On September 27th, China’s first EPBM to be exported to South America, manufactured by CRCHI, left the production line. With a total length of 105m and an excavation diameter of 9.8m, the TBM will be soon deployed at the first metro project in South America by a Chinese company using TBM tunneling - Lot 1 of the Santiago Metro Line 7 project in Chile.
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NBM&CW November 2023
CRCHI's Pioneer TBM Achieves Breakthrough in Guangzhou Haizhu Bay Tunnel
The first super large diameter municipal TBM tunnel in the Pearl River Basin - Guangzhou Haizhu Bay Tunnel project successfully achieved double-line breakthrough on July 15th. The super large diameter slurry TBM, named "Pioneer" and developed
Changsha Xiangya Road River-Crossing Tunnel in China Opened to Traffic
On July 5th, 2024, Changsha Xiangya Road river-crossing tunnel was opened to traffic. The tunnel is the largest diameter shield machine tunnel in the Hunan Province of China. The opening of the tunnel will effectively alleviate traffic
CRCHI Launches TBMs for World's Longest Subsea High-Speed Railway Tunnel
On May 16th, 2024, two super-large diameter slurry TBMs, developed by China Railway Construction Heavy Industry Corporation Limited (CRCHI), were launched from opposite directions in Ningbo and Zhoushan for the Jintang subsea
Building a Sustainable Future: Creating Zero-Carbon Tunnels
Despite a daunting timeline set by the Paris Accord, Zero-Carbon Tunnels are within reach if the right solutions are implemented. Ross Dimmock, Vice President – Tunnelling, Normet, suggests the steps that can be taken towards creating
CRCHI EPB Shield Machine Exported to Chile Launched
The EPB shield machine manufactured by China Railway Construction Heavy Industry Corporation Limited (CRCHI) was officially launched in Chile on May 6th, 2024. The EPB shield machine named "Matukana" symbolizes brightness and hope. Its diameter
What's Driving Growth of India's Tunnelling Industry
The growth of the tunnel construction in the country has been driven by a robust pipeline of projects and investments in setting up hydropower projects, developing urban mass rapid transit systems, improving road and rail connectivity
Silkyara Tunnel Structural Collapse: Unraveling Causes & Ensuring Safety
The Silkyara Tunnel incident has sparked questions about its safety and construction methods. It has raised concerns about the geological challenges in the region, the frequency of collapses during the tunnel's construction, and the absence
Enhancing Sustainability of Underground Works
The design of a structure, its execution quality, and the choice of systems and materials affecting maintainability of the structure, play a key role in ingraining sustainability into the project design, along with a focus on reducing
Structural & Sustainability Requirement for Precast Segment
The use of steel fibre reinforced concrete has the potential to meet low carbon lining by lowering concrete consumption and steel reinforcement saving while producing precast segments. If ductility and durability have been the key
Construction of Budhwarpeth Underground Metro Station, Pune
This paper covers the design and innovations in the construction of the Budhwarpeth underground metro station, and the challenges encountered, including adaptions to mitigate space constraints in the dense neighborhood and construction
CRCHI Underground Pipeline Network Equipment on Bangkok Power Plant Site
On February 2024, a significant breakthrough was achieved at the construction site of the Bang Pakong-south Bangkok power plant gas transmission pipeline project in Thailand. The first section of the initial phase of pipeline
Construction of Head Race Tunnel of Vishnugad-Pipalkoti HE Project
Dr. Rakesh Kumar Khali. Vice President- Operations (Tunnel & UG Works), G R Infraprojects Limited, and Prof Dr Sandeep Potnis, Professor and Head - Tunnel Engineering Program, MITWPU, highlight the issues and challenges faced during
Micro-Tunnelling Machines for Pipe Roof Support Construction
Diwakar Velu and Kim Yeow Yap, Land Transport Authority, Singapore, present a case study on the use of medium diameter (1.2m) pipe roofing for the construction of underground subway entrances (6.4m H x 8.4m W) with span lengths ranging
Maintenance of Tunnels: An Indispensable Part of Sustainability
Tunnels are an indispensable part of sustainable modern transport infrastructure. Compared to other civil structures, which often show a lifetime of 50 years only, tunnels are multi-generation structures. The aim, therefore
Sustainable Solution for Sprayed Concrete in Underground Tunnel Projects
The modern sprayed concrete systems combine high levels of Portland Cement replacement, polymer fibres, and innovative waterproofing technologies, offering possibilities to achieve over 50% reduction in carbon in tunnel linings.
Enabling Works (Temporary Structures) in Metro Rail Projects
Metro construction works are spread all over India. Apart from the design of permanent works there are several enabling/temporary structures required during construction of permanent works. Often these temporary works are not taught in school
Two heavyweight lectures at the opening ceremony, catch the highlights!
After the opening ceremony of this conference, we will have the honor to listen to the wonderful lectures delivered by Dr. Priscilla Nelson, a distinguished scholar from the United States, and Academician Zhu Hehua, a member of
Sandvik displays tunnelling jumbos, and surface drill rigs
Sandvik Mining and Rock Technology India, known for its high-tech products for mining, construction, and infrastructure industries, showcased its comprehensive solutions. Noteworthy among them were the locally manufactured
CRCHI Channel Express TBM's Subsea Tunnel Breakthrough in Singapore
November 22, 2023, saw the TWRP Pipeline-C1 Tunnel breakthrough in Singapore. The CRCHI (China Railway Construction Heavy Industry Corporation Limited) self-innovated "Channel Express" slurry TBM assisted the breakthrough