A shield machine is a large-scale mechanical equipment used for tunnel excavation, especially for the construction of underground tunnels such as urban subways, highways, and railways. Shield machines with a diameter of more than 10 meters belong to large or super-large shield machines. The research and development and manufacturing of such equipment require a high degree of technical accumulation and strong production capacity. Let me introduce to you which manufacturers in the world can produce shield machines with a diameter of more than 10 meters?
1. China Railway Equipment: It is an important member of the industrial sector of China Railway Group. It has shipped more than 1,300 shield machines, and its products are distributed in more than 40 cities in China, and exported to 30 countries and regions such as Singapore, Israel, the United Arab Emirates, Italy, and Denmark. The market share has remained the first in China for ten consecutive years, and the production and sales volume has been the first in the world for five consecutive years. The company has developed large-diameter shield machines such as the "Caucasus", the world's largest diameter full-section hard rock tunnel boring machine (TBM), and the "Qilin" (diameter 12.14 meters), the largest diameter earth pressure balance shield machine independently designed and manufactured in my country at that time.
2. CCCC Tianhe: It has the ability to produce ultra-large diameter shield machines. For example, its first "Nantong-made" ultra-large diameter shield machine, the "Jingbin Synergy", has an excavation diameter of 13.8 meters.
3. China Railway Construction Heavy Industry: Many shield machine products have reached the international leading level, and it has become the world's leading underground engineering equipment industry base, tunnel boring equipment intelligent manufacturing new model industry base and rail transit equipment large-scale customized enterprise. Its earth pressure shield machine and slurry shield machine have a high maximum excavation diameter, and there are many types of cutterhead drives and rich product specifications.
4. Herrenknecht AG: Founded in 1977, its equipment can adapt to various geological conditions and covers a wide range. It has large-diameter machines with diameters ranging from 4 meters to 15.44 meters for highway, railway, subway and water supply tunnel construction. In terms of large-diameter tunnel boring machine technology, the company has rich experience in long-distance tunnels and high working pressure construction, and has provided more than 1,200 tunnel boring equipment to customers around the world.
5. Robbins Inc. of the United States: With a history of more than 50 years, it is mainly engaged in the design, manufacture, sales and leasing of underground excavation equipment. Robbins can produce full-section TBMs with tunnel excavation diameters ranging from 1.6 meters to 15 meters. Its TBM products include single-shield TBMs, double-shield TBMs, earth pressure balance TBMs, main beam tunnel boring machines and small tunnel boring machines.
6. Lovat Inc. of Canada: Founded in 1972, it integrates shield design, manufacturing, assembly and testing. It can produce various types of shield machines with diameters ranging from 1.5 meters to 14 meters, including open shield machines, semi-open shield machines, earth pressure balance shield machines, mud water pressure shield machines, etc.
7. Kawasaki Heavy Industries, Japan: Kawasaki Heavy Industries was founded in 1896. It developed from ship repair and shipbuilding, and also performed well in underground construction machinery. It has produced more than 1,200 soft rock and hard rock excavators. It has manufactured a 13.94-meter diameter shield machine for the Kanda River underground regulation project in Tokyo and a 14.14-meter diameter shield machine for the Tokyo Bay Undersea Tunnel.
8. Mitsubishi Heavy Industries, Japan: Mitsubishi Heavy Industries is a century-old enterprise group. Its Kobe Shipyard Construction Machinery Department provides soft and hard soil shield tunneling equipment all over the world. The company has manufactured many large-diameter shield machines, such as the shield machines provided for the Channel Tunnel, the Second Cross-River Tunnel Project of Yan'an East Road in Shanghai, and the Tokyo Bay Undersea Tunnel.