Sang-gui Ha

ORCID: 0000-0002-9634-6166
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About
Contact & Profiles
Research Areas
  • Geotechnical Engineering and Analysis
  • Tunneling and Rock Mechanics
  • Drilling and Well Engineering
  • Advanced Surface Polishing Techniques
  • Grouting, Rheology, and Soil Mechanics
  • Rock Mechanics and Modeling
  • Geotechnical Engineering and Underground Structures
  • Fire effects on ecosystems
  • Advanced machining processes and optimization
  • Landslides and related hazards

Hanyang University
2020-2023

The utility tunnels used for electricity transmission are in high demand these days. literature presents many limitations the currently cutterhead drive design procedure while using a shield tunnel boring machine (TBM) excavation of relatively small diameter tunnels. In order to develop an appropriate method specially drive, experimental data obtained through operation 3560 mm TBM were this research work. For purpose, earth pressure balance (EPB) was manufactured and facility established...

10.3390/app10155187 article EN cc-by Applied Sciences 2020-07-28

Mechanical methods of tunnel excavation are widely used because their high output, and the selection appropriate technology depends on ground composition project-related features. Compared with boring machines (TBMs) roadheaders, mechanical pre-cutting in widening have proven to be reliable capacity expansion. other machines, characteristics not systematically analyzed rare use. In this study, a machine laboratory based linear cutting tests performed four rock specimens different uniaxial...

10.3390/app13021205 article EN cc-by Applied Sciences 2023-01-16

In the convergence–confinement method, longitudinal deformation profile (LDP) serves as a graphical representation of actual tunnel convergence (both ahead and behind face); therefore, it is considered important for determining distance support installation from face or timing after excavation in this method. The LDP function rock mass quality, size, state situ stresses; thus, obtaining according to conditions essential analyzing complete behavior during excavation. famous shows that best...

10.3390/app11125405 article EN cc-by Applied Sciences 2021-06-10
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