Project Performance-Chenxing supplier of shield machine cutterhead sealing brushes

Knowledge

Our products have been widely used in urban subways, railway and highway tunnels, cross-sea and cross-river tunnels, municipal utility tunnels, hydraulic engineering projects, and other fields.

Our customers are located in major cities across China and also export to global markets including the Americas, Europe, Southeast Asia, and the Middle East. We have established strong partnerships with numerous large construction groups and tunnel-boring machine manufacturers.

All projects

Larger diameter

Longer interval

Greater burial depth

Higher water pressure

Shanghai Airport Link Line Large-Diameter Shield Tunnel Breakthrough in Soft Soil Strata, Shield Tail Brush Ensures Safe Long-Distance Shield Tunneling

Shield Tail Brush is designed for TBM sealing applications, providing reliable protection against slurry and water ingress. Its durable structure supports stable sealing performance during demanding tunnel construction.

Jinan Metro Line 4 Tunnel Breakthrough in Complex Water-Rich Sand Layer, Tail Seal Brush Ensures Safe Long-Distance Shield Tunneling

Tail seal brush is an essential sealing component used in tunnel boring machines to improve sealing performance during underground construction.

TBM Tail Sealing Brush Technology Supports Ultra-Large Diameter Shield Tunneling Projects with Reliable Sealing Performance

TBM tail sealing brush is a key component used in tunnel boring machines to provide effective sealing performance during underground construction.

High-Performance Shield Tail Brush Solves Complex Stratum Construction Problems — Case Study of Chongqing Rail Transit Line 27 Yangtze River Shield Tunnel Breakthrough

Shield sealing brush is a high-performance sealing component designed for tunnel boring machines, and durability to ensure safe and efficient underground construction operations.

Shield Tail Brush Technology Supports the Success of Cross-Sea Shield Tunneling Projects

Shield tail brush is a critical sealing component for tunnel boring machines, designed to prevent water, soil, and debris intrusion while providing excellent wear resistance, corrosion protection, and reliable performance during underground construction projects.

Shanghai Airport Link Shield Tunnel West Section Successfully Completed with Advanced TBM Tail Seal Brush Technology

The TBM tail seal brush provides excellent sealing performance, wear resistance, and durability to ensure safe and efficient tunneling operations in complex underground projects.

Guangzhou Nansha–Zhuhai Zhongshan Intercity Railway Shield Tunneling Section Completed

Shield tail brush provides durable seals, efficient cleaning and reliable protection for conveyor systems and equipment.

Steel Plate Tunnel Brush Improving Industrial Cleaning Efficiency and Conveyor System Maintenance Performance

steel plate tunnel brush delivers efficient cleaning and surface treatment performance with durable bristle structure and stable steel plate support ensuring thorough removal of debris and consistent industrial cleaning results

Advanced Shield Tail Sealing Technology Enhancing TBM Tunnel Construction Safety

Steel wire sealing brush provides effective sealing, wear resistance, and dust protection, ideal for tunneling and industrial equipment

Nepal Launches International Consultancy Tender for Kathmandu Valley Ring Railway Project

Steel wire sealing brush provides durable sealing, cleaning, and surface protection. High-strength steel wire bristles ensure long service life, efficient debris removal, and reliable performance for industrial applications

Chongtai Yangtze River Tunnel

The “Four World’s Firsts” have set a new global benchmark for high-speed railway tunnels. The tunnel boring machine (TBM) has successfully completed a single-heading tunnel crossing beneath the Yangtze River, spanning a distance of 11.3255 kilometers—the longest single-heading tunnel ever excavated worldwide. The tunnel utilizes the world’s largest-diameter high-speed railway TBM, the “Linghang,” with a maximum cutterhead diameter of 15.4 meters, creating an excavation cross-section of 186 square meters—equivalent to the height of a five-story building. The tunnel plunges as deep as 89 meters below the riverbed, enduring an ultra-high water pressure of 1.02 megapascals (equivalent to 10 atmospheres). This makes it the deepest and highest-pressure underwater tunnel in the Yangtze River basin. The project has also established a world record for high-speed railway tunnels in the 15-meter class, achieving a monthly advance rate of 718 meters—and averaging 600 meters per month. With its “strategic-level value” at its core, this project not only overcame world-class engineering challenges such as ultra-long single-heading tunneling, ultra-high water pressure, and complex geological conditions, but also achieved breakthroughs across the board in engineering technology, construction management, and ecological protection.

Zhuzhao High-Speed Railway, Jiangmen to Pearl River Delta Hub Airport Section, JJZQ-4 Contract, Guifengshan Tunnel Project

During construction, a record was set for the TBM’s daily advance of 21 meters and monthly advance of 395 meters in hard rock strata with an ultra-large diameter. Moreover, through industry-academia-research collaboration, the project successfully overcame the challenge of lacking prior experience in constructing ultra-large-diameter dual-mode shield tunnels, providing a benchmark for similar projects.

More project achievements in large-diameter tunnel boring machines

Contact Information

Address: No. 1 Tongsheng Road, South Area, Industrial Park, Gu'an County, Langfang City, Hebei Province

Phone: +86 3165927222

Email: chenxing@cxtunnel.com

Fax: +8603165927333

Mobile: +8615333366444

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