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World Tunnelling Congress
WTCThere are 1984 documents.
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Roof Collapse in a Tunnel of Kiratpur Ner Chowuk (KNCEL), Project in State of Himachal Pradesh, India and Lesson...
Abstract: Infrastructure Industry in India has been experiencing rapid growth in its different sectors. India’s road infrastructure has seen consistent improvements in last few years. The construction of four lane highway from Kiratpur to Ner Chowk is one such project. This highway will pass through 5 numbers of tunnels which are under construction. The Tunnel no. 4, is one of the tunnels which is under...
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Prediction of Ground Movement Utilising 3D Numerical Analysis in Proximity to Deep Excavations in Urban Projects
Abstract: The compliance with strict requirements for serviceability is often of great importance for the design of urban structures. The design of tunnels/deep excavation requires a proper estimate of ground movements and settlements as well as structural forces particularly in the proximity to existing structures. This paper presents practical applications of 3D numerical models for solving...
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Shatin to Central Link Cross-Harbour Railway Immersed Tunnel
Abstract: The Shatin to Central Link is a new 17km long railway that will connect the three existing railway lines in Hong Kong to enhance connectivity of the railway network. The project includes 12 major civil construction contracts, and construction commenced in 2012. Contract 1121 involves construction of a new Immersed Tube Tunnel, and this 1.7-km long immersed tube tunnel section is the fourth...
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Cross-Border Innovations: Technologies Successfully Transferred from Shipbuilding to Tunnelling Industry
Abstract: Royal IHC is the global market leader in the construction of technologically advanced dredging and wet mining vessels. Less known may be the company’s track record in custom-built and standardized tunnelling solutions. At first sight, a tunnel boring machine may seem unrelated to shipbuilding and dredging. But there is actually a significant overlap in terms of knowledge and expertise. This...
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Design and Construction of the Island Line Underpinning at Admiralty Station, Hong Kong
Abstract: South Island Line (East) (SIL(E)) is a recent railway line extension that opened for passenger service in December 2016, connecting the current Mass Transit Railway (MTR) network from the existing Admiralty Station on Hong Kong Island to the island’s southern side. SIL(E) Contract 901 - Admiralty Integrated Station and SCL Enabling Works involved the expansion of the existing station with the...
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Maintenance Approach for Sustainable Metro Tunnels
Abstract: Dubai Metro Tunnels are designed to have a long service life of 100 years with a possibility for the owner to prolong the tunnel life for another several decades. To achieve this aim with minimum maintenance costs and disruption to the train operations over the tunnel service life, an effective broader and holistic maintenance approach needs to be implemented. Such approach is to include...
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Environmentally Friendly Tunnel Sealing and Stabilization with Novel Hybrid Injection System (HIS)
Abstract: HIS is a grouting system of high cement content modified with some reaction resin in a one-shot application. It accelerates cement sticking and hardening. Therefore, the material is not washed out and the strength development in early states is activated. With these benefits the Hybrid Injection System closes the gap between economically pure cement grouting and technical highly effective...
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Fair and Transparent Payment for Excavation and Lining Works / How Bill of Quantities are Utilized according to the...
Abstract: The FIDIC Emerald Book has been drafted with the aim of providing fair and balanced contracts for the underground industry. The excavation and lining works of a tunnel depend on the geological/geotechnical situation, which will be encountered during the execution. It is not possible to estimate the required quantities for the support beforehand and remuneration of the Contractor needs to be...
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Excavation of the Underground Power Plant of Romanche Gavet Scheme
Abstract: The excavation of the Romanche Gavet underground power station (60 000 m3), which began in May 2012, was completed on August 12, 2015. The project had to face ground model evolution during construction of the main cavern. This paper relates the chronology of events as well as methodologies used during preliminary studies but also during the reengineering phase and the consequences on the...
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Durability of Shotcrete Tunnel Linings due to Steel Fibre Corrosion in Cracks
Abstract: ABSTRACT Steel fibre reinforcement in homogenous, intact, wet-mix shotcrete show an excellent durability against corrosion. The alkaline concrete environment gives good protection but the relatively thin shotcrete layers may crack due to shrinkage and other deformations. Durability requirements today often demands service-life of more than 100 years, which is not realistic with a maintained...
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Comparison of Greenhouse Gas Emissions from Highway Tunnels of China and Norway
Abstract: New Austrian Tunneling Method (NATM) is criticized for its heavy use of concrete in thick tunnel lining, which results in more energy consumption and GHG emissions. The paper obtained the Q-values of various rock mass grades using empirical calculation formulas and calculated the GHG emissions of 1-m Chinese highway tunnel and Norwegian tunnel. The GHG emissions from tunnel lining and the...
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Structural and geotechnical design considerations and construction of Paseo del Bajo corridor in Buenos Aires
Abstract: Paseo del Bajo is an urban artery, in Buenos Aires City’s Old Town, Argentina. Its main corridor is limited to heavy duty vehicles (even carrying dangerous goods). The main structural systems adopted for it are: elevated viaduct system on both connection headers with existing highways; and trench system in the buried area of the trace (cut & cover). The project comprises a trench of 25.00...
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Fire Protection and Life Safety System of Paseo del Bajo corridor in Buenos Aires
Abstract: The main objective of this text is to describe the fire protection and life safety global system chosen for Paseo del Bajo corridor, located at Buenos Aires City Old Town, Argentina. Its main corridor is exclusive for heavy duty vehicles, mainly trucks (even carrying dangerous goods) and long-distance buses. “Paseo del Bajo” is 7.1 kilometers long, 4.0 kilometers of the project runs...
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Los Angeles Metro Historic Broadway Station
Abstract: Historic Broadway Station is one of the three underground stations that is part of the Los Angeles Metro’s $1.81-billion design-build Regional Connector Project. The project is in the heart of Downtown Los Angeles. This paper discusses the challenges faced by Metro and the Design Builder, Regional Connector Constructors (a joint Venture of Skanska USA and Traylor Bros., Inc.) during the...
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Optimization of Ring Length, Staggered Joints, Alignment Negotiation, and Virtual Build of TBM Tunnels with BIM Modeling
Abstract: The TBM-bored tunnels consist of tapered individual rings that are installed and rotated in a manner that straight and curved alignments are negotiated with the smallest deviation possible from the theoretical alignment. This deviation is an inherent feature of the segmental ring systems because a segmental ring is always built in the shape of a cylinder. Therefore, TBM guidance through a...
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Displacement Control Effect of the Ground in front of the Main Tunnel Face with the Drift Using High Rigidity...
Abstract: The fragile Nichinan Group is distributed in southern Miyazaki Prefecture, Japan. The Higashi Kyushu Expressway Yoshinomoto Tunnel is a two-lane tunnel with a length of 1,880m, which is planned in this fragile Nichinan Group. The authors applied Center Drift Advancing method using the drift with high rigidity support to the Yoshinomoto tunnel. As a result based on the measurement at the time of...
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