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World Tunnelling Congress
WTCThere are 1984 documents.
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Grand Paris Line 16 Tunnel Connection: Comparison between Different Types of Ground Treatment
Abstract: Line 16, a 30 km long underground metro line with 10 stations, is a part of a huge construction programme of over 200 km of automatic metro line with 68 stations in the Paris region. In terms of geology, the project is located in a heterogeneous sedimentary sequence consisting of series of marls, limestone and fine sand, typical for the Paris region. Several connections between tunnels and...
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Practical Considerations for the Design of Large Diameter Segmental Linings
Abstract: The use of large diameter (greater than 10m) segmentally lined TBM tunnels is becoming increasingly commonplace. This places pressure on the segmental lining designer, who must design for more segments designed for much higher forces, and sometimes more onerous load conditions. While some of the load conditions on large diameter tunnel linings have been described in past literature, many of the...
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Online Multidimensional Time Series Anomaly Detection Algorithm based on Shield Construction
Abstract: The real-time anomaly detection is very important in the process of shield tunneling. The alarm for abnormal events can help the staff to make decisions quickly and ensure the engineering safety. However, the traditional methods of shield anomaly detection are mainly depended on analysing for one-dimensional time series one by one, so its accuracy is low, which cannot meet the actual...
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The Stade De France Underground Station: Allotment and Phasing of a Complex Grand Paris Station at the Interface...
Abstract: The Stade de France underground station (SDF) is one of the 68 stations of the Grand Paris Express metro project. The design and construction of the station is shared between two separate projects: Line 16 and Line 15-East. Indeed, this station belongs, functionally speaking, to Line 15 but is to be crossed by Line 16 TBM drive. Initially, the interface was handled this way: the Line 16...
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Analytical and Numerical Study of the Support Pressure for the Stability of Shallow Underground Openings
Abstract: This paper describes the problem of assessing the stability conditions of shallow excavation of circular shape, namely circular sections of long cylindrical tunnels, in ground as it is modelled with a Mohr-Coulomb material. Firstly, the problem results in a closed-form statically admissible solution for cavities under the horizontal ground surface that allows an estimation of minimum support...
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Convergence-Confinement Method for A Circular Tunnel Supported by Shotcrete-bolt Considering Excavation Process
Abstract: Due to the contribution of anchored rock bolts, the mechanical behaviour of the reinforced rock mass has been improved, the reinforced rock mass is treated as a component of the support system and works together with shotcrete lining. Elastic method is used to calculate the composite stiffness of shotcrete-bolt support and the mechanical behaviour of the shotcrete-bolt support is analyzed in...
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The Longitudinal Curve Pipe Jacking River Crossing Technology under Complex Conditions
Abstract: The pipe jacking method across the river is suitable under the condition of the good geological condition and the low water pressure for the straight line jacking method. There is no longitudinal curve pipe jacking across the rivers for the steep slope in China. The length of the Fu Chun River pipe jacking tunnel is 658.05m in total. The water pressure is high, the slope is steep, and the...
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Research and Optimization of Wood Cushions’ Compression Deformation Characteristics in Curved Pipe Jacking
Abstract: In this paper, the authors analyzed the deformation characteristics and stress state change process of wood cushion by dividing it into two stages. Then, use the compressive strength machine of concrete blocks to test the wood cushions’ compression characteristics, fit its deformation characteristic curve. In basis of above theoretical and experimental analysis, taking a large curve pipe...
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COBie+Interpretable and Complex Spatio-Temporal Relation Reasoning Network-Based Decision Analysis Method for the...
Abstract: With the in-depth research and application of BIM-based tunnel lifecycle management, how to effectively integrate and utilize the multi-source heterogeneous data generated in the management process has been a hot issue of concern. Although relevant researchers have proposed a multi-source heterogeneous data integration method based on IFC standard and ontology in the Architecture, Engineering,...
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Prediction of TBM Performance Based on Full-Scale 3.54m Shield TBM Tunnelling Tests in Artificial Homogeneous Rock...
Abstract: The most important parameter used for predicting the TBM performance is the penetration depth(mm/rev) used in terms of advance rate. The factors which significantly affect the penetration depth are rock mass parameters, design of the cutterhead, and TBM operational parameters. In field tunnelling, it is difficult to accurately match the rock mass conditions and TBM operational data because of...
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Geotechnical Aspects of Rock Tunnel and Semi-Cavern Works for Tseung Kwan O - Lam Tin Tunnel in Hong Kong
Abstract: Tseung Kwan O – Lam Tin Tunnel (TKO-LTT) comprises the construction of a 4.2 km dual two-lane highway connecting Tseung Kwan O in the east and East Kowloon in the west. About 2.2 km of the TKO-LTT is in form of rock tunnels and semi-caverns with excavation width and height up to 30 m. Key site constraints include the existing railway tunnels, squatter village, historic buildings, high-rise...
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Challenges in Design and Construction of MRTA Tunnel and Station in Recent Bangkok Blue Line Extension Project
Abstract: Bangkok is in the state of expanding the mass rapid transit system to cope with the rapid rising and city expansion. Recently, underground MRTA lines have been constructed and are being implemented. They are located in congested city area which demands rigorous and careful design considerations to overcome constraints related to city land use regulations and restrictions on construction...
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TBM Risk Assessment and Selection for Hydropower Tunnels
Abstract: TBMs are increasingly being used for the construction of long and deep hydropower tunnels given the well-recognized higher rates of production advance that allow for early completion and the economic benefits for an early project start-up. The assessment and selection of the most appropriate type of TBM to be used should be mainly based on a comprehensive technical evaluation of all...
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Test Blast and Prediction of Vibrations, Planning for Excavation by Blasting at the Storages for Spent Nuclear Fuel...
Abstract: In order to gain knowledge about the consequences that vibration restrictions on surrounding objects has on tunnel blasting, a model for prediction of vibrations can be used. This model must consider both surrounding objects and their vibration restrictions as well as how vibrations are transmitted through the rock mass. A way to achieve this is by making a test blast in the area and then using...
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Underpinning Live MRT Tunnels, Ground Freezing and Mined Tunnelling Works at Marina Bay Station in Singapore
Abstract: Thomson-East Coast Line (TEL) is a fully underground Rapid Transit System which is approximately 43km long with 31 stations and the integration of six existing station as interchanges further enhances public transport accessibility. T226 Marina Bay Station being one of the interchanges allows pedestrians to commute between the North-South Line and Thomson East Coast line. The two stacked mined...
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Analysis and Design of Head Race Tunnel for Mangdechhu 720MW Hydropower Project, Bhutan
Abstract: Bhutan is landlocked country situated in Himalayan region of south Asia. In Himalaya complex geology is found. This region poses unexpected geological challenges and high construction risks. The Mangdechhu Hydroelectric Power Plant (HEPP) is one of the major project under Bhutan initiative to generate 10,000 MW Hydropower by 2020 with the support of Republic of Indian Government. The Mangdechhu...
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