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 is completed.

TBM Jinghua is the first China-made 16 m-level shield machine. Manufactured by China Railway Construction Heavy Industry Corporation Limited (CRCHI), the TBM came off the assembly line on September 27th 2020 at the CRCHI Changsha headquarters. With an excavation diameter of 16.07m, this 4,300-tonne, 150m-long slurry TBM is the first of its kind to have been made in China.

the Beijing East Sixth Ring Road Reconstruction ProjectTBM Jinghua made breakthrough of the west line tunnel of Beijing East Sixth Ring Road Reconstruction Project

The Beijing East Sixth Ring Road Reconstruction Project extends from the south (starting at the Beijing-Harbin Expressway) to the north (ending at Luyuanbei Street). It is designed with a speed limit of 80 km per hour and has a total length of approximately 16 km. The underground section of the project is about 7.4 km long - all of which is constructed using the TBM. The tunnels have a separated twin-tunnel configuration, each divided into three layers. The upper level serves as a smoke extraction channel, the middle level accommodates a three-lane expressway, and the lower level serves as an evacuation and rescue channel. With a maximum depth of 75 meters, it is the deepest underground tunnel in Beijing.

The TBM tunnel construction on this project faced numerous challenges, including the use of a mega large diameter machine over a long distance at an ultra-deep depth in a highly sensitive environment. The machine was equipped with a host of innovative technologies and numerous independent core technologies to ensure rapid and safe tunnelling through complex geological conditions, mainly composed of sandy soil, water-rich and high-density sand, interactive layers of silt and cohesive soil.

the Beijing East Sixth Ring Road Reconstruction ProjectManufactured by CRCHI, the TBM Jinghua was off the assembly line on September 27th, 2020 at CRCHI Changsha headquarters

Since the launch of the Jinghua TBM in May 2021, the TBM crews reported an outstanding performance with a maximum daily advance rate of 24 meters and a maximum monthly advance rate of 542 meters. On September 25th, 2022, the TBM reached the intermediate air shaft with precise breakthrough and no problems.

The Beijing East Sixth Ring Road Reconstruction Project is a landmark project in the construction of the city’s sub-center. After opening to traffic, the project will promote the integration of Tongzhou District and the administrative office area of the sub-center, significantly improve Beijing’s transportation services, promoting the integration of transportation in the Beijing-Tianjin-Hebei Region, and the creation of a comprehensive transportation system.
NBM&CW, August 2023
What’s Driving Growth of India's Tunnelling Industry

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

Read more ...

Silkyara Tunnel Structural Collapse: Unraveling Causes & Ensuring Safety

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

Read more ...

Enhancing Sustainability of Underground Works

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

Read more ...

Structural & Sustainability Requirement for Precast Segment

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

Read more ...

Construction of Budhwarpeth Underground Metro Station, Pune

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

Read more ...

CRCHI Underground Pipeline Network Equipment on Bangkok Power Plant Site

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

Read more ...

Construction of Head Race Tunnel of Vishnugad-Pipalkoti HE Project

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

Read more ...

Micro-Tunnelling Machines for Pipe Roof Support Construction

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

Read more ...

Maintenance of Tunnels: An Indispensable Part of Sustainability

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

Read more ...

Sustainable Solution for Sprayed Concrete in Underground Tunnel Projects

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.

Read more ...

Enabling Works (Temporary Structures) in Metro Rail Projects

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

Read more ...

Two heavyweight lectures at the opening ceremony, catch the highlights!

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

Read more ...

Sandvik displays tunnelling jumbos, and surface drill rigs

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

Read more ...

CRCHI Channel Express TBM's Subsea Tunnel Breakthrough in Singapore

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

Read more ...

Innovations & Contracting in Tunnelling Adaptive Measures & Climate Change

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

Read more ...

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

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

Read more ...

Tunnelling in Challenging Topography & Geological Conditions for a Railway Doubling Project in Eastern Ghats

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

Read more ...

China’s first EPB TBM exported to South America was off the Production Line at CRCHI

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

Read more ...

Role of Drum Cutters in Tunnel Construction

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

Read more ...

Waterproofing Tunnels

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

Read more ...

To get latest updates on whatsapp, Save +91 93545 87773 and send us a 'Saved' message
Click Here to Subscribe to Our eNewsletter.