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Searching Geotechpedia for tunnel collapse

<p>A single track railway tunnel was constructed by prevault (Perforex) method in tertiary sedimentary ground conditions as a by-pass of an open coal mine. After excavation of about half of the 1,7 km long tunnel, sudden, daylight collapse happened and destroyed ...
Reference: Proceedings of the World Tunnel Congress 2014 – Tunnels for a better Life. Foz do Iguaçu, Brazil.
<p>This guidance document has been written to assist tunnel designers, contractors and owners in understanding the benefits of and limitations in the use of spray applied waterproofing membranes in excavated tunnels and shafts, and to provide guidance in drawing-up ...
Reference: ITAtech report N°2 - APRIL 2013
<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
The tunnel of the Tabriz urban railway line 2 (TURL2), Iran, will pass through an underground commercial center on its way. Too little distance between the tunnel crown and the underground structure foundation will probably cause collapse or excessive settlement ...
Reference: Songklanakarin J. Sci. Technol. 32 (2), 145-152, Mar. - Apr. 2010
Overstressing of the rock surrounding a tunnel can result in either brittle fracture of the intact rock or shear failure along pre-existing discontinuities such as joints or shear zones. These two types of failure can co-exist and the extent to which the failures ...
Reference: Rock Engineering in Difficult Ground Conditions – Soft Rocks and Karst – Vrkljan (ed) © 2010 Taylor & Francis Group, London
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
<p>Construction of tunnels is connected with high uncertainty in the field of costs, construction period, safety and impact on surroundings. Risk management became therefore a common part of tunnel projects, especially after a set of fatal collapses occurred ...
Reference: World Academy of Science, Engineering and Technology 58 2009
<p>The objective of the present work is the experimental, analytical and numerical investigation of the face instability mechanism of shallow circular cylindrical tunnels that are excavated in frictional geomaterials characterized by small cohesion. For the ...
Reference: RIVISTA ITALIANA DI GEOTECNICA 1/2009
<p>The possibility of partial failure of large slurry shield-driven tunnels is investigated by an upperbound approach in limit analysis and a three dimensional numerical modeling for the Shanghai Yangtze River Tunnel. The results of the upper-bound limit analysis ...
Reference: Geotechnical Aspects of Underground Construction in Soft Ground – Ng, Huang & Liu (eds) © 2009 Taylor & Francis Group, London
<p>The state of art of tunnel earthquake damages and tunnel earthquake damage mechanism are briefly introduced in this paper. According to tunnel&rsquo;s traffic function and damage descriptions based on the investigation, tunnel damages are divided into five ...
Reference: The 14th World Conference on Earthquake Engineering October 12 - 17, 2008, Beijing, China
Hurriyet   05 December 2016   Turkey   Asia  
<p>According to Hurriyet article, the tunnel is located in Yusufeli district of Erzurum.</p><p>The failure is connected to the Yusufeli dam located in close proximity with the construction site. </p><p>The site was evacuated on Tuesday (29th November) and ...
SPLOID   12 January 2016   World   World  
<p>Yeah, I&rsquo;m not ashamed to admit this: I feel slightly less comfortable when I&rsquo;m under a tunnel than when I&rsquo;m not. It&rsquo;s not that I think that the tunnel will collapse on me but it&rsquo;s because I know the sky absolutely won&rsquo;t. ...
Filed under: Construction News
Alpedhueznet   06 July 2015   Franc   Lac du Chambon  
<p>As mother nature tries to reclaim the tunnel du Chambon, we asked last week "When will the mountain fall?" well it seems like more of it did fall, just this weekend.</p><p>A huge collapse does appear to be imminent, and local residents are now having to ...
Filed under: Natural Hazards