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World Tunnelling Congress
WTCThere are 1984 documents.
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Passive fire protection and life safety
Abstract: The positive effect of passive fire protection – namely protecting the tunnel lining with boards or mortars to prevent the tunnel from severe structural damage during the fire and to maintain sufficient durability after the fire - has been proved in many severe tunnel fire accidents in the past. Tunnels are a vital and vulnerable point of the transportation networks global wide. In case of an...
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Observational approaches in tunneling: some thoughts
Abstract: Doubtless, tunnel design involves much higher uncertainties than any other civil engineering work. There is no other field where construction and design are so inseparable as in the underground structures. Often, the knowledge of the geological structure, the hydro-geological conditions, the mechanical properties and the behavior of the soil/rock is only fulfilled during the tunnel excavation....
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Effective 3D Data Visualization in Deep Shaft Construction
Abstract: In the Horonobe Underground Research Laboratory located in Hokkaido, Japan, a “3D geological structure/construction data visualization system” has been employed to facilitate obser- vational construction. Using this system, geological data, measurement data, construction data and prediction analysis results are visualized and integrated comprehensively as the construction proceeds. The planned...
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Design Conditions for 2 Section of Bucharest Metro Line 5
Abstract: Bucharest City Metropolitan Area has in excess of 2,05 million people. In the prepara- tion of global development for Bucharest metro transport, the first step was the identification of methods of increasing the share of Bucharest metro transport system, for increase in performanc- es under the specific circumstances that the urban public transport involves. One of the main strategies which...
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Building underground: Which benefits from a sustainable point of view?
Abstract: The urban planning is one of the most important politics and territorial political instruments in measuring the sustainability as Agenda 21, Territorial Climate Energy Plan . The application of the sustainable development (SD) on the urban planning aims to take into account all its aspects and to sit up a multi-criteria analysis concerning the environmental, economic and social fields. A...
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Waterproof Rock Tunnels for the Preservation of Hydrological Environment
Abstract: Waterproof rock tunnels have been constructed in Japan when it was necessary to reduce the impact on the hydrological environment. This study performed case analyses of existing waterproof rock tunnels in Japan and seepage analysis on the hydrological behaviour related to the waterproof rock tunnels to discuss the practicability of design and construction. The results of the case analyses show...
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Measurement of Cutter Forces Acting on a Double Disc Cutter in a Full–scale Linear Rock Cutting Test
Abstract: Linear cutting test shows the high reliability of test results in the measurement of cutter acting force because this test use a full-size disc cutter and practical test conditions. That is the reason why many researchers performed the linear cutting test for the design and performance evaluation of tunnel boring machines (Bilgin et al., 1999; Chang et al., 2011; Rostami and Ozdemir, 1993;...
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Design of Segmental Tunnel Linings for Serviceability Limit State
Abstract: Precast segmental linings are increasingly used in the mechanized tunneling methods using TBM- bored shield tunnels. Tunnel segments are designed following the approach of limit state design recommended by national and international codes and guidelines. Ultimate limit state (ULS) and serviceability limit state (SLS) are specified in these design codes. The former focuses mostly on the ultimate...
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A New Generation of Portable Linear Rock Cutting Machine (PLCM ) and Comparison with Full Scale Linear Rock Cutting...
Abstract: A new portable linear rock cutting (PLCM) device was developed in the Mining Engineering De-partment of Istanbul Technical University and supported by The Scientific and Technological Re-search Council of Turkey (TUBITAK-112M859). The basic disadvantage of the full-scale linear rock cutting test is that it requires large blocks of rock samples, which are usually difficult, too expen-sive, or...
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Numerical model for simulation of face seizure in EPB
Abstract: One of the main concerns in using a shielded machine in shallow soil tunnels is the possibility of the face seizure in soft ground. To realistically evaluate the possibility of face seizure in such grounds, the interaction between the soil and shield, lining and backfilling need to be understood. This paper will explain the background theories and the application of numerical analysis for 3D...
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Controlling the impacts of constructing a large diameter SCL tunnel on adjacent assets for Victoria Station Upgrade,...
Abstract: Victoria Station Upgrade (VSU) is a £741 million upgrade of the busiest station on London Underground and one of the UK’s strategic transport infrastructure assets. The Victoria Line is the busiest London Underground line with more than 100 million passengers per year. In order to minimise impact to the already stretched transport infrastructure, key requirements by the client were: the new...
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Monitoring the deformations induced by large diameter SCL tunnels on existing tunnels for Victoria Station Upgrade,...
Abstract: This paper describes the instrumentation and monitoring system implemented during construction of a large diameter sprayed concrete lined (SCL) escalator tunnel forming part of the upgrade to Victoria Station. Victoria Station Upgrade (VSU) is a £741 million upgrade of one of the busiest stations on London Underground, and one of the UK’s strategic transport infrastructure assets. The VSU...
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Tunnelling of Bucharest Metro Line 5: hard-points and performances
Abstract: The Bucharest metro system is actually made of four (4) operating metro lines (Line 1 to Line 4), one line under construction (Line 5), and another one in the design stage (Line 6). The Line 5 (Magistrala 5) is made of twenty-four (24) stations, running from Râul Doamnei station tostation, crossing the city centre in the East-South West direction. The stretch of the Line 5 of the metro system...
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Using risk analysis in construction tendering processes
Abstract: This article is primarily aimed at owners, project promoters and financial institutions to help them in understanding the mechanisms of risk management in the procurement process of tunnelling works. Risk management has been a subject well discussed within the tunnelling industry for many years as the stakes relating to underground works can be very high indeed. With the publication in 2009 of...
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Successful engagement of mechanized tunnelling technology in Russia
Abstract: With the first use of a 6.24m-diameter Mixshield TBM for the Metro Moscow in 1987, the way was paved for a successful market entry of German manufactured mechanized tunnelling equipment in Russia. Another 13 years passed before re-entering the market in Russia with the contract for a 14.2m-diameter tunnel boring machine (TBM) for the Lefortovo road tunnel in Moscow. Since then Russia has...
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Feldkirch city tunnelsystem – First rockmade roundabout in the E.U.
Abstract: With the resolution of the Provincial Government of Vorarlberg in 2009 to finance the first rock-made roundabout within the European Union it opens a new dimension of using underground space in densely populated urban aereas. As there are several exampels in Europe for under-ground roundabouts buildt by cut & cover, this one will be the first made by drill & blast in a hard rock...
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