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Publications tagged with [tunneling]

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<p>In this research, the prospect of tunneling by cut and cover and New Austrian Tunneling Method (NATM) for underground metro rail system in Dhaka city was evaluated. Both conventional analysis and 2D finite element analysis using an elasto-plastic constitutive ...
Reference: Int. J. of GEOMATE, April, 2016, Vol. 10, No. 2 (Sl. No. 20), pp. 1776-1783
<p>During tunneling in loose grounds, the ground deformation caused by drillings around the tunnel, leads to land subsidence and the adjacent tunnel which would affect tunnel structure and surrounding structures. In such situations it is necessary to improve ...
Reference: Open Journal of Civil Engineering, 2016, 6, 156-162
When time constraints in tunnel construction cause standard design and construction procedures to be compressed and time sensitive decisions are critical, preceding over other conventional requirements or when tunnel construction commences prior to the completion ...
Reference: Practices and Trends for Financing and Contracting Tunnels and Underground Works, Athens, March 22nd - 23rd 2012
<p>A Dynamic Bayesian Network (DBN) model for probabilistic assessment of tunnel construction performance is introduced. It facilitates the quantification of uncertainties in the construction process and of the risk from extraordinary events that cause severe ...
Reference: Manuscript accepted for publishing in J. of Computer Aided Civil and Infrastructure Engineering
<p>The expansion of urban populations comes with an associated demand for increased public transport. An often utilised solution is to construct a rapid transit system within tunnels. Generally, a pair of tunnels are constructed within relative close proximity. ...
Reference: Eurofuge 2012
<p>Traffic congestion and environmental factors are creating a demand for greater utilization of underground spaces in urban areas. In mechanized excavation of subway tunnels, the Earth Pressure Balanced Shield (EPBS) has been developed in the recent decades ...
Reference: First Asian and 9nth Iranian Tunneling Symposium, November 2011, Tehran - Iran
This paper aims to provide a correlation between the two quality indexes, with the intention of supplying a tool to aid in both the design phase and the daily control of work execution. The formulas were obtained from the on-site observation of rocky masses ...
Reference: Revista de la Construcci? Volumen 9 No 1 - 2010
Sulphatic claystones exhibit a heavily swelling behavior and are among the most problematic rocks for tunnelling. Their swelling is usually attributed to the transformation of anhydrite to gypsum. The paper questions this simplistic hypothesis through a qualitative ...
Reference: 59th Geomechanics Colloquy 2010 Session on “Tunnel construction in swelling ground”
The paper studies the accuracy of 3D finite element predictions of a displacement field induced by NATM tunnelling in stiff clays with high K0 conditions. The studies are applied to the Heathrow express trial tunnel. Two different constitutive models are used ...
Reference: February 4, 2009 Revised version of the paper submitted to ASCE JGGE
In 1984 and 1985, two 7.6m diameter TBM tunnels were driven from the Donkin-Morien peninsula in Nova Scotia to access the Harbour coal seam. The design of the ground support was based on identifying zones of rock failure through the application of the Hoek ...
Reference: RockEng09 — 3rd Canada-US Rock Mechanics Symposium & 20th Canadian Rock Mechanics Symposium