The LDJ400 The LDJ400 series multi-functional tunnel boring machine stands as a revolutionary piece of equipment for non-explosive tunnel excavation. It harnesses the power of high-frequency hammers or breaker hammers to effortlessly fracture rocks. The equipment employs bucket teeth or drill rods to wedge into the surrounding rock, utilizing gravity to naturally break through. (High-frequency hammers are ideal for rocks under 40MPa; breaker hammers are reserved for tougher rocks.) This cutting-edge machine offers both local and wireless remote control, making it versatile for tunnel diameters ranging from 6 to 9.5 meters. It integrates high-frequency rock breaking, swift soft soil excavation, precise contour trimming, and effective spray dust removal. Its design makes it perfect for construction in blasting-restricted areas like airports, residential zones, and wildlife reserves. The equipment's flexibility allows it to adapt to various rock types, minimizing over- and under-excavation and preventing landslides and related issues.
Efficient Excavation: Boasting a comprehensive excavation efficiency of up to 50m³/h for grade IV and V surrounding rocks.
Minimal Disturbance to Surrounding Rock: Our non-explosive excavation method ensures minimal disruption to the surrounding rock structure.
Precise Over- and Under-Excavation Control: The entire machine's movements are precisely controlled, maintaining a contour surface accuracy within 20 centimeters.
Effective Spray Dust Removal: Equipped with a dust removal spray system, this machine effectively controls dust, ensuring a safe construction environment.
High-frequency Rock Breaking: Featuring our patented three-toothed or two-toothed bases combined with a high-frequency breaker hammer, it delivers rapid rock breaking with strong impact.
Remote Control: All machine movements are remotely controlled, making operation easy and convenient. Operators can adjust positions flexibly for enhanced convenience.
Diesel-Electric Dual Power System: Supporting both diesel-powered emergency and transmission and electric construction, this system minimizes costs. It also reduces exhaust emissions and heat accumulation, maintaining a cleaner tunnel environment.
Efficient Slag Discharge: Certain models include slag collecting and discharging devices, boasting a discharge capacity of 180m³/h. This meets the demands for rapid slag removal in 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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