China Railway Construction Heavy Industry Corporation Limited (CRCHI) showcased its comprehensive range of equipment and products at bauma that included solutions for the whole industry chain in the field of tunnel construction.

It emerged as the world’s leading total solution provider for intelligent cluster systems of underground engineering equipment and rail transit system, with its display of full-section tunnel boring machine including the super large diameter slurry TBM ‘Jinghua’, drilling and blasting tunnel equipment, mining equipment like the coal mine multi-function bolt miner, concrete shotcreting machine, and other advanced technology and products.

The full-face tunnel boring machine range of CRCHI contains 9 series of more than 170 types of products, covering three directions of horizontal, inclined and vertical shaft, with diameters ranging from 0.5-23 meters.

China Railway Construction Heavy Industry Corporation Limited (CRCHI)Manufactured by CRCHI, the largest diameter TBM (Φ12.19m) in India , created a max. monthly advance rate of 456.72m during the construction of Mumbai coastal road tunnel.

CRCHI making continuous contributions towards global infrastructure construction and sustainable developments.
CRCHI has been focusing on design, and manufacture of non-standardized, customized high-end equipment. It is committed to becoming the world’s leading underground engineering equipment and rail transit system provider. Based on its know-how, expertise, and experience, CRCHI is at the forefront in promoting efficiency and quality of underground construction, reduce cost, and minimize impact on the environment. It is providing global customers with customized solutions, making tunnel construction smarter, safer, efficient, and more environmentally friendly. Some of the notable projects where CRCHI’s equipment have been deployed are:

Beijing East Sixth Ring Road Reconstruction Project
CRCHI’s 16.07m mega slurry TBM Jinghua is being applied in Beijing East Sixth Ring Road Reconstruction Project where it has successfully excavated 4,772 meters and reached the intermediate air shaft after 16 months since its initial excavation. It has created a 542-m excavation record in a single month. It is the first 16m-level mega slurry TBM in China.

Pearl River Estuary Tunnel
By Aug 16, 2022, China’s deepest undersea TBM ‘Shenjiang No.1’ had excavated 662 meters in the Pearl River Estuary Tunnel of the Shenzhen-Jiangmen Railway. With a maximum buried depth of 106 meters and high-water pressure construction area of 110 meters, the tunnel is currently the domestic underwater shield tunnel with the longest buried depth and the highest water pressure.

Mumbai coastal road tunnel
In India, CRCHI’s largest diameter TBM (Φ12.19m) has created a new hard rock construction record by excavating 456 meters in a single month during the construction of the Mumbai coastal road tunnel.

Zhengzhou-Chongqing high-speed railway
This project is the first to use large-scale mechanization, matching China’s superior construction and intelligent buildings. CRCHI provided complete tunnel construction intelligent equipment for the project, which is being widely applied in 21 work areas of 15 tunnels in the Hubei section of China. The number of tunnel operation personnel was greatly reduced, the environment of the tunnel construction improved, and the construction quality and anti-risk capability increased.

Rail transit equipment
The rail transit equipment segment of CRCHI has dozens of products of international advanced technology. Its rail track system products are exported to more than 30 countries in the world. More than 50 percent of the main line turnout used on the China-Laos railway line are produced by CRCHI.

The new rail transit equipment has been successfully applied in the Qingyuan Maglev tourism special line, Fenghuang Maglev sightseeing express line, and Changsha Maglev east extension line, besides other projects.

Drilling and blasting tunnel equipment
The drilling and blasting tunnel equipment includes a variety of product lines for advanced operations including excavation, ballast transportation, primary support, secondary lining, auxiliary operation, inspection, and maintenance, forming a whole series of products for the entire process of drilling and blasting in tunnel construction. These products are also widely used in railway, highway, water conservancy, municipal administration, subway, and other engineering fields.
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

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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

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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

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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

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Sela Tunnel Project - Overcoming The Impossible
The responsibility for construction and maintenance of Balipara-Charduar-Tawang (BCT) Road has been entrusted to Border Roads Organisation (BRO). The 317.520 km long road connects West Kameng and Tawang districts of Arunachal Pradesh to the rest

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Slurry TBM ‘Channel Express’ launched by CRCHI for working in Water Supply Tunnels in Singapore
On February 1, 2023, CRCHI attended the launching ceremony of its Slurry TBM ‘Channel Express’. It will be used in the construction of key water supply tunnel project TWRP Pipeline Contract 1 in Singapore where it will bore 1.6km with the inner diameter

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China’s Largest TBM - With Panda Face Emerges From Tunnel
On 12 December 2022 ‘Jinxiu’ - China’s largest EPB TBM developed by CRCHI - marked the first smooth breakthrough of the Jinxiu Tunnel, a key control project of the Chengdu-Zigong high-speed railway. Jinxiu is China’s largest diameter EPB TBM with

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STRUCINSPECT Technology Transforms Inspection of Los Angeles Metro Tunnel Network
With drones, multispectral optics, and AI, Austrian joint venture transforms tunnel inspection in the US. The world’s first infrastructure lifecycle hub taps the rapidly growing global market for infrastructure inspections. The remarkable thing about

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CRCHI showcases total solutions of Underground Engineering Equipment
China Railway Construction Heavy Industry Corporation Limited (CRCHI) brought the whole industry chain products and solutions to bauma CONEXPO INDIA 2023. CRCHI exhibited TBMs, drilling and blasting method equipment, cotton pickers, and other

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Sandvik sets up new factory; hands over first ‘made in India’ tunnelling jumbo to KSR Group, Hyderabad
In a historic event held on 30th January, 2023 Sandvik proudly presented the key of the first ‘made in India’ DT820 Tunnelling Jumbo to Mrs. and Mr. Koneru of KSR Group, Hyderabad. The machine was rolled out from Sandvik’s newly set-up state-of-the-art

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CRCHI Slurry TBM ‘Avni’ Helps Make a Breakthrough in Bangalore Metro Project
The 6.6m Slurry TBM developed by CRCHI exited the tunnel at Vellara Station, Phase II of Bangalore Metro in India, becoming the first TBM to complete the breakthrough for the whole line of the project. Avni is one of the four slurry TBMs provided by CRCHI

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The Bolter Miner - A Technology Revolution for Roadway Development in Underground Coal Mining
In India, coal is still the primary source of energy; over the past few years, there has been quantum jump in coal production level, but it was mostly due to the high percentage share from the opencast sector. The country is witnessing a fast

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Herrenknecht AG wins bauma Innovation Award 2022 for development of continuous tunnelling
Herrenknecht AG won the highly coveted award bauma Innovation Award 2022 in the category “Machine Technology” for the new development of continuous tunnelling. The award was given for the next innovation boost in the mechanized

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The Genesis of Underground Engineering
Regardless of the tunnelling technology used, tunnel designers decide the future success or failure at an early project stage. In fact, designers are the real managers of tunnel construction. The choice of design together with selected contract model is

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Managing Geological Complexity in BVC and PAC of Tehri PSP, India - A case study
Tehri hydroelectric project is located on the left bank of River Bhagirathi in the state of Uttarakhand. Tehri Pumped Storage Project (PSP) comprising 4 Nos of reversible pump-turbine units of 250 MW each, involves construction of an underground Machine Hall

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TBM driving under low overburden by adopting innovative methodology
TBM mining in urban areas particularly under low overburden (less than 0.5D, D = tunnel Dia) is a big challenge to design team as well as execution team. While working in a Lucknow metro project, the metro authorities encountered a stretch where TBM had to cross

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Tunnel Ventilation System Basic Concepts and Designing Principles
The term ventilation combines several functions such as smoke extraction, pollution ventilation, and ventilation for environmental purpose. The design of a ventilation system is usually based on three scenarios: During construction: to provide external

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CRCHI Mega Slurry TBM ‘Jinghua’ Assists the First Tunnel Section Breakthrough of Beijing East Sixth Ring Road Reconstruction Project
In September 2022, the Beijing East Sixth Ring Road Reconstruction Project reported another good news: the CRCHI mega slurry TBM ‘Jinghua’ smoothly reached the intermediate air shaft, marking the project’s achievement. The maximum excavation diameter

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TERRATEC EPBMs ready to tackle Kanpur Metro’s 1st Underground Section in India
TERRATEC celebrated the successful site acceptance testing of two 6.52m diameter Earth Pressure Balance Tunnel Boring Machines (EPBMs) for Uttar Pradesh Metro Rail Corporation (UPMRC) for Corridor-1 of Kanpur MRTS Project (KNPCC-05) in India. The two 6.52m

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