No document
Search & filter
Search for a publication
Search & filter
List of products by author: J. S. Lee
-
Application of an Electric Rock Breaking method to mitigate vibration during tunnel blasting
Abstract: Vibration mitigation of a drill and blast excavation is one of the main issues in urban tunneling, and various preventive techniques have been tried so far. A pre-cut excavation method introduced in Lee, . (2016) is an alternative to reduce the blasting vibration although the preparation time of the additional cut should be shortened in field application. Another technique was investigated in...
0,00 € -
Evaluation of Seismic Performance of Rapid-transit Railway Tunnel in use
Abstract: In this paper, seismic performance evaluations were conducted to the 91 rapid-transit railway tunnels which were designed before the seismic design criteria of tunnel was established. In consideration of the fact that all the tunnels are in operation, 'The method of seismic performance evaluations for the existing tunnel' was applied, and staged evaluations were done which consist of a...
0,00 € -
Rail tunnel enlargement strategies in South Korea
Abstract: Little attention appears to have been paid to the art of tunnelling aiming to increase the cross-sectional are of the existing rail tunnels because of the difficulties involved if the tunnels ought to be kept at least partially functional during the enlargement operation. There is a necessity arisen recently of accommodating the double stack train in a conventional line linking two largest...
0,00 € -
TBM selection methodology using the AHP (Analytic Hierarchy Process) Method
Abstract: In this study, TBM selection methods to meet soil and site conditions were presented. Factors and excavation equipment affecting TBM selection by soil and environmental condition were selected and classified. Weights between equipment and influencing factors selected were calculated by applying the AHP method. The results of the analysis influence factors, Ground condition was a major factor in...
0,00 €
