholar, Georgia Institute of Technology
∙ 2012~present Professor, Dept. of Civil & Env. Eng., KAIST
Main Research Field
∙ Rock mass classification using elastic and electromagnetic waves
∙ Tunnel ahead prediction using electromagnetic waves
∙ Estimation of in-situ effective stress and consolidation state of soft soil using shear waves
∙ Development of 4-D tomographic system in a large triaxial cell
∙ Physical weathering of rock caused by freezing and thawing
∙ Need analysis of pre-improvement and development of its techniques for large underground spaces
∙ Geotechnical study on gas hydrate-bearing sediments
∙ DEM modeling on friction in particulate materials
Medals and Awards
∙ Tewkesbury Lecture Award (2009)
∙ 13th Young Scientist Award (Engineering 4th division) (2010)
∙ Innovative Technology Award, KAIST (2013)