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List of products by author: K. Y. Kim
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Effect of Free Surface on Ground Vibration and Burden for Blasting Excavation
Abstract: Urban rock excavation requires low vibration and rapid excavation. The existing free surface of the blasting excavation affects the level of vibration and the excavation efficiency. In this study, an in-situ experimental test was performed to verify the free surface effects. A continuous free surface was generated with different burden using abrasive waterjet cutting technology. The blasting...
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Seismic Analysis of Shaft and Tunnel Intersection Considering Strain-Dependent Rock Mass Behaviour
Abstract: Seismic analyses of the intersection of a shaft and an inclined tunnel were performed based on experimental results obtained with the developed nonlinear dynamic module. Analysis results showed that vertical and horizontal displacements seen in nonlinear analysis are larger than those seen in linear analysis. Also, nonlinear analysis shows bigger bending compressive stress acting on shotcrete....
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