K.H. Park's research while affiliated with Asian Institute of Technology and other places
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Publications (3)
Currently, advanced nations have been expanding underground traffic facilities in an effort to ease the traffic congestion as well as secure the green space on the ground in metropolitan area and a various projects aimed at achieving such a purpose have been also implemented in Seoul metropolitan area in Korea, where however not many deep road tunn...
Tunnel and underground utility projects have gradually increased in Korea through 21st century. The use of TBMs (Tunnel Boring Machine) is expected to be increased due to the high demand for sustainable and eco-friendly tunnel construction in Korea. This paper discusses the performance and development of TBMs in Korea. The advance rates of TBM in t...
The rock mass is usually damaged/fractured during the blasting. Quantitative investigation of the damaged depth is needed for stability of underground structures such as tunnels. This study deals with the blast-induced damage identification of rock mass using the surface wave method based on wavelet transformation. A series of site test were conduc...
Citations
... A similar act for deep underground use with the same definition is under consideration in Korea. Additionally, the Korean Government has decided to construct the deep-underground Great Train eXpress (GTX) at a depth of 40 m below the urban ground level (Kim et al., 2011;Lee et al., 2010;Park et al., 2010Park et al., , 2012. Fig. 1 shows a schematic layout of deep subterranean railway systems in urban areas like a GTX in Korea, which is based on the figure by Takasaki et al. (2000). ...
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... As stated by Hansen et al. (2018), TBM technology has advanced considerably with a number of significant developments (Fig. 1). Up to now, several studies (Bieniawski and Galera, 2007;Barton, 2000;Howarth et al.,1986;Hassanpour et al., 2011;Tarkoy, 1973;Saffet and Halil 2015;Salimi et al., 2017;Maleki, 2018 andLee et al., 2011) have been conducted on predicting the performance of the TBM in different statistical ways, depending on engineering coefficients and in different areas of the system. (Saffet et al., 2008) specified that many factors such as resistance, hardness, device design, RQD, interruptions in rocks, brittleness, and toughness affect the performance of TBM. ...
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... However, the wavelet transform is a localization process of time-frequency, and the scaling translation operations allow it to gradually multi-scale refine the signal. The wavelet transform can meet the demand of time-frequency signal analysis by the time segmenting at high frequency and frequency segmenting at low frequency, which is more applicable to the analysis of non-stationary processes [45][46][47][48]. ...
