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The hard rock double shield TBM is a high-performance tunneling machine designed for complex geological conditions, capable of operating in both hard and soft rock.
⚙️ Description of Hard Rock Double Shield TBM
In tunneling through mixed rock types—whether solid layers or fractured ground—a double shield TBM offers a flexible solution. When the rock is stable, the system can be used to assemble segments while excavating. In weaker zones, the rear shield grips the tunnel lining while the front advances, keeping work stable and controlled. This design helps manage risk in variable geology.
In domestic and international numerous project construction, our company’s double shield rock TBM display super performance and achievement, including diameter 5.75 m equipment in Gansu water supply project in Yinzhao No.9 tunnel construction, it create the record of tunneling 1463 m per month.
⚙️ Technical Features of Hard Rock Double Shield TBM
Geological Class Adaptability: Class II to Class V surrounding rock
Advance Rate: ≥ 30 meters/day (under normal geological conditions)
Tunneling Mode: Double Shield / Single Shield convertible
⚙️ Features of Hard Rock Double Shield TBM
Stable performance in weak and variable geological formations
Suitable in Hard rock, soft rock, mixed lithology, fault fracture zones
High construction efficiency with enhanced safety mechanisms
⚙️ After-sales Service 400-600-4666 (24 Hour Online)
NHI's after-sales service center is equipped with a team of over 200 experienced engineers, who provide year-round services for various projects in China and overseas. They offer comprehensive on-site support, including son-site parts inspection, installation guidance, operation training, equipment commissioning, and performance testing for final acceptance. The team promptly provides technical support for any issues that arise during equipment operation and system, ensuring full-process service for users.
Built for tunneling through mixed ground, this dual mode tunnel boring machine adjusts its working method to match underground changes. It supports long-distance excavation.
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