The LDJ400 The LDJ400 series multi-functional tunnel boring machine is a state-of-the-art engineering marvel designed for non-explosive tunnel excavation. This advanced machinery utilizes a high-frequency hammer or breaker hammer to effortlessly fracture rocks. Bucket teeth or drill rods expertly wedge into the surrounding rock, leveraging gravity to naturally break through. For rocks below 40MPa, high-frequency hammers are used, while breaking hammers tackle higher hardness rocks. Featuring both local control and wireless remote control, this versatile machine adapts seamlessly to tunnels ranging from 6 to 9.5 meters. It excels in high-frequency rock breaking, rapid excavation of soft soil, precise contour trimming, and efficient spray dust removal, making it ideal for construction in sensitive areas like airports, residential zones, and wildlife reserves. Its flexibility ensures it meets the diverse demands of various rock types, minimizes over- and under-excavation, and prevents landslides, enhancing overall construction safety.
Excavation Efficiency: Achieves comprehensive excavation efficiency of up to 50m³/h for grade IV and V surrounding rocks.
Minimal Disturbance to Surrounding Rock: Employs a non-explosive excavation method, causing minimal disturbance to the surrounding rock structures.
Precise Over- and Under-Excavation Control: Ensures precise control of the machine's movement, maintaining over- and under-excavation within a 20-centimeter tolerance.
Spray Dust Removal: Equipped with a comprehensive dust removal spray system, effectively controlling dust to ensure a safe construction environment.
High-Frequency Rock Breaking: Utilizes a patented three-toothed or two-toothed base coupled with a high-frequency breaker hammer for rapid rock breaking and powerful impact.
Remote Control: All machine movements are remotely controlled, offering ease and convenience. Operators can adjust positions flexibly for optimal operation.
Diesel-Electric Dual Power System: Supports both diesel-powered emergency and electric-driven construction, minimizing costs and eliminating tunnel exhaust gas, thereby reducing heat accumulation during operations.
Efficient Slag Discharge: Certain models feature slag collecting and discharging devices with a capacity of 180m³/h, ensuring rapid slag removal without 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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