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World Tunnelling Congress
WTCThere are 1984 documents.
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Impact of Pile Position on Response of Segmental Liningdue to Adjacent Loaded Pile
Abstract: This study investigates the effect of the position of the pile with respect to the tunnel in the longitudinal direction (such as pile at the center of a ring or the joint between two rings) on tunnel responses. Series of numerical analyses are performed in the study. The results indicate that the position of the pile along the tunnel longitudinal direction has a significant impact on the...
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Impacts of Surrounding Ground Stiffness Comprising
Abstract: Expansive soils are highly plastic shrink-swell character soils aiding additional stresses around in-service tunnels. The fluctuations in overburden, moisture content, stress state conditions, and surrounding ground deteriorations can induce added pressures on existing tunnels. This study is an effort to evaluate the tunnel’s long-term response subjected to expansive soils by model tests....
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Improvement of Tunnel Face Stability using Eco-Friendly Biopolymer Grouting
Abstract: The grouting method for reinforcing the tunnel and soft ground is required. It is also necessary to secure the stability of underground structures and adjacent structures. With the application of the grouting method, it is expected to increase the ground strength and prevent the leakage of water. Also, it is mainly used in parallel with the excavation method. However, the reinforcement effect...
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Improvements in 3D Geological Modelling Applied to th e Underground Works Design
Abstract: The growing need to improve the interoperability amongst different modelling software packages currently used in underground works design provided a great boost to develop three-dimensional analysis tools able to storage, manage and exchange different sources of information. The underground work design and construction requires even more high performances of ground modelling and technical...
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In situ experimental quantification of partic le velocitiesemittedby
Abstract: Vibrations generated during the excavation of an underground structure with a tunnel boring machine (TBM) can have a structural or vibro-acoustic impact. This problem, which is particularly prevalent in urban areas, is at the heart of concerns of all parties involved: owners, designers, contractors. This article summarizes few data available on this point in the literature, and completes them...
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Increase flexibility and economic viability due modular and reusable tunnel formwork
Abstract: Tunnels are different from project to project and varies therefore in geometries and sections. It is a big challenge to design an economic formwork solution, which fulfils the rough requirements of conventional tunnel projects. Combining these requirements with the principle of modularity and reusability is the base for different solutions, which help contractors to get the most economical...
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Innovative Solutions for Safe Designing and Executing of Underground Vertical â©Pressure Shaft
Abstract: Pressure shaft is one the most important parts of the hydro-power plant project along with various OHS hazards for execution team. Professional methods to reduce the hazards at its source and inherent safety-design of FARAB Co. in Uma Oya Multi-purpose Project, reduce risk to acceptable level, break the accident chain, excavation of 620m shaft and executing reverse metal lining, 6...
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Innovative Solutions for Sustainable Tunnel Segments
Abstract: The tunnelling industry continuously strives to reduce construction costs while finding more sustainable solutions. This seemingly contradictory requirement can be addressed by the benefits of macro synthetic fibre (MSF) reinforced concrete solutions. Experience from several projects has shown that MSF reinforced concrete segments exhibit robust, durable, and dependable behaviour even under...
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Innovative TBM Launch Sequence for the Suffolk Coun ty Outfall Tunnel Project
Abstract: At more than 4,300 metres in length, the Bergen Point WWTP outfall replacement tunnel was bid with the pressurized face (slurry) tunnel boring machine launched from a shaft and a starter tunnel. The bid documents prescriptively required the use of ground freezing for temporary ground support for the launch shaft and the starter tunnel with a tried and tested approach to machine launching. Post...
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Innovative and Sustainable Twin Arch Solution for Hi gh Speed 2 Green Tunnels
Abstract: EKFB-JV will build the Cut and Cover 'Green Tunnels' (GTs) as part of the High Speed 2 C2 & C3. The design of the GTs has been carried out by ASC-JV. This Paper presents the significant benefits of GTs, in terms of savings in cost, time, waste, reduced safety risk profile and improved sustainability. The design of GTs has a key objective to minimize the maintenance requirements over their total...
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Insight into Modelling Techniques for t he Analysis of Masonry Tunnels
Abstract: There are numerous historical masonry tunnels around the world which are still operational and are critical for transportation infrastructure. United Kingdom has over 630 masonry tunnels, mostly built in the Victorian era (late 19th century), stretching over 335km forming a part of the Network Rail infrastructure in addition to assets operated by other owners. There is a need to devise an...
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Interactive management of geotechnology parameters as a method of ensuring sa fety
Abstract: The construction of the metro in Moscow is being carried out in difficult geotechnical and urban planning conditions. On average, 1 running. km of the metro line under construction accounts for about 17 - 20 existing buildings and structures. During the construction of underground structures in open ditches, from 40 to 60% of the settlement of buildings located near the construction site and...
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Investigation of the Vibration Patterns Generated During TBM Excavation
Abstract: TBMs are widely utilized for infrastructure projects and to reach favourable excavation rates, selected TBMs should be operated according to the geological conditions. During excavation, cutters that are in contact with excavation face create vibration patterns which then transmitted to the cutterhead and other parts of the TBM. By recording and monitoring the vibration data and analysing the...
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Is the solution to the traffic congestion under the cities
Abstract: Traffic congestion in all megacities is a major issue, while on the other hand the concern with the environment marks a tendency to eco-friendly solution. With no possibilities to expand their network of highways and streets, more and more cities are looking under them as a potential solution for both traffic congestion and reducing the impact on the environment: building mega tunnels These...
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Jointed rock massslope stability analysis for tunnel portal development - A Case Study
Abstract: RITES was given the consultancy services to design the slope protection works around the tunnel portal T77A-P1 in DharamQuaziqund section of the 345km long prestigious USBRL project in J&K, India, for the operational safety of the railway line. This portal is at mid height of the hill and is connected with a rail bridge to its immediate vicinity. The slopes around the portal are steep and...
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Kalvebod Tunnel and Shaft Induced Settlement Automation Using Autodesk
Abstract: Growing urbanisation and the need for sustainable infrastructure solutions – for transportation, utilities, flood alleviation - bring about the need for ever more ambitious and complex tunnelling projects within urban environments. Such projects require a conscious consideration for urban heritage conservation, e.g. preservation of buildings of historic and cultural significance, as well as for...
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