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World Tunnelling Congress
WTCThere are 1984 documents.
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Evaluation of Transverse Seismic Calculation Methods for a Circular Tunnel in Soft Soil
Abstract: Tunnel has been applied widely in the world's major underground transportation engineering. In recent years, earthquake disasters frequently occurred in whole world, such as Kobe earthquake in Japan in 1995 and Wenchuan earthquake in China in 2008, caused damage to underground structure facility. Therefore, seismologists around the world pay attention to seismic studies of underground...
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ALE FE analysis of a laboratory test for the simulation of mechanised tunnelling in soft soil
Abstract: Numerical analyses of mechanised tunnel excavation are normally performed through an extremely simplified simulation of the physical processes occurring during Tunnel Boring Machine operation. Furthermore, the volume loss and the width of the settlement trough in greenfield conditions are assumed a priori and serve as a reference for the calibration of the fictitious boundary conditions...
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Integrated Robotic System for Tunnel Structural Assessment - The ROBO-SPECT EC project
Abstract: Tunnel structural inspection is nowadays facing issues involving slow, labour expensive and quite subjective inspections being based on visual (manual) human inspections. Having in mind the increasing safety requirements and needs for higher tunnel uptimes, we can understand the importance of automated inspection and assessment of rail and road tunnels. Recent advances in robotics, computer...
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Influence on the existing building caused by shallow metro tunnel by excavation under crossing in short distance
Abstract: In recent years, as the continuous increasing of the national economy, urban rail transit construction is stepping into a rapid developing period. The buildings on the city ground are intensive. Surrounding environment impact caused by new tunnel construction is gradually becoming the hot issue of underground engineering field, the common characteristic of which is the strict requirement for...
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Copenhagen Cityringen Metro: EPB-TBM head pressure definition
Abstract: The paper describes a relevant design aspect for the Copenhagen Cityringen Metro Line, which consists of two single-track tunnels, each approximately 16 km in length, 17 underground stations, 3 construction and ventilation shafts and an access ramp. The tunnels, 5.8 m in diameter, are excavated by using four EPB TBMs; the tunnel lining is composed by 5+1 r.c. segments, 1.4 m long and 0.3 m...
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Water Control of Vertical Shaft in Singapore
Abstract: Underground space development is crucial to meet the increasing demand for space in many populated areas, e.g., in Singapore, which has a total population over 5 million and land area just over 700 km2. Due to its relatively flat terrain, vertical shaft is in general the major solu-tion of construction access to deep underground for development of underground space in rock caverns. The...
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A particular grouting application for the stability of a tunnel
Abstract: During the driving of a tunnel through the North-West Alps a challenging rock formation was encountered. The mother rock mass is a schist rich in sericite and quartzite, with a thin lamination, but the intercalation of a weaker facies at the tunnel face caused an unexpected anisotropic behaviour of the tunnel section. In detail, the section showed an anisotropic deformation path both during the...
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Tunnel As-Built Analysis with Shotcrete Monitoring System GEOKRET
Abstract: Shotcrete is a material that has now become an indispensable element in sustaining any tunnel or underground construction excavated by non-integral methods. The growing demand for the use of shotcrete is no longer exclusively for civil works, but also extensive in mining. In spite of the fact that the application of shotcrete is widespread, the main problems of qualitative and quantitative...
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Cityringen – Inner-city TBM tunneling in mixed face conditions
Abstract: Cityringen comprises twin TBM tunnels with a length of approximately 15,5 km connecting 17 new stations and 5 shafts through the old inner city of Copenhagen. The tunnelling in the Southern part of the ring is mainly driven through in Copenhagen limestone, whereas the Northern part of the ring includes mixed face and soft ground conditions. The tunnels are located at a depth of between 10 and...
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TBM Excavation of Long-Distance Water Transfer Tunnel, Pahang-Selangor Raw Water Transfer Tunnel, Malaysia
Abstract: This project aims to relieve the shortage of water supply for daily life and industries of Kuala Lumpur and Selangor State, Malaysia, in the future, supplying approximately 1.89 million m3/ day of water from Pahang State to Kuala Lumpur and the surrounding area. The 44.6km long tunnel includes 3 sections comprising 34.6km excavated by Tunnel Boring Machine (TBM), 4 sections of 9.1km length...
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Recommendations for TBM-monitoring of face bentonite support
Abstract: Within the framework of the subway development strategic program more than 160 km of subway lines and 70 stations must be built during the period of 2011-2020; therefore, over 20 TBMs for the deep tunnel construction are involved [Elgaev, 2014]. Shield tunnel excavation technology contains active earth pressure balance support or face bentonite support (hydro support). Herewith it is possible...
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CANOPEE: programming, designing and construction of urban covers
Abstract: The initiation of the research project CANOPEE was the result of discussions on the cover of the Parisian Ring Road. CANOPEE is composed of a multidisciplinary team (City of Paris, PIA, IREX, Université Paris-Est, Tecomah, ARCADIS, EGIS, CETU). Its role is to conduct a global analysis of transport infrastructure covers in urban areas. The objective is to develop analytical and decision tools as...
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Parking facilities and shelters in rock
Abstract: Nowadays cities are growing and demand more land spaces for buildings and parking spaces. One answer to this demand is an underground rock parking space. Helsinki is an excellent example of this because the underground rock spaces have been used long time now. In fact Helsinki has an underground masterplan. In the first part design solutions of underground parking and shelter facility is...
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Ceneri Base Tunnel: design and excavation of large caverns
Abstract: The Ceneri Base Tunnel (CBT), 15.4 km in length, is the southernmost portion of the flat railway line crossing the Swiss Alps (AlpTransit Gotthard Ltd). This paper describes and discusses some key issues about the design and execution of large caverns in rock. It aims at illustrating the comparison between the prognosis and the crosscheck of support methods and the adaptation of the first...
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Soil conditioning testing and monitoring for the Port Miami Tunnel
Abstract: The Port Miami Tunnel project in Florida, USA, involved construction of twin-bore, 12.9 m diameter, 1.3 km long tunnels through challenging ground conditions comprising a variable sequence of limestone and sand layers, including a highly porous, coarsely graded coralline limestone with high permeability and groundwater pressures. Effective conditioning of the excavated soil/rock materials was...
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Simulation Based Real Time Prognosis for Mechanized Tunneling
Abstract: The paper proposes a novel method for simulation and monitoring-based predictions in real time during the construction of machine-driven tunnels, thus enabling to support the steering process of tunnel boring machines. It consists of two main parts: a realistic process-oriented Finite Element (FE) model of the tunnelling project generated in the design phase of a project and, based upon this...
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