Core Insights - The "Mozi" dual-shield hard rock tunneling machine (TBM) developed by the technology company Zhongjiao Tianhe has been launched, featuring a cutting diameter of 6.53 meters and designed for the underground project of the Shandong Zaozhuang Shanting pumped storage power station [1] - The machine introduces a groundbreaking "minimum turning radius" technology, setting a new technical limit for 6-meter class underground excavation equipment [1] Group 1 - The geological structure of the Zaozhuang Shanting pumped storage power station is complex, consisting of hard limestone, soft shale, and hidden caves, faults, and groundwater, making tunneling prone to collapses and water inflow [1] - The "Mozi" machine must navigate a complex 3.25-kilometer underground route, including multiple sharp turns with a minimum radius of 60 meters, which is rare in similar global projects [1] Group 2 - To address potential issues such as "jamming," "leakage," and "getting lost" during sharp turns, the development team customized solutions for the "Mozi" machine [2] - The machine features upgraded 20-inch cutter heads and edge cutter designs, significantly improving hard rock excavation efficiency [2] - The "inverted cone" body design, "short shield," and lightweight supporting systems, along with V-type thrust cylinders, ensure smooth turning in confined spaces [2] - An optimized multi-segment conveyor belt and movable receiving hopper resolve traditional equipment's material discharge challenges [2] - The machine is equipped with a high-precision navigation system composed of total stations and laser targets, utilizing intelligent algorithms for real-time path planning, akin to an "underground Beidou" system, achieving a minimum turning radius of 50 meters [2] Group 3 - Experts indicate that as underground space development deepens, small turning radius tunneling equipment is becoming a "new favorite" in the infrastructure sector, providing critical support for the "secondary development" of underground spaces [2] - This technology is expected to play a significant role in future applications such as subway branches, underground logistics, and deep utility corridors, facilitating a shift in tunnel engineering from "rough and ready" to "meticulous and refined" [2]