The LDJ400 series multi-functional tunnel boring machine is a special equipment used for non-explosive tunnel excavation. This equipment mainly uses a high-frequency hammer or breaker hammer to break rocks, bucket teeth or drill rods to wedge the rock in the surrounding rock and use the gravity of the free face under the surrounding rock to automatically break through it. (High-frequency hammers are mainly used for rocks below 40MPa; breaking hammers are used for rocks with higher hardness and poor development) . The equipment features local control + wireless remote control and can be adapted to tunnel excavation of 6 to 9.5 meters. It combines the functions of high-frequency rock breaking, quick excavation of soft soil, contour trimming, spray dust removal and other functions. This makes it suitable for construction in areas where blasting is restricted (such as airports, residential areas and wildlife reserves) . It is very flexible and can meet the construction needs of various types of surrounding rocks, reducing over- and under-excavation, and avoiding landslides and other issues.
Excavation efficient: Comprehensive excavation efficiency for grade IV and V surrounding rocks up to 50m³/h;
Slight turbulence to surrounding rock: Non-explosive excavation method causes little disturbance to surrounding rock;
Precise over- and under-excavation control: The movement of the entire machine is accurately controlled, with over- and under-excavation of the contour surface controllable to within 20 centimeters;
Spray dust removal: The entire machine is equipped with dust removal spray system to effectively control dust and ensure a safe construction environment;
High-frequency rock breaking: Patented three-toothed base or two -toothed base and a high-frequency breaker hammer to achieve fast rock breaking speed and strong impact;
Remote control: All movements of the entire machine are controlled remotely, making it easy and convenient to operate. The operator can flexibly adjust the position for more convenient operation;
Diesel-electric dual power system: Diesel-powered emergency and transmission, and electric construction are supported, minimizing construction costs; no exhaust gas pollutes the air in the tunnel and heat accumulation is kept to a minimal level during construction;
Slag discharge efficient : Some models are equipped with slag collecting and slag discharging devices, with a slag discharge capacity of 180m³/h, which can meet the needs of small-section equipment for rapid slag discharging without leaving 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 
Audited Supplier 
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