• Proceedings of the Korean Geotechical Society Conference
• /
• 2010.03a
• /
• pp.1398-1408
• /
• 2010

Recently, accelerating population and advanced economy result in extending old freeways and constructing new freeways. To make a good freeway shape, tunnel constructions are also rapidly increasing. Therefore, a possibility of a collapse during a tunnel excavation is getting higher in a proportionate manner. This research paper will analyze forms and causes of the collapses for different geological conditions and applied reinforcement solutions by investigating typical collapse sites during highway tunnel constructions.