The TBM (Tunnel Boring Machine) tunnel boring machine is an advanced underground construction device that can efficiently and safely excavate various types of geological formations. It is widely used in urban subway, railway, highway, and other tunnel construction projects.
The working principle of a TBM is based on mechanical excavation and rock-breaking technology. It primarily consists of a cutter head, thrust system, support system, and control system. The cutter head, the core component of the TBM, is equipped with multiple cutting tools to cut and break rocks. When the TBM starts, the cutter head rotates at a certain speed, cutting the rock and transporting the debris out of the tunnel via a conveyor belt. Simultaneously, the thrust system uses hydraulic cylinders to generate thrust, pushing the TBM forward. The support system reinforces and supports the tunnel walls in real-time as the TBM advances, ensuring construction safety. The control system monitors and controls various parameters of the TBM to ensure its normal operation.
The TBM tunnel boring machine offers many advantages, such as fast construction speed, high quality, and reliable safety. Compared to traditional blasting methods, the TBM reduces damage to the surrounding environment and minimizes noise and vibration impacts. Additionally, the TBM can achieve automated control, enhancing construction efficiency and management levels.
The LanHi LDJ400 series multifunctional tunneling machine is a specialized device used for non-blasting tunnel excavation. It mainly uses high-frequency hammers or breakers to impact and break rocks, bucket teeth or chisels to wedge into the surrounding rock for prying and breaking, and the free surface below the surrounding rock to automatically break the rock through gravity (the high-frequency hammer is mainly used for rocks below 40 MPa; harder, less developed rocks are handled using breakers). This machine employs local control and wireless remote control, adapting to tunnel excavations of 6 to 9.5 meters. It integrates functions such as high-frequency rock breaking, fast soft soil excavation, contour trimming, and dust suppression by spraying, making it suitable for construction in restricted blasting areas (such as airports, residential areas, and wildlife protection zones). It is highly adaptable, meets various surrounding rock construction needs, and reduces over-excavation and collapse incidents.
The TBM tunnel boring machine is an advanced tunnel construction device with broad application prospects. In future tunnel construction projects, as technology continues to advance and innovate, TBMs will play an increasingly significant role, driving the development of the tunnel construction industry.