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World Tunnelling Congress
WTCThere are 1984 documents.
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Technical Challenges Faced During Underpassing of Tunnel Line-8 beneath Line-2 Tunnel by TBM at Hauz Khas
Abstract: Alignment of Magenta Line i.e. Line-8 from Janakpuri West to Botanical Garden corridor of Delhi Metro is crossing the operational yellow line of corridor Huda City Center to Jahangirpuri near Hauz Khas station, which is an interchange station for both the lines. Clear cover above the tunnel of the yellow line is about 11.97m, hence, it was not possible to accommodate the alignment of Magenta...
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Technical risk management of Line 16 Lot 1 in the Grand Paris Express project
Abstract: This article presents the technical risk management of the Line 16 Lot 1 in the Grand Paris Express project, one of the largest metro projects underway in the world. This lot includes the construction of 5 metro stations, 20 annex structures, 20 km of tunnels and subway equipment, it has an estimated cost of about 1.84 billion euros. The project is being undertaken to a tight construction...
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Technological Development of Video Capture on the Maintenance Stage for the Concrete Lining of Horizontal Tunnel
Abstract: For the sustainable use, we must do the suitable maintenance to the lining of the tunnels. Now in Japan, many administrators of road, railway, subway, hydro, energy supply tunnels adopt the video capture system and crack detection system. Several video capture systems for the highway roads in Japan are track car mount and they can get the clear pictures of concrete linings on 80km/hr driving....
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Temporary ventilation management and recommendations for conventional
Abstract: ABSTRACT: Tunnels that are built with roadheaders or other continuous mining machines with multiple connections and ventilation tunnels have complex development and construction strategies. These development strategies are mainly aimed at achieving high productivity by simultaneously performing backend works along with the excavation of tunnel. The WestConnex M4-M5 Link Tunnels (WCX Stage 3A)...
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Terzo Valico dei Giovi the new Milan -Genoa High SpeedHigh Capacity line – Serravalle Main Tunnel
Abstract: The Terzo Valico dei Giovi is a new High Speed / High Capacity railway infrastructure, part of the Rhine-Alps corridor, which connects the ports of Genoa with the existing national rail network. With its length of 53 km, of which 36 km in tunnel, the Terzo Valico dei Giovi is one of the most important high-speed rail projects in Europe. For constructing the tunnel, TBM / EPB excavation is very...
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Test Methods for Verification of Suitability for different Grouting Materials
Abstract: The annular gap between the ground and the tunnel lining must be filled with a suitable grouting material, depending on the given (hydro-)geological boundary conditions. In case of permeable soils one-component grouts are used, which consolidate due to dewatering into the surrounding soil. In insufficiently permeable soils two-component grouts are used, which harden through a chemical reaction...
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The Advancement of LED Tunnel Lighting
Abstract: This paper will review standards and methodologies of tunnel lighting design, and, examine the advancement of today’s LED technologies over legacy tunnel lighting systems. The paper will outline: the key considerations of tunnel lighting applications; the benefits of today’s LED tunnel lighting systems; and how, accordingly, legacy tunnel lighting technologies are no longer desired solutions.
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The Anderson Dam Tunnel Project for Public Safety and Sustainable Water Supply
Abstract: The Anderson Dam Tunnel Project is a high-priority, urgent project to protect public safety and ensure sustainable and reliable water supply for the Santa Clara Valley Water District in Santa Clara County, California. The objectives of the tunnel project are to provide a new high-capacity, low-level outlet enabling a quick and reliable means to draw down the Anderson Reservoir to facilitate the...
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The Automation of Tunnel Inspection Thro ugh the Use of 3D Laser and Artificial
Abstract: Regular inspection of tunnel surfaces is an important practice from both a safety and tunnel asset management perspective. However, inspection for cracking and chipping is still predominantly a manual task which is time consuming, subjective and exposes on-foot staff to risk. This presentation will explore the use of 3D laser scanning technology and Artificial Intelligence to automate the...
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The Brenner Base Tunnel - an overview of the status of the project
Abstract: The Brenner Base Tunnel (BBT) runs for 64 km between Austria and Italy, making it the longest underground railway tunnel in the world. The BBT consists of two single-track tubes, cross passages every 333 m, an exploratory tunnel, and three emergency stops. The planning is underway since 1999, and construction began in 2007. More than half of a total 230 km of tunnel construction including 80%...
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The choice of cross section form and type of tunnel.
Abstract: For long immersed tunnels such as the Fehmernbelt Tunnel with a length over 17 km it is not necessarily a traditional cross section that is the optimal solution. There are several factors that influence the choice of tunnel cross section, and operational conditions such as emergency evacuation, the working conditions for maintenance staff, a reliable power supply for ventilation, lightning, and...
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The concept of composite arching forclosely-spaced tunnels in soils
Abstract: The conventional arching effect (such as active and passive arching) cannot reasonably explain the vertical load transfer between twin closely-spaced tunnels. In this study, a new type of arching called composite arching and corresponding models in soils are proposed to illustrate the arching phenomenon of the first tunnel, in which both sides of the soil column above an existing tunnel are...
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The construction of tunnels for the Américo Vespucio Oriente 1 project in Santiago de Chile
Abstract: The "Américo Vespucio Oriente Concession, Section Av. El Salto-Príncipe de Gales" (AVO I) is part of the ambitious publicprivate partnership program, promoted by the Chilean Government, through the Ministry of Public Works, to close the Américo Vespucio Ring Road to highway standard in Santiago de Chile. AVO I will be finally completed, after a decade of analysis, incorporated in its design...
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The Edge Computing Underground Data Centres and their Innovative Ability to Valorise Waste Heat
Abstract: This paper gives an overview of the pilot project “Edge Computing Underground!” and the key advantages of placing data centres underground. In this framework, the present work discusses an innovative and sustainable solution employed to reutilise and valorise heat resulting from the operation of such data centre. This solution resorts to a geothermal system embedded in the data centre that can...
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The Effect of Limit State Design Method Applied to Shield Tunnel
Abstract: Although the limit state design method is considered to be an effective technique with regard to the performance criteria of tunnel structures, not many shield tunnels have been constructed using the said method in Japan; many are still constructed using the conventional design method. This is presumably because the benefit from application of the limit state design method is unknown. The...
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The First Circular Shaft in Asia with the Use of Vertical Shaft Sinking Machine
Abstract: The population of Singapore has increased by three fold as compared to five decades ago. To cope with the population growth, more infrastructures are required and many of these will be constructed underground. The Deep Tunnel Sewerage System (DTSS) Phase 2 is a sewer network comprises of deep tunnels which transport domestic used water at western part of Singapore, by gravity to Tuas Water...
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