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
Innovations & Contracting in Tunnelling Adaptive Measures & Climate Change
In a world where infrastructure is the linchpin of sustainable development, the fusion of innovation and contracting takes centerstage in the realm of tunneling. This article delves into the critical role of adaptive measures in addressing climate change and
Safe Working Practices - Safety in Construction of Underground Structures in the Complex Geology of Tehri Pump Storage Project – A Case Study
Dr. Rakesh Kumar Khali, Vice President - Operations, (Tunnel, UG Structures & Hydro Power), G.R. Infraprojects Ltd. highlights the technology incorporated for safety in construction during the course of the Tehri Pump Storage Project and cites examples
Tunnelling in Challenging Topography & Geological Conditions for a Railway Doubling Project in Eastern Ghats
The East Coast Railway is constructing a new railway line parallel to an existing one in the Koraput-Singapur Road section. This 164-km long railway line has 36 existing tunnels and 24 tunnels for proposed second line. The existing line was constructed
China’s first EPB TBM exported to South America was off the Production Line at CRCHI
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
Role of Drum Cutters in Tunnel Construction
Drum cutters are multifaceted tools that find extensive use in engineering and construction industries; they are indispensable for excavation and tunnelling, crushing road pavement, and in mining operations. Tunnel construction has always been
Waterproofing Tunnels
Keng Senephimmachack, Business Development Consultant, DYK Group, Canada, throws light on the importance of waterproofing tunnels, types of waterproofing membranes available, their advantages and disadvantages, and why choosing the right solution
Navigating The Subterranean
Dr. Manoj Verman, delves into the intricacies of India’s tunnelling landscape, exploring its challenges, achievements, technological advancements, highlighting the pressing need for improvements, and exploring cutting-edge technologies
TERRATEC - Hard Rock Double Shield TBM starts operations in Vishnugad-Pipalkoti Hydropower project
TERRATEC is pleased to announce that the Ø9.86m Hard Rock Double Shield TBM has commenced excavation for Vishnugad-Pipalkoti Hydropower Project in India. The TBM is currently working for Hindustan Construction, which is the main contractor of this
Carbon Saving Initiatives Boosting PSCL Development
According to Benoit de Rivaz, Technical Director, Bekaert BP Underground Solutions, carbon saving is boosting further development of Permanent Sprayed Concrete Lining (PSCL). Achieving decarbonisation in tunnel construction is not only possible
CRCHI - Mega Slurry TBM Jinghua Completes West Line Tunnel of Beijing East Sixth Ring Road Reconstruction Project
On June 28th, the Beijing East Sixth Ring Road Reconstruction Project reported that its slurry TBM “Jinghua” had successfully made a breakthrough on the west line tunnel. This marks that the first line of China’s longest shield machine expressway tunnel
Sandvik Inaugurates New Tunnelling Jumbo Drill Manufacturing Facility in Pune
In line with its ‘Make in India’ vision, Sandvik’s new and highly advanced Tunnelling Jumbo Drill manufacturing facility underscores its commitment to local manufacturing, maintaining its high-quality standards, designed for use in Indian projects
Φ14.02 TBM ‘New Crossing’ Assists the Breakthrough of Shanghai Airport’s Link Line Tunnel Section Paralleling with High Speed Railway
On 12th April 2023, the 14.02-meter large diameter CRCHI TBM named ‘New Crossing’ successfully completed its Lot II tunnel section tunnelling of the Shanghai airport link line of the first municipal railway. The Shanghai Airport Link Line Lot II is the key
CRCHI Creates World Record - Deploys 52 TBMs at Guangzhou Metro Construction
The construction project of Guangzhou Metro Line 18/22 - the largest metro investment in China - has attracted much attention. CRCHI has tailored 52 φ8.8m EPB/Slurry TBMs for the project, creating a world record of the largest TBM construction group
Managing Geological Complexity in BVC and PAC of Tehri PSP
Tehri hydroelectric project is located on the left bank of River Bhagirathi in the state of Uttarakhand. Tehri Pumped Storage Project (PSP) comprising 4 reversible pump-turbine units of 250 MW each, involves construction of an underground Machine Hall
New-Gen DRAMIX® Fiber Reinforced Precast Segment Allows Eco Efficiency & Performance
As mentioned in the fib bulletin 83 on Fibre Reinforced Precast Segment: for sustainable use of structural concrete, environmental and mechanical performances of concrete structures must have the same importance. Through sufficiently high mechanical
Breakthrough by two 15.01m Slurry TBMs of CRCHI in two projects
On March 12th 2023, the breakthrough by the largest slurry TBM in China’s Hunan Province marked the completion of the right line tunneling of the Xiangya Road river-crossing tunnel in Changsha City. It represents the largest diameter shield machine tunnel
