This research program will be carried out for 5 years from 1993 to 1997, during this periods we plan to improve the construction technologies which preferentially need to develop the underground space in Korea, such as the mechanical excavation techni...
This research program will be carried out for 5 years from 1993 to 1997, during this periods we plan to improve the construction technologies which preferentially need to develop the underground space in Korea, such as the mechanical excavation techniques which can reduce the construction eriods effectively, the quxilidry reinforing and water proofing techniques in underground excavation, the safety evaluation systems of adjacent structure. In this year we develop the direct drilling Umbrella Arch Method, which is used in weak ground conditions, and in order to estimate the effectiveness of ground reinforcing and water proofing, we are to carry out the numerical experiments and analysis of field instrumentation data. Particularly, to fix this method, we arrange the design techniques, and surveying the abroad design examples and trying to analyze role of the design parameter by numerical experiments. Then we get the patent from related domestic, abroad institutes about developed method.