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Papers from WTC and ITA conferences have been made available as PDF documents.
ProceedingsThere are 1984 documents.
List of endorsed conferences
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WTC
World Tunnelling Congress
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Design Aspects of Deep Excavations in Soft Clays Focusing on Retaining System
Abstract: The West Link (Västlanken) railway tunnel in Gothenburg is characterized by wide and deep excavations in soft clays. This paper focus on the excavation in the central station area of the E02 contract. The excavation, around 15m deep and 50m wide, follows a bottom-up methodology within the 100m deep Gothenburg soft clay. The retaining system, with diaphragm walls supported by temporary steel...
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Design Aspects of Large Diameter Deep Shafts with Multiple Large Openings
Abstract: Dubai’s Deep Tunnel Storm Water System (DTSWS) project is intended to collect subsurface and storm water from about 500km2 of newly urbanising communities of Dubai, and to transfer the captured flow to the sea. Four large circular shafts are designed with each shaft having a connecting chamber which collects the subsurface flow. The main shafts are typically 20-25m in diameter and 45-50m deep...
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Design Challenges for Designing Segmental Tunnel Lining for City Rail Link (CRL)
Abstract: The City Rail Link (CRL) in Auckland, New Zealand is the largest transport infrastructure project ever to be undertaken in New Zealand with project cost up to $4.4B. The CRL is 3.5km twin-tunnel underground rail tunnel underneath Auckland's city centre, between Britomart Transport Centre and Mount Eden Railway Station to better connects the Auckland rail network. This paper describes the design...
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Design Tips for Concrete in Underground Structures
Abstract: Much of this paper was originally drafted as a chapter for a tunnelling handbook, the publication of which got abandoned. With permission, some of the chapter is here re-drafted as a stand-alone paper. The word limit per paper for this conference means the original chapter content (fourteen pages) is now limited to general underground concreting and cut-and-cover work. The author is happy to...
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Design and Construction of McGill Station in Downtown Montrea l
Abstract: McGill Station is being constructed as part of the multi-billion-dollar Réseau Express Métropolitain (REM) design-build project in the Greater Montreal region. The station building is a steel framed structure built as a shallow cut-and-cover construction under an active street between two existing buildings. Located in a dense urban landscape posed unique challenges in the design and in the...
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Design and Construction of Pipe Jacking by Micro TBM for Combined Cycle Gas
Abstract: This paper presents the planning, design and construction of 3.2m diameter cooling water pipe by pipe jacking method in Hong Kong, which includes one curved line section of 380m length. The pipe alignment and method of construction was selected considering the need to mitigate the impacts on existing utilities and on existing cooling water pipes, and to eliminate the need for Emergency...
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Design and Construction of Technoparc Station in Montreal
Abstract: The design and construction method is presented for the Technoparc Station, located in Greater Montreal as a part of Réseau Express Métropolitain (REM), a light rail rapid transit system. The station is located nearly 15 m below the street at the end of a cut-and-cover approach ramp. The cut-and-cover tunnel continues beyond the station and transitions to a bored tunnel at the launch shaft. The...
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Design and Construction of a Breakout Chamber for a Large Span Cavern in
Abstract: ABSTRACT: Albert Street station is one of four new underground stations being built for Brisbane’s Cross River Rail (CRR). The rail station is part of the Tunnel & Stations Works (T&S) scope being delivered by the CBGU D&C JV* for CRR and comprises a 300m long, 24.5m wide, mined cavern for the station platform, with two station shafts and connecting adits. Access for the platform cavern...
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Design and Construction of the Marieholm Immersed Tunnel in Gothenburg, Sweden
Abstract: Since its opening in late 2020, the Marieholm Tunnel in Gothenburg provides an important road link across the Göta Älv, improving connectivity between the Port of Gothenburg and the industries of Hisingen by connecting busy interchanges on the Tingstad and Marieholm sides of the river, relieving pressure on the existing Tingsta Tunnel. The paper describes the construction sequence and...
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Design and manufacture of waterproof concrete struc tures
Abstract: Dr.-Ing. Carola Edvardsen is one of the world's leading experts on the durability of concrete. She specializes in the stability and durability assessment of large international bridge, tunnel and marine projects. For example, she was in charge of the design of the final concrete recipes for all construction projects for the DOHA metro project. As a valued member of technical and standards...
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Design and monitoring of retaining walls for TP4 railway tunnels in Copenhagen
Abstract: The TP4 Urban Tunnels contract of the Copenhagen to Ringsted high-speed railway line project comprised 3.7 km of cut & cover tunnels and ramps in urban area constructed in 2014 – 2017. The typical geology is characterised by sand/clay fill followed by glacial deposits of predominantly clay till and finally limestone. Two tunnel design sections a) sheet pile walls with 1 m embedment into...
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Design of microcement
Abstract: The Urdinbide road tunnel, inaugurated in 2018, crosses the multilayer aquifer of Autzagane, of great environmental importance, as it belongs to the hydrological system of the Urdaibai biosphere reserve, one of the most important natural areas of the Cantabrian coast. Its construction has been a technical and environmental challenge in order to preserve the existing aquifer, both during the...
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Design of porous tunnel for ecosystem protection in High Speed Two railway in UK
Abstract: The C2 Contract of HS2 covers the route from North Portal of Chiltern Tunnels to Brackley and passes through the ancient woodland Sheephouse Wood. This site of special scientific interest includes large colonies of the rare and protected Bechstein’s bat. Design aspects of UK's largest-ever porous-tunnel structure (~900m long) to protect the bats from high-speed trains running at 360km/h, the...
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Development and application of automatic concrete placement system for tunnel lining
Abstract: In recent years, the construction industry in Japan suffers a huge shortage of skilled workers due to aging population, and to make up for these problems, we are promoting the mechanization and automation of construction works. However, the placement of tunnel lining concrete is carried out in a narrow and closed traveling formwork and the compaction work by human power using internal vibrators...
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Development of Automated Angle Control System to Improve Safety And Productivity
Abstract: Increasing demand for higher quality, improved safety, and productivity, demands are driving innovation in automation and mechanization techniques. This report aims to address the shortage of skilled worker in the future as well as improvement of safety, productivity and quality. Comprehensive collection and utilization of information were carried out and with target to eliminate the over...
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Development of TBM Advanced Driving Assistance System and its field verification
Abstract: It is important to comprehensively analyze ground condition and sensor data of the machine in order to reflect in TBM tunnelling operation. Despite, TBM operation generally depends on operator’s experience based skill as it is very difficult to judge the change in ground condition and analyze the numerous data in real time. However, such operation may cause risks induced by either too...
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