The LDJ400 The LDJ400 series of multi-functional tunnel boring machines represent the pinnacle of non-explosive tunnel excavation technology. This specialized equipment employs a high-frequency hammer or breaker hammer to fracture rocks, utilizing bucket teeth or drill rods to wedge the rock and leveraging the gravity of the free face to naturally break through. For rocks below 40MPa, high-frequency hammers are ideal, while breaking hammers tackle harder, poorly developed rocks. Featuring both local and wireless remote control, the LDJ400 excels in tunnels ranging from 6 to 9.5 meters. Its versatile functions include high-frequency rock breaking, rapid soft soil excavation, precise contour trimming, and effective spray dust removal. Perfect for construction in sensitive areas such as airports, residential zones, and wildlife reserves, this machine minimizes over- and under-excavation and mitigates landslide risks, making it exceptionally adaptable to various rock types.
Excavation Efficiency: With comprehensive excavation efficiency for grade IV and V surrounding rocks reaching up to an impressive 50m³/h,
Minimal Turbulence to Surrounding Rock: Our non-explosive excavation method ensures minimal disturbance to the surrounding rock,
Precise Over- and Under-Excavation Control: The machine's movement is precisely controlled, allowing over- and under-excavation of the contour surface to be managed within a precise 20 centimeters;
Spray Dust Removal: Equipped with an efficient dust removal spray system, the LDJ400 ensures a safe and dust-free construction environment,
High-Frequency Rock Breaking: Featuring our patented three-toothed or two-toothed base and a high-frequency breaker hammer, this machine achieves rapid rock breaking with strong impact,
Remote Control: All machine movements are controlled remotely. This not only simplifies operation but allows the operator to adjust positions flexibly for maximum convenience,
Diesel-Electric Dual Power System: Supporting both diesel-powered emergency operations and electric construction, this dual power system minimizes costs, eliminates exhaust gas pollution, and reduces heat accumulation in the tunnel,
Efficient Slag Discharge: Certain models come with slag collecting and discharging devices, boasting a slag discharge capacity of 180m³/h. This ensures rapid slag removal for small-section equipment without the need to vacate the site.
| 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 |
Audited Supplier 
){kind=link}