The lanhi LDJ400 Multifunctional TBM, a new machine for efficient excavation without blasting.

   I. Core Functions and Application Scenarios of the LDJ400 Multifunctional TBM.

   1. Core Functions:

   ① High-Frequency Rock Breaking: Equipped with H5/H8/H10/H12 high-frequency breakers (for rock ≤40 MPa) or breakers (for higher hardness rock), it achieves efficient rock breaking through impact and bucket tooth wedging.

   ② Multi-Process Integration: Integrates excavation, contouring, spray dust removal, and parallel mucking discharge. Some models (such as the LDJ400C) feature an integrated mucking discharge device (capacity up to 180 m³/h).

   ③ Intelligent Control: Local control and wireless remote control allow the operator to remain away from the tunnel face, improving safety.

   2. Application Scenarios: Tunnel excavation without explosives (especially suitable for explosive-free areas such as airports, residential areas, and wildlife reserves).

  II. Technical Advantages and Performance Parameters

   1. Improved Efficiency:

   ① Comprehensive excavation efficiency reaches 50 m³/h in Class IV/V surrounding rock, increasing monthly advance from the traditional 80 meters to 150 meters (nearly doubling).

   ② Case Study: In Class V surrounding rock, 172.8 m³ was excavated in 3 hours, with an advance of 1.6 meters.

  2. Precise Control:

   Over-excavation and under-excavation are controlled within 20 centimeters, reducing the risk of landslides.

  3. Environmental and Safety:

   ① Non-explosive excavation reduces surrounding rock disturbance and reduces dust by over 70% (equipped with an automatic sprinkler system).

   ② Diesel-electric dual-power: Electric operation eliminates exhaust emissions, while diesel is used for emergency relocation.

  4. Adaptability:

   The cross-section width covers 6 to 9.5 meters, and the equipment can be customized for small mines.

  III. Application Cases and Market Feedback

  1. Project Coverage: The system has been used in over 280 projects, including the Plateau Railway, the Chongqing-Kunming High-Speed Railway, and the Yipan Expressway, and has built over 1,200 tunnels.

  2. Customer Reviews: Douyin users have reported strong applicability in phosphate mines, earth tunnels, and other locations, and rental demand is strong (frequent inquiries in the comment section).

  IV. Others

   1. Technical Reserve: The company has obtained a total of 343 independent intellectual property rights, and its R&D investment has nearly tripled in three years (reaching 29.05 million yuan in 2023).

  2. Flexible Cooperation: Options include purchase, leasing, or construction contracting, with 24-hour consulting services available.

   The lanhi Multifunctional TBM, with its core technology of non-explosive excavation, significantly improves tunnel construction efficiency and safety through highly integrated and intelligent design. It has become a benchmark for innovation in underground engineering equipment in China.