The LDJ400 series multi-functional tunnel boring machine is a piece of equipment designed specifically for non-explosive tunnel excavation, playing a vital role in tunnel construction. Its main working principle involves using high-frequency or breaking hammers for rock fragmentation or utilizing the gravity effect below the surrounding rocks for automatic rock breaking. This series of equipment adopts local control combined with wireless remote control, capable of adapting to tunnel excavations ranging from 6 to 9.5 meters. It integrates functions such as high-frequency rock breaking, fast soil excavation, profile finishing, and spray dust removal, suitable for construction in areas where blasting is restricted, such as airports, residential areas, and wildlife protection zones. It demonstrates strong adaptability, meeting various rock construction requirements and reducing problems such as over-excavation and collapse.
The series includes multiple models, including LDJ400A, LDJ400B, and LDJ400C, each with different configurations and features. For instance, the LDJ400A series can be equipped with various types of hammers, and its dual-power design allows for both electric and diesel-powered operations, ensuring equipment flexibility and versatility. On the other hand, the LDJ400C series is equipped with slag removal function, with a slag removal capacity of up to 180m?/h, improving equipment efficiency in slag removal.
The performance characteristics of this series mainly include high excavation efficiency, minimal disturbance to surrounding rocks, control of over-excavation, spray dust removal, high-frequency rock breaking, remote operation, dual-power design, and high slag removal efficiency. These features make this series of equipment widely applicable in tunnel construction, having been utilized in various tunnel construction projects nationwide, including the Mianyang Municipal Tunnel, Chongqing-Kunming High-Speed Railway, Chengdu-Nanchong Expressway Expansion, Chongqing Metro Project, Tongzi Municipal Tunnel, Leshi Expressway, and Dusi Mountain Light Rail Project, among others. The LDJ400 series multi-functional tunnel boring machine has shown outstanding performance in environmental protection, improving excavation efficiency, reducing labor costs, and ensuring project quality, receiving widespread recognition.