Tunneling Boring Machine

  • Excavation diameter—4m. Length—72.5m. Weight—220t.
  • Equipped with heavy-duty hard rock cutterhead, multi-section shield, three-dimensional mucking system and variable support system.
  • With the advantages of superior safety, great flexibility, high rock-breaking performance, flexible transfer, minimal environmental effect, etc.

Specification

Product Type Specification
excavation diameter 4000mm
overall length 72.5m
main drive power 6*45kw
cutter type disc cutter
stepover 1m
total thrust 800t
mucking method downward mucking system

Frequently Asked Questions

What are the main advantages of using Tunnel Boring Machines for underground construction?

Tunnel Boring Machines offer superior safety, great flexibility, high rock-breaking performance, and minimal environmental impact. They enable efficient excavation with less disturbance to surface structures and surrounding areas, making them ideal for urban and environmentally sensitive projects.

What geological conditions can Tunnel Boring Machines handle? 

TBMs are designed to handle various challenging geological conditions including hard rock formations, limestone, tuff strata, and highly abrasive rock with hardness ranging from 30 to 180 MPa. They can effectively excavate through medium-weathered to strong rock formations with appropriate cutterhead configurations.

What are the key technological features of modern Tunnel Boring Machines?

Modern TBMs are equipped with advanced technologies including intelligent guidance systems, remote operation and control, high-pressure sealing systems, three-dimensional mucking systems, variable support systems, and smart warning systems. These features ensure precise control, enhanced safety, and improved excavation efficiency.

How do Tunnel Boring Machines minimize environmental impact during construction? 

TBMs minimize environmental impact through enclosed excavation processes, controlled mucking systems, and minimal surface disturbance. The machines operate with reduced noise and vibration compared to traditional methods, and can work continuously with less disruption to surrounding communities and ecosystems.

What makes Tunnel Boring Machines suitable for long-distance tunneling projects?

TBMs are specifically designed for long-distance excavation with features such as reliable main drive systems, efficient material transportation, segment assembly capabilities, and continuous operation ability. They can handle projects ranging from hundreds to thousands of meters with consistent performance, making them ideal for utility tunnels, water supply projects, and transportation infrastructure.