No document
Search & filter
Search for a publication
Search & filter
World Tunnelling Congress
WTCThere are 1984 documents.
-
The Method of the "Underwater Concrete Slab" to Prevent Water Inflow in a Cut-And-Cover Tunnel
Abstract: The Casalnuovo tunnel is a cut-and-cover tunnel of the High Speed Line Napoli-Bari. This tunnel will be excavated with a water table level higher than the bottom excavation level and so interventions to prevent water inflow into the excavation must be provided. In a stretch of about 150 m, the presence of some conflicts with other works makes the use of traditional solutions impossible and...
0,00 € -
An Application of the Observational Method to Deal with Sudden Water Level Changes: The 4 Tunnels for the Extension...
Abstract: The extension of the line 1 of the Milan Subway to the N-E outskirts of city involved the execution of 4 bored tunnels for a global length nearly 2 km in difficult geotechnical and hydrogeological context. The tunnels are built using conventional tunneling systems with a partial-face excavation. The work was found to be extremely complex for the presence of incoherent soil (sand and gravel) in...
0,00 € -
United Kingdom Leads the SFRC Usage for the Tunnel Lining Segments A Success Story: Thames Tideway Tunnel - Central...
Abstract: The Thames Tideway Scheme is designed to prevent the discharge of untreated storm water and sewerage overflows into the River Thames. This stored effluent will then travel by gravity to the Beckton Sewage Treatment works where it will be pumped back to the surface and treated in the normal manner. Starting in 2016, with an overall length of 25 km, 7.20 m Internal Diameter is due for completion...
0,00 € -
Construction Techniques of the Shallowly Buried Large Cross-Section Haicang Double-Arch Tunnel in Xiamen China
Abstract: Construction of double-arch tunnels involves in high risk due to their large span and special structural shape. This paper presents a case study on the construction techniques of a shallowly buried large cross-section double-arch tunnel. The subject is the Haicang doublearch tunnel which has an excavation cross sectional area of 498.8 m2 and is shallowly buried in weathered rock mass and mixed...
0,00 € -
Construction of a Shinkansen Tunnel Running Through a Shallow Overburden Just Under Roads with Heavy Traffic
Abstract: The Isahaya Tunnel is a 230m-long double-track section tunnel on the Kyushu Shinkansen under construction (Takeoonsen to Nagasaki). This tunnel intersects with national and city roads at a depth of approximately 3.5m. These are main roads and there are many underground utilities in this area. Our challenge in this excavation is that it does not have any effect on roads and underground...
0,00 € -
Slurry Properties and Operation Modes with VD Shield Technology to Handle Varying Ground Conditions at the...
Abstract: The Variable Density shield drives at the Forrestfield Airport Link tunnel project in Perth cross varying soil conditions composed by different types of sand formations and also by more cohesive clogging-prone formations. The present contribution will show how for the excavation under the Perth International Airport premises in such varying ground conditions there are no perfect, but rather...
0,00 € -
Underground Construction Independent Design Verification: Some Fundamentals
Abstract: In public or private large-scale projects the verification process represents the transition moment between the design phase and the subsequent processes. The verification activity, conducted by a subject with a specific profile and unrelated to the design process, checks that the project fulfils the client’s purposes requirement. In particular the design check verification scope, also...
0,00 € -
Changing the Future of Transportation in Montreal - Upgrading the Mont Royal Tunnel
Abstract: The Mont Royal Tunnel (MRT) is a railway tunnel in operation since 1918, third longest in Canada, which connects Montreal's Central Station (Gare Centrale), located Downtown Montreal, with the north side of the Island of Montreal and Laval, passing through Mount Royal. A new LRT project will use this existing double-track horseshoe tunnel (approximately 5060 m long, 9.6 m wide and 4.4 m high,...
0,00 € -
Investigation of Rehabilitation Methods of Victorian Tunnels
Abstract: The Victorian tunnels that lie on the British’s railway network have been vital to facilitating a reliable rail service across the UK for the past 150 years. However, some of these tunnels have started to cause some issues for the network. These tunnels were originally constructed using several rings of brick masonry as a lining. After many years, these brick linings have started to degrade and...
0,00 € -
Multi-Dimensional Evaluation of Tunnelling Pre-Grouting Methodology Based on Excavation and Overhead Costs...
Abstract: Water drawdown due to water ingress is a probable issue in tunnelling processes. This makes serious problems including ground settlements, environmental problems, increasing costs, excavation hazards, and several executive difficulties. In this paper, using measured data, data investigation, probabilistic and sensitivity analysis, machine learning methods, curve fitting, and several numerical...
0,00 € -
Multi-Dimensional Evaluation of Tunnelling Pre-Grouting Methodology Based on Excavation and Overhead Costs...
Abstract: Population increases and cities developments forced the governments to investing on the undergrounds structures such as buried buildings and tunnels. However, tunnels are complicated structures that their constructions accompany with several difficulties including ground settlements, water ingress, environmental problems, costs, excavation hazards and several executive difficulties. One of the...
0,00 € -
Hydro Power Tunnels - Innovation Challenges Innovation Drivers and Obstacles
Abstract: ABSTRACT : The increasing world population is in urgent need of more renewable energy. Hydro power is one of the earliest environmental friendly green energy sources. There are world famous projects, e.g. Three Gorges Project in China, of different dimensions successfully implemented. Some mega projects are on hold due to geotechnical, others due to environmental concerns. The paper is focusing...
0,00 € -
An Overview of Dalian Bay Undersea Tunnel Construction Technique
Abstract: ITA-AITES World Tunnel Congress, WTC2020 and 46th General Assembly Kuala Lumpur, Malaysia 11-17 September 2020 An Overview of Dalian Bay Undersea Tunnel Construction Technique Fanli Meng1 Haiying Zhang1,3 Xiaoshu Wang1 and Xinwei Xu2,3 Dalian Bay Undersea Tunnel Project Department, CCCC-FHCC, Dalian, China 2 Tianjin Port Engineering Institute, CCCC-FHCC, Tianjin, China 3 Tianjin Key Laboratory...
0,00 € -
Submerged Floating Tunnel Overall Structural Behaviour Mechanism Test Study 1: General
Abstract: Having completed immersed tunnel works of Hong Kong-Zhuhai-Macao Bridge in 2018, CCCC Hong Kong-Zhuhai-Macao Island-Tunnel Project established a joint research team on submerged floating tunnel (SFT). We proposed and designed a basin test (1:50) of tethered type SFT with prototype length of 1.2 km. After rounds of discussions on test significance, technical feasibility and details, the 1st...
0,00 € -
Design and Construction of Subway-municipal Underground Complex
Abstract: The Wuhan Optics Valley Plaza Complex has a total construction area of 160,000 m2, including stations and sections of three subway lines, two municipal tunnels, and comprehensive underground space. It is a super-large underground complex project. The overall design of this project is based on the solution of severe traffic congestion of the plaza. The same lines on the same floor are merged and...
0,00 € -
Geological and Geotechnical Characterization of Guadalupe Tuff Formation
Abstract: The first-ever underground rapid transit line in the Philippines, known as the Metro Manila Subway, was approved by the Philippine government for study and design, and subsequent construction. In order to proceed with the safe and cost-effective design of the subway system, a reasonably exhaustive geologic and geotechnical characterization of the subsurface conditions along the subway alignment...
0,00 €
