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http://dx.doi.org/10.14481/jkges.2017.18.3.15

Numerical Analysis of Frost Depth behind the Lining of Road Tunnel in Gangwon Province  

Son, Hee-Su (Department of Civil Engineering, Gangneung-Wonju National University)
Jun, Kyoung-Jea (Department of Civil Engineering, Gangneung-Wonju National University)
Yune, Chan-Young (Department of Civil Engineering, Gangneung-Wonju National University)
Publication Information
Journal of the Korean GEO-environmental Society / v.18, no.3, 2017 , pp. 15-23 More about this Journal
Abstract
Gangwon Province, located in the northeastern part of South Korea, is the coldest area in South Korea with 90% of the total area as mountainous. Therefore, tunnel damage has been reported continuously in winter. But there has been lack of researches on frost heave occurring behind tunnel lining. In this study, numerical analysis was conducted to investigate the frost depth in road tunnel constructed in Gangwon province. Based on the database on road tunnel and weather in Gangwon province, a standard tunnel shape and geotechnical properties of ground was determined. And then thermal analysis for the frost depth according to the temperature change and ground conditions were conducted. Analysis result showed that the sensitivity to frost heave of metamorphic rock and sedimentary rock is higher than sand. Lower initial ground temperature leads to deeper frost depth and consequently increases frost damage. In addition, lining thickness, specific heat capacity, and thermal conductivity also affect greatly on the variation of frost depth.
Keywords
Road tunnel; Frost depth; Tunnel damage; Thermal analysis;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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