The LDJ400 series multi-functional tunnel boring machine is a revolutionary piece of equipment designed for non-explosive tunnel excavation. Utilizing a high-frequency hammer or breaker hammer, it efficiently breaks through rock, with bucket teeth or drill rods wedging the surrounding rock. The machine leverages the gravity of the free face under the surrounding rock to facilitate automatic breakthroughs. (High-frequency hammers are ideal for rocks below 40MPa, while breaker hammers are suited for harder rocks.) Featuring both local control and wireless remote control, this versatile equipment can effectively handle tunnel excavations ranging from 6 to 9.5 meters. It integrates multiple functions such as high-frequency rock breaking, rapid soft soil excavation, precise contour trimming, and efficient spray dust removal. Perfect for construction in blast-restricted zones like airports, residential areas, and wildlife reserves, it delivers unmatched flexibility and efficiency. This machine adapts to various rock conditions, minimizing over- and under-excavation, and mitigating risks of landslides and other complications.
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 that causes minimal disturbance to surrounding rock;
Precise Over- and Under-Excavation Control: The entire machine's movement is precisely controlled, ensuring contour surface over- and under-excavation is within a 20-centimeter tolerance;
Spray Dust Removal: Features a comprehensive dust removal spray system to effectively control dust and create a safe construction environment;
High-Frequency Rock Breaking: Utilizes a patented three-toothed or two-toothed base combined with a high-frequency breaker hammer for rapid rock breaking and strong impact;
Remote Control: All machine movements are controlled remotely, offering ease of operation. Operators can flexibly adjust their position for optimal convenience;
Diesel-Electric Dual Power System: Supports diesel-powered emergency and transmission, along with electric construction, to minimize costs. This dual power system eliminates tunnel exhaust emissions and maintains minimal heat accumulation during construction;
Efficient Slag Discharge: Some models come equipped with slag collecting and discharging devices, capable of handling 180m³/h. This meets the rapid slag discharge needs of small-section equipment 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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