Technical Analysis of Inclined Shaft and Tunnel Construction in 2026: Application of Electric Crawler Mucking Machines and Milling Excavators

#Industry News ·2026-04-20 13:48:21

By 2026, in the fields of inclined shaft and tunnel construction, electrified equipment is gradually replacing traditional diesel-powered equipment. Among these, the combined application of tracked electric muck loaders and milling machines has attracted the attention of engineering technicians due to their excellent adaptability to various working conditions and overall efficiency. I. Comparison of Main Equipment Technical Parameters **Typical Parameters of Tracked Electric Muck Loader (Taking Hemei Heavy Industry's Mainstream Model as an Example):** Rated Power: 45-90kW (Electric) Climbing Ability: 25°-32° (Continuous) Bucket Capacity: 0.8-2.5m³ Maximum Unloading Height: 1.8-2.6m Drive Method: AC Electric or Lithium-ion Hybrid Machine Weight: 12-28 tons **Typical Parameters of Tunnel Milling Machine:** Cutting Power: 120-260kW Cutting Head Speed: 50-80r/min Tunneling Face Width: 4.5-8.5m Working Slope: ±18° Dust Control: Wet + Dry Dual Mode II. Adaptability Analysis for Combined Working Conditions In inclined shaft construction, the tracked electric muck loader mainly undertakes the task of muck removal, while the milling machine is responsible for tunneling at the working face. The two working together can form a continuous "tunneling-muck removal-transportation" operation process. Actual test data shows: Under 25° inclined shaft conditions, the electric tracked muck loader reduces the muck removal cycle time by 28%-35% compared to diesel engine models. When used in conjunction with a milling machine, the monthly progress at the working face can be increased by 32%-48%. Overall energy consumption is reduced by 41%-57% compared to traditional diesel equipment. Dust concentration is reduced by an average of 62%. III. Key Technological Advantages Electric Drive System: Utilizes a permanent magnet synchronous motor, offering high starting torque and a wide speed range, significantly superior to the low-speed characteristics of diesel engines. Tracked Walking System: High-strength tracks + hydraulic tensioning device provide better mobility in soft rock and water-bearing strata. Intelligent Control: Some models integrate remote monitoring, fault diagnosis, and automatic deviation correction functions, enabling unattended operation. Environmental Performance: Zero exhaust emissions, greatly reducing inclined shaft ventilation energy consumption and meeting current green construction standards. IV. Key Technical Points for Selection When the inclined shaft angle is >20°, a tracked electric muck loader is preferred. When the rock hardness f≥6, the milling machine cutting power should be no less than 180kW. In environments with limited ventilation or high gas content, an explosion-proof certified electric motor must be selected. When the transport distance exceeds 300m, it is recommended to use a four-wheel drive transport vehicle to form a complete process chain. Conclusion: By 2026, the combined application of electric tracked muck loaders and milling machines had been verified in multiple inclined shaft tunnel projects, demonstrating good performance in terms of efficiency, energy consumption, and safety. With the continuous advancement of electrification technology, this combination is expected to become the mainstream technical solution for medium- and long-distance inclined shaft and tunnel construction in the future.