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Papers from WTC and ITA conferences have been made available as PDF documents.
ProceedingsThere are 1984 documents.
List of endorsed conferences
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WTC
World Tunnelling Congress
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Back Analysis of Monitoring Data for Un derground Stations of the Jakarta MRT Phase 1 Project.
Abstract: The underground stations of the Jakarta MRT Phase 1 Project were constructed by the top-down cut-and-cover method in alluvial and diluvial soil strata. The typical diaphragm wall for underground stations has a thickness of 1.0 m, and a depth of 30 – 21 m. The monitoring of lateral deflections of diaphragm walls was conducted at all stations. The monitored maximum lateral deflections of...
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Severe Rockburst Event – TBM Recovery - A Case Study
Abstract: Twin 8.5 m diameter, 10 km long parallel headrace tunnels under overburdens of up to 1 870 m with high horizontal stresses were excavated for the Neelum Jhelum Hydroelectric Project located in the Azad Kashmir region of northeast Pakistan using two main beam gripper Tunnel Boring Machines (TBMs). Both TBMs started headrace tunnel excavation in early 2013 with completion by the first TBM in...
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E4 Stockholm Bypass, Data Administration During the Construction Phase
Abstract: The project Stockholm Bypass is located west of Stockholm city centre to decrease the north-south road traffic through Stockholm and linking together and develop the external and regional cores. The bypass consists of more than 50 km of rock tunnels which will be constructed by using the method of drill and blast. As well of the means of this large scale and complex project and the overall...
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Tunnelling Studies for CERN’s Future Circular Collider
Abstract: CERN, the European Organisation for Nuclear Research, has started planning for a future upgrade of their particle accelerator complex located in the Geneva basin, straddling the France/Swiss border.Studies are currently under way for the planning and construction of the Future Circular Collider (FCC) project which will allow the scientific community to expand their knowledge on particle...
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The Brenner Base Tunnel, Overview and TBM Specifications for the 2 tunnel lots at the Austrian Side.
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, connecting cross passages every 333 m and an exploratory tunnel – which lies between and 12 m below the main tunnels. About 76 km of in total 230 km of the entire project are already excavated. Since spring 2017 work...
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Rock Conditioning in EPB-Tunneling, Case Study: Southern Extension of Tehran Metro Line 6
Abstract: The EPB-TBM is usually used in a ground which has a significant part of finegrained soil. A suitable ground for an EPB machine, after excavation and entering into the pressure chamber, becomes a plastic material with required ability to apply the face pressure. Tehran metro line 6 project with length of 31.2 km has an extension part about 6 km. The path of extension part is located in both of...
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Oslo Follo Line/ Norway – Project Challenges and TBM Solutions
Abstract: Until recently, all rail tunnels in Norway were excavated using drill & blast technology. The Follo Line project is a new 22 kilometers long double track rail line that is currently under construction between Oslo Central Station and Ski. Four double shield hard rock TBMs with an excavation diameter of 9.96 meters excavate a total of about 36 kilometers of predominantly Precambrian gneisses...
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Innovative solution for the excavation of the tunnels of the Line C of the underground of Rome, adjacent to the...
Abstract: Section T3 (Colosseo - San Giovanni) of the Line C of the underground of Rome, currently under construction, extends across the city’s historical centre and very near (sometimes underground crossing) monuments dating back to the age of the ancient Romans.For this reason, to reduce settlement, extremely effective innovative technical solutions were devised; this paper illustrates the solution...
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Üsküdar ümranİye çekmeköy metro construction tbm tunnels passage to the üsküdar square construction works
Abstract: The tunnel excavations in Uskudar-Umraniye-Cekmekoy metro construction project conducted by the Istanbul Metropolitan Municipality Department of Rail Systems, Directorate of Rail Systems on Asian Side, are executed by using both NATM and TBM excavation methods. Platforms, scissor crossing tunnels, transportation tunnels, link tunnels and ladder tunnels that have various cross sections are...
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TBM Tunnelling below the Suez Canal in Challenging Ground Conditions containing Methane Gas
Abstract: The Port Said Road Tunnels Project provides a vital transport crossing of the Suez Canal, as part of the Suez Canal Development Mega-project in the North Sinai. The twin-tube, 2.8km long tunnels are excavated by two, mix-Shield TBM’s with a bored diameter of 13.05m and at depths up to 57m below ground level. Each tunnel tube affords a dual-carriageway road, an emergency evacuation-way below the...
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Considerations for the long-term performance of fastenings in
Abstract: In the last years, the tunnelling industry is increasingly faced with a demand for expertise in the design and installation of anchors to concrete. This is also made evident in construction with recent publications that are now the basis in anchor design, specification, and installation, such as the Code of practice for the selection and installation of post-installed anchors, the Eurocode 2 -...
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Flood measure of the Underground station of Tokyo Metro
Abstract: Tokyo Metro Co., Ltd. (hereinafter, Tokyo Metro) comprises 9 routes in capital area of Japan operating over 195.1 km and 179 stations, and is used by 7.24 million passengers per day. Tokyo Metro operates on the belief that security equals safety plus service. In regard to safety, special effort is devoted toward countermeasures for natural disasters. In light of recent extreme weather events,...
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Measure for heaving of roadbed in squeezing ground - Kyushu Shinkansen Nishikyushu line Tawarazaka tunnel
Abstract: Some of mountain tunnels suffer from heaving of roadbed after completion, and require some countermeasures. The cost of implementing countermeasures is usually higher for a tunnel in service than in construction. However it is difficult to predict and attend heaving of roadbed during a construction stage. This paper provides excavation approaches to inhibit heaving of roadbed after the...
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Protection against fire for the UK Crossrail tunnel structures
Abstract: The UK London Crossrail project was devised to improve transportation links across a city faced with an increasing population density and a growing demand for greater public transport utilisation. The central section of the Crossrail project across the city has been constructed almost entirely underground. It will provide an East-West link to and from the suburbs Traversing the city and linking...
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Resolution of a contractual dispute for tunnel excavation
Abstract: In mechanized tunneling construction with Earth Pressure Balance (EPB) machines, the conditioned excavated soil paste inside the chamber is employed as the support medium. Information on the actual pressure distribution in the chamber is important to evaluate the effective safety of the tunnel face against loss of stability. On job-sites, pressure sensors are often installed on the bulkhead and...
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On-Site Visualization as a new monitoring scheme for tunnelling engineering
Abstract: This paper proposes a new monitoring scheme which is characterized by use of new type of instruments capabe of not only processing data, but also visually outputting them for immediate recognition of measured information by vision. Therefore, time required for all workers to notice occurrence of an event could be as small as the theoretical speed limit for data transmission, namely the speed of...
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