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List of products by author: Y. E. Roh
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Behavior of the fragmental rocks during the tunnel excavation
Abstract: When a tunnel is excavated, the ground around a tunnel deforms locally and the deformation shape can be influenced by the ground characteristics, the tunnel size and the excavating order. In general, when the bench cut or full face cutting is used by tunnelling, the uniform deformation shape would be occurred above a tunnel crown. Terzaghi(1954) demonstrated that the ground arching (Murayama...
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Ground arching induced by the non-uniform ground deformations
Abstract: When a tunnel is excavated, the ground above tunnel crown can be loosened and ground arching can be developed. And their size and shape would be dependent on the ground deformation characteristics and the distribution shape of local ground deformations. Terzaghi showed that the ground arching was developed due to the uniform ground deformations in the trap door tests. In this study, the...
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Performance-based deterioration prediction for efficient asset management
Abstract: In Korea, the infrastructures built from the 1970s to the 1980s during the economic growth period have been rapidly deteriorating, and it is recognized that safety-based repair as a break-down maintenance, the existing maintenance method, have limitation in using the infrastructure efficiently, safety and continuously. Therefore, the need for development of system that enables appropriate...
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