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Publications tagged with [tunnel support]

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<p>Flysch formations are generally characterised by evident heterogeneity in the presence of low strength and tectonically disturbed structures. The complexity of these geological materials demands a more specialized geoengineering characterisation. <br />In ...
Reference: Journal of Rock Mechanics and Geotechnical Engineering 6 (2014) 227-239
Since the advent of New Austrian Tunneling Method (NATM), shotcrete as a primary means of support in tunnels has been widely applied. It’s most important features are durability, speed of application and cost effectiveness. This paper introduces some tables ...
Reference: 30th International Conference on Ground Control in Mining
<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
<p>Ras R&rsquo;Mel Moroccan tunnel is a 2.6 km long and 60m<sup>2</sup> section single track railway tunnel. It was excavated in a complex geological context of highly heterogeneous and highly deformable soft rock. The purpose of this paper is first to describe ...
Reference: Geotechnical Aspects of Underground Construction in Soft Ground – Ng, Huang & Liu (eds), © 2009 Taylor & Francis Group, London
<p>Fibre Reinforced Shotcrete (FRS) is now used together with bolts for ground support in almost every underground metalliferous mine in Australia. Safety and economy have been the primary factors driving the widespread adoption of this system of ground support. ...
Reference: Shotcrete for Underground Support XI
Considerable practical knowledge and effective use of empirical evidence is required in the design of tunnel support systems. In many instances, it is unclear how individual support elements interact with fractured rock and which elements of the support system ...
Reference: 6th International Symposium on Ground Support in Mining and Civil Engineering Construction, Edrs: T. R. Stacey and D. F. Malan
<p>The paper gives an overview of the improvements in sprayed concrete technology that have occurred rapidly over the last 10 years, allowing the industry to consider sprayed concrete as a "permanent" structural support.</p>
Reference: "International Symposium on Underground Excavation and Tunnelling, 2-4 February 2006, Bangkok, Thailand"
The paper describes the history of the Q-system that was introduced in 1974, and its later development. The individual parameters are analysed, and their relevance for the natural geological features they seek to simulate, is discussed. It is concluded that ...
Reference: Published 2006 in Tunnels and Underground Space Technology, vol. 21, pp. 575-593
 
The purpose of this manual is to provide highway and rail transit tunnel owners guidance for establishing procedures and practices for the inspection, documentation, and priority classification of deficiencies for various elements that comprise an existing ...
Reference: FHWA 2005 Edition
A series of systematic, three-dimensional coupled finite element analyses was carried out to investigate the multiple interactions between large parallel hypothetical twin tunnels constructed in stiff clay using the new Austrian tunnelling method. Special ...
Reference: Can. Geotech. J. 41: 523–539 (2004)