Safe Working Practices - Safety in Construction of Underground Structures in the Complex Geology of Tehri Pump Storage Project – A Case Study

On February 17th, 2025, Tunnel boring machine "Shuangjing No.1" with an excavation diameter of 4.48 meters was off the production line at the second industrial park of China Railway Construction Heavy Industry Corporation Limited (CRCHI) in Changsha.

Sanjay Kumar Sinha, Founder and Managing Director, Chaitanya Projects Consultancy, gives an inside view of how Chaitanya Projects skilfully maintains the arterial Quazigund-Banihal Tunnel in J&K, and explains the technical intricacies

In recent years, shotcrete technology for underground rock support has seen significant advancements, particularly with the integration of digital technologies like SmartScan and other IoT-based innovations. SmartScan, a cutting-edge

Dr. Rakesh Kumar Khali, Vice President - Operations, (Tunnel, UG Structures & Hydro Power), G.R. Infraprojects Ltd., describes the construction of the Tehri Pump Storage Project (4X250 MW) and the innovative technologies in Vertical Shafts

On December 18th, 2024, the FAT ceremony of mining TBM exported to Africa was held in Changsha, China. This equipment, manufactured by China Railway Construction Heavy Industry Corporation Limited (CRCHI), will be applied in the tunnel

Dr. Rakesh Kumar Khali, Vice President Operations-Tunnel & UG Works, G R Infraprojects, and Sharanappa Yalal, Cluster Head, J&K, Hindustan Construction Company, highlight the planning process, execution challenges, innovations

Encouraged by the growing business opportunities in tunnel construction for transportation infrastructure in India, Robbins India is establishing an integrated, in-house manufacturing setup in the country. This was announced

On November 22, 2024, the open-type rock TBM with an excavation diameter of 11.93 meters (the largest of its kind in China), rolled off the assembly line of China Railway Construction Heavy Industry Corporation Limited (CRCHI).

On October 31, 2024, a super-large diameter shield machine with a maximum excavation diameter of 16.64 meters rolled off the production line in Changsha, Hunan. It will be used in the construction of the world's longest underwater highway

Tunnelling has played a crucial role in shaping India's infrastructure landscape. From the early hand-drilled techniques employed during railway construction in the 1800s to the state-of-the-art technology driving modern metro projects

Shri Nitin Gadkari, Minister of Road Transport and Highways, emphasizes the importance of robust infrastructure for economic growth and outlines the government's ambitious plans for investing in high-quality tunnels, bridges, and roads.

Bhavani Koneru, FICCI Transport Infrastructure Committee Member & Executive Vice President and Head – Urban Transit SBG, Larsen & Toubro, highlights the immense potential of tunnelling for enhancing connectivity and boosting economic activity

Lt Gen Srinivasan discusses the unique challenges of tunnelling in the fragile Himalayan terrain and showcases success stories like the Atal Tunnel and the Sela Tunnel, highlighting the government's role in promoting tunnelling advancements. Lt Gen Raghu Srinivasan, Director General, Border Roads Organization

Dinesh Chand Deshwal, Commissioner-Railway Safety (Northern Circle), Ministry of Civil Aviation, Govt of India, delves into the history of tunnelling in India, tracing its evolution from early hand-drilled techniques to modern

We are very optimistic about the growth in the Tunnelling sector - be it tunnelling in Roads, Railways, Hydro, or Border Roads. We see a potential market of 40-50 machines year on year in the next 5-6 years, but the market is still price sensitive.

Harpal Singh, Joint Chief Operating Officer, Megha Engineering and Infrastructures, highlights the practical challenges faced by construction contractors, including political interference and unskilled labor, and emphasizes the need for

Sanjay Saxena, COO Sales, Marketing & Customer Support, SANY Heavy Industry India's, specialized products for tunnel construction includes advanced excavators, piling rigs, and diaphragm wall grabs for precise and efficient operation.

Colonel Parikshit Mehra, Tunnel Expert, emphasizes the critical role of technology in managing geological uncertainties and advocates integrating dynamic monitoring systems and data analysis to optimize tunnel support systems and ensure safety.

Manitou offers compact, heavy-duty, & rotating telehandlers with special custom attachments and increased lifting capacities for efficient tunnelling. Kulwinder Kumar, National Key Accounts Manager, Manitou