The LDJ400 The LDJ400 series multi-functional tunnel boring machine is a state-of-the-art, specialized equipment designed for non-explosive tunnel excavation. It employs a high-frequency hammer or breaker hammer to effectively break rocks. Using bucket teeth or drill rods, it wedges the surrounding rock, exploiting gravity to break through. The high-frequency hammer is ideal for rocks below 40MPa, while the breaker hammer handles harder rocks. Featuring both local and wireless remote control, this versatile machine is perfectly adapted for tunnel excavations ranging from 6 to 9.5 meters. Its multifunctionality includes high-frequency rock breaking, rapid soft soil excavation, contour trimming, and spray dust removal. This makes it particularly suitable for construction in areas where blasting is prohibited, such as airports, residential areas, and wildlife reserves. The LDJ400 excels in flexibility, addressing various types of surrounding rocks while minimizing over- and under-excavation and preventing landslides and other related issues.
Excavation Efficiency: Achieve comprehensive excavation efficiency for grade IV and V surrounding rocks up to an impressive 50m³/h.
Minimal Disturbance to Surrounding Rock: The non-explosive excavation method ensures minimal disturbance to the surrounding rock.
Precise Over- and Under-Excavation Control: The entire machine's movements are precisely controlled, allowing over- and under-excavation of the contour surface to be kept within a tight margin of 20 centimeters.
Effective Spray Dust Removal: Equipped with a comprehensive dust removal spray system, the machine effectively controls dust, ensuring a safer construction environment.
High-Frequency Rock Breaking: Utilizes a patented three-toothed base or two-toothed base coupled with a high-frequency breaker hammer, delivering rapid rock breaking with strong impact.
Convenient Remote Control: All machine movements are controlled remotely, offering easy operation and the ability to flexibly adjust positions for enhanced convenience.
Diesel-Electric Dual Power System: Supports diesel-powered emergency and transmission as well as electric construction, reducing costs. It ensures no exhaust gas pollution in the tunnel, and minimizes heat accumulation during construction.
Efficient Slag Discharge: Certain models come equipped with slag collecting and discharging devices, boasting a discharge capacity of 180m³/h. This meets the rapid slag discharge needs of small-section equipment without requiring site departure.
| LDJ400A series |
| Model |
LDJ400A-1 |
LDJ400A-2 |
LDJ400A-3 |
LDJ400A-4 |
| Transport dimensions (length × width × height) |
16000×3000×3600mm |
16000×3000×3600mm |
16000×3000×3600mm |
16000×3000×3600mm |
| Total weight |
82t |
82t |
82t |
82t |
| Engine power |
176kW |
176kW |
176kW |
176kW |
| Installed electrical power |
400kW |
400kW |
400kW |
400kW |
| Operating mode |
Electric construction +diesel-powered emergency |
Electric construction +diesel-powered emergency |
Electric construction +diesel-powered emergency |
Electric construction +diesel-powered emergency |
| Control mode |
Wireless remote control + manual control |
Wireless remote control + manual control |
Wireless remote control + manual control |
Wireless remote control + manual control |
| Operating voltage |
1140V |
1140V |
1140V |
1140V |
| Operating range (width × height) |
12×10m |
12×10m |
12×10m |
12×10m |
| Slag discharge function |
/ |
/ |
/ |
/ |
| High frequency hammer model |
H5 |
H8 |
H10 |
H12 |
| Operating speed |
1.5km/h |
1.5km/h |
1.5km/h |
1.5km/h |
| Adjustable cross-section height |
6~9.5m |
6~9.5m |
6~9.5m |
6~9.5m |
| Adjustable cross-section width |
≥6m |
≥6m |
≥6m |
≥6m |
| Excavation efficiency |
0~35m³/h |
0~50m³/h |
0~60m³/h |
0~70m³/h |
| Slag discharge efficiency |
/ |
/ |
/ |
/ |
| LDJ400B series |
| Model |
LDJ400B- 1 |
LDJ400B- 2 |
| Transport dimensions (length × width × height) |
16000×3000×3200mm |
16000×3000×3200mm |
| Total weight |
82t |
90t |
| Engine power |
410kW |
410kW |
| Installed electrical power |
/ |
400kW |
| Operating mode |
Diesel-powered construction |
Electric construction + diesel-powered construction |
| Control mode |
Wireless remote control + manual control |
Wireless remote control + manual control |
| Operating voltage |
/ |
1140V |
| Operating range (width × height) |
12×10m |
12×10m |
| Slag discharge function |
/ |
/ |
| High frequency hammer model |
H8 |
H8 |
| Operating speed |
1.5km/h |
1.5km/h |
| Adjustable cross-section height |
6~9.5m |
6~9.5m |
| Adjustable cross-section width |
≥6m |
≥6m |
| Excavation efficiency |
0~50m³/h |
0~50m³/h |
| Slag discharge efficiency |
/ |
/ |
| LDJ400C series |
| Model |
LDJ400C |
| Transport dimensions (length × width × height) |
16000×2800×3200mm |
| Total weight |
95t |
| Engine power |
210kW |
| Installed electrical power |
400kW |
| Operating mode |
Electric construction + diesel powered emergency |
| Control mode |
Wireless remote control + manual control |
| Operating voltage |
1140V |
| Operating range (width ×height) |
12×10mm |
| Slag discharge function |
√ |
| High frequency hammer model |
H8 |
| Operating speed |
1.5km/h |
| Adjustable cross-section height |
6~9.5m |
| Adjustable cross-section width |
≥6m |
| Excavation efficiency |
0~50m³/h |
| Slag discharge efficiency |
180m³/h |
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