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Publications tagged with [shallow tunnels]

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<p>During the construction of the Bullet Train lines in Japan, several shallow tunnels were excavated in unconsolidated ground using the New Austrian Tunnelling Method (NATM). However, ground and tunnel settlements frequently occurred due to the low stiffness ...
Reference: Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris 2013
<p>In this paper, ground movement in a highly populated region of Iran&rsquo;s capital city, Tehran, induced by excavation and construction of 7 the line of Tehran subway has been investigated. It was aimed to analyse the ground displacements and surface settlement ...
Reference: Geosciences 2012, 2( 6 ): 1 85 - 19 1 DOI : 1 0.5923/j. geo . 2012020 6 . 06
<p>The construction of shallow mined tunnels in urban settings is frequently undertaken by use of conventional tunneling methods. In soft ground under shallow cover the construction techniques rely largely on the use of pre-support measures and ground improvement ...
Reference: 2011 World Tunnel Congress and 37th ITA General Assembly Proceedings
Explicit finite difference code was used to calculate the stability factors of shallow tunnels without internal support in limit state. The proposed method was formulated within the nonassociative plasticity. For the shallow tunnels in soft clay, without considering ...
Reference: Trans. Nonferrous Met. Soc. China 19(2009)
<p>For the construction of shallow tunnels in settlement-sensitive urban areas it is very important to reduce the settlements and to increase the stability of the tunnel face during the excavation. In the case of shotcrete excavation, the use of different ...
Reference: Geotechnical Aspects of Underground Construction in Soft Ground – Ng, Huang & Liu (eds), © 2009 Taylor & Francis Group, London
Buried tunnels with circular cross section, such as urban undergrounds are very popular in transportation engineering. The seismic behavior of such structures during operation is of importance. There exist different closed form solutions, such as Penzien and ...
Reference: The 14 th World Conference on Earthquake Engineering October 12-17, 2008, Beijing, China
<p>This paper describes the results regarding the measurements and analysis to investigate the characteristics of ground surface settlement when a tunnel is advanced through unconsolidated ground. Rokunohe tunnel is a 3,810m long railway tunnel in Hachinohe ...
Reference: International Journal of the JCRM, Volume 4, Number 1, September 2008, pp.14-20
Complicated 3-Dimensional (3D) parametric analyses were carried out (by using Finite-Difference models of more than 80000 elements) in order to investigate the tunneling excavation and temporary supportinduced surface settlements in the case of a shallow (depth ...
Reference: 2 nd International Conference “From Scientific Computing to Computational Engineering” 2 nd IC-SCCE Athens, 5-8 July, 2006
The paper investigates the steady-state rise of the groundwater table upstream of a shallow tunnel due to the obstruction of the groundwater low in the direction normal to the tunnel axis, using a steady-state finite-element groundwater low model. Based on ...
Reference: Ingegneria Geologia degli Acquiferi, 7, 3-6, Italy,(1996)
<p>The development of urban tunnels has resulted in the construction of several tunnels under bridges, which influence their performance. It is important to assure the safety and performance of the bridge during and after tunnel construction. The analysis ...