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http://dx.doi.org/10.9711/KTAJ.2018.20.6.1105

A development of the ground settlement evaluation chart on tunnel excavation  

Park, Chi Myeon (ESCO Consultant & Engineers Company)
You, Kwang-Ho (Dept. of Civil and Environmental Engineering, University of Suwon)
Lee, Ho (ESCO Consultant & Engineers Company)
Publication Information
Journal of Korean Tunnelling and Underground Space Association / v.20, no.6, 2018 , pp. 1105-1123 More about this Journal
Abstract
The main risk factors of tunnel excavation through urban areas are ground settlement and surface sink which caused by ground conditions, excavation method, groundwater condition, excavation length, support method, etc. In the process of ground settlement assessment, the numerical analysis should be conducted considering the displacement and stress due to tunnel excavation. Therefore a technique that can simplify such process and easily evaluate the influence of tunnel excavation is needed. This study focused on the tunnelling-induced ground settlement which is main consideration of underground safety impact assessment. The parametric numerical analyses were performed considering such parameters as ground conditions, tunnel depth, and lateral distance from tunnel center line, etc. A simplified ground settlement evaluation chart was suggested by analyzing tendency of ground subsidence, lateral influence area and character by depth. The applicability of the suggested settlement evaluation chart was verified by comparative numerical analysis of settlement characteristics.
Keywords
Underground safety impact assessment; Ground settlement assessment; Ground settlement evaluation chart;
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  • Reference
1 Itasca Consulting Group, Inc. (2011), Fast Lagrangian Analysis of Continua, Ver. 5.0, Itasca Consulting Group, Minnesota, USA.
2 Korea Ministry of Government Legislation (2018), Special Act on Underground Safety Management, Act No. 14545.
3 Korea Ministry of Land, Infrastructure and Transport (2015), Manual of ground settlement (subsidence), MOLIT, Sejong, pp. 67.
4 Mair, R.J., Taylor, R.N., Bracegirdle, A. (1993), "Subsurface settlement profiles above tunnels in clays", Geotechnique, Vol. 43, No. 2, pp. 315-320.   DOI
5 Park, C.M. (2018), A development of the evaluation chart for tunnelling-induced ground settlement in the process of underground safety impact assessment, Ph.D. Thesis, Dept. of Civil and Environmental Engineering, University of Suwon, pp. 131.
6 Park, C.M., Lee, H., You, K.H., You, J.H. (2018), "A study of the numerical analysis method for the evaluation of underground safety", Proceedings of the KTA 2018 Annual Spring Conference, Seoul, pp. 49-50.
7 Seoul Metropolitan Government (2006), Ground investigation manual, pp. 119.