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World Tunnelling Congress
WTCThere are 1984 documents.
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The Naples metro Line 1: the service tunnel at Toledo station
Abstract: The new stretch of the Metro Line 1 in Naples (Italy) consists of five new stations and two twin rail tunnels with a total length of about 5 km. Toledo Station is situated in the deeply urbanized historical centre of the city. The main shaft is located by a side of the line and it is connected to the pedestrian platforms by a large size service tunnel, 13 m wide, 17 m high and 40 m long. Figure...
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Prague experience from driving metro tunnels in developed areas
Abstract: The first operating section of the Prague Metro Line A, leading from Dejvická Station to Náměstí Míru Station, was inaugurated in 1978. Whilst this metro line was several times extended in the easterly direction, up to the current terminus - Depo Hostivař Station, trains were turned back at the western end of the line in always the same Dejvická end station. The development of the capi-tal has...
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Automated Structural Evaluation of Tunnels in Service
Abstract: Over the last years, the number and length of great tunnels, particularly those of railway lines and underground lines, are significantly increasing, their traffic volume is growing and their maintenance periods are being reduced. As a consequence, their management and maintenance require new inspection techniques. By performing regular automated inspections of the state of conservation and...
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New innovative system for layer thickness control on Normet spray mobile
Abstract: Non-contact measurement systems allow measuring the layer thickness in near real-time without personnel entering the sprayed area. Two main questions must be answered on-site: Is there enough or even too much sprayed concrete applied on the tunnel wall? Applying the targeted layer thickness is important regarding the safety during the construction phase and the future stability of the concrete...
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Raise Boring Operation in Kure, Kastamonu Copper Mine
Abstract: This paper concerns about the performance estimation of Raise Boring Machine which used to excavate ventilation shafts in a copper mine located at the city of Kastamonu, on Northern Turkey. Length and diameter of the ventilation shaft are 22 m and 2.6 m, respectively. Eti Copper A.S Underground Mine raise boring operation was visited to recording operational conditions and performance...
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Floor Heave in Mountain Tunnels and the Effects of Countermeasures
Abstract: In mountain tunnels, the ground pressure on the tunnel lining increases during service, in some cases leading to the problems such as cracking of the tunnel lining and reduction of the inner space. Often deformation due to ground pressure develops very slowly over time and its development does not stop unless countermeasures are taken (Matsunaga et al., 2009). The problems include not only...
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Effect of Ground-born Vibration Induced by Intersecting Tunnels
Abstract: Vibration and noise are not only environmental but also dynamic problems, and they have become more important engineering and environmental issues as much as a concern about the quality of urban life. The increase of traffic demand in urban area and high speed railway connection between cities has caused a new issue in which the train tunnel adjoins or intersects within the city. For the case...
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Numerical Model for Building Settlement and Damage Analysis
Abstract: The State Route 99 (SR 99) tunnel is set to replace the Alaskan Way Viaduct (AWV), which is nearing the end of its service life. Upon completion, the SR 99 tunnel will be the largest in diameter (17.5 meters). The tunneling process will be performed by the use of an Earth Pressure Balance (EPB) Tunnel Boring Machine (TBM) named Bertha. Intecsa-Inarsa was part of the Design Team led by HNTB...
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Tunnel Excavation in Carbonate Rocks – Drilling and Blasting Calculation
Abstract: Since the end of the 20th century, the intense transport infrastructure construction in Croatia has been characterized by the building of numerous road tunnels, especially on routes connecting Zagreb, Split and Dubrovnik and Zagreb – Rijeka. All of the tunnels were excavated using the New Austrian Tunnelling Method (NATM), mostly by applying the drill and blast technology. This is mainly...
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Environment and health monitoring for the exploratory tunnel of La Maddalena
Abstract: The new line between Turin (Italy) and Lyon (France) will be the central and key part of the East-West “Mediterranean Corridor” , one of three major rail lines passing South of the Alps planned by the European Union (see figure 1). The bi-national cross-border section between Italy and France includes a 57.5 km-long 8.70 m-diameter single-way twin tube base tunnel, one of the longest in the...
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Use of TBM pilots for large diameter SCL caverns: Crossrail C300/C410
Abstract: Crossrail is Europe’s largest construction project, and will transform rail transport in London, increasing capacity by 10%, supporting regeneration and cutting journey times across the city. The Crossrail route will run over 100km from Maidenhead and Heathrow in the west, through new tunnels under central London to Shenfield and Abbey Wood in the east. There will be 38 Crossrail stations...
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Optimal anti-floating design of underground parking garage in Yitian town, Shenzhen
Abstract: According to the latest data released by International Energy Agency, China has overtook the US as the world’s largest energy consumer. In 2010, the GDP of China amounts to 9.27 percent of the total world. The percentages of main natural resources consumed by China are: iron ore 43%, copper 25%, coal 43.4%, steel 47.7%, aluminium 32%, cement more than 53%, crude oil 9.7%. According to the...
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Portuguese strengths and fragilities on Safety and Health practices
Abstract: Despite improvements over the years, accidents continue to be a scourge in the construction sector, leading to an increase in the number of journal papers addressing the issue, in an attempt to help construction industry to increase safety performance [1]. This paper aims to help tunneling community, describing the Portuguese approach to most typical health and safety problems in underground...
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Cross Section Templates for Brazilian Railway Tunnels
Abstract: The international literature is rich when it comes to section of road tunnels, but when the subject refers to the section of railway tunnels already perceives some lack in the academic area, when it comes to freight railroad this issue is even more rare. In view of this gap in the in-ternational literature about the study of cross sections templates tunnels for the freight railway, this...
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Implementing BIM in Large Civil Works Projects
Abstract: The Fehmarn Belt Fixed Link is an approximately 18 km immersed tunnel for rail and road traffic under the Fehmarnbelt between Denmark and Germany including portals and ramps as well as fire and rescue services on both sides of the border. Toll facilities and a control centre will be located on the Danish side. It is the largest infrastructure project ever taken on in Denmark and among the...
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Development of a highly ductile sprayed concrete as a counter-measure for explosion and fire impacts on underground...
Abstract: Extreme impact, as it may result from scenarios like explosions or huge fires, has to be considered as a valid scenario especially when dealing with objects of our urban infrastructure. Currently there is only limited amount of countermeasures available with most of them being developed for one specific threat – fire or explosion. Thus differing impact might expose weaknesses of the measure...
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