터널굴착시의 지반붕괴에 대한 사례분석 = The analysis of the collapse of the ground during excavating tunnel.

다국어 초록 (Multilingual Abstract)

Tunnel can defined as "The structure having an underground space that is made by aim and use in the underground" in a broad sense and "The consecutive space, the underground pathway, having an entrance and an exit. For instance, the specific sample of a tunnel are a general way and the tunnel of a rail road Tunnel has been made from long time ago. Therefore, the technique of excavation are incredibly developing, so we can excavate everywhere. However, a sufficient study about the basic theory for designing a tunnel isn't accomplished, because the technique of excavation is based on field experience, so, tunnel is called "undergone engineering. "Furthermore, it's definitely possible in the field of structural engineering to do quantitative analysis and design by using several formulas and programs and putting bearing capacity, condition of load and condition of pressure of soil into the formulas. However the side of choosing analytic tends to be qualitative analysis instead of quantitative analysis because of the difficulty of elucidation, even though it's certain that the shotcrete and rockbolt as a principal support are playing very important roles to make good stability of tunnel
The load working on tunnel is changeable by the mature of various earth around a tunnel or shape and size of a tunnel, other factors that make a load on tunnel changeable are not only the dynamic nature of earth, but also geographical features, the method of excavation and so on. However, the tunnel must be made in spit of very complicated surroundings of earth around the tunnel.
Finally, we already presented the examples of the collapse of the tunnel and searched a countermeasure by considering the' problems in this study, so we must develop the technique of the basic theory about designing, the tunnel by using the field experience.