On November 15th, 2024, the tunnel connection project between Hongqiao Reservoir and Dasha Reservoir in Zhoushan City officially commenced excavation work. The "Zhoushui" hard rock tunnel boring machine (TBM), developed by Tangxing Technology, was successfully launched. Specifically designed for complex geological conditions, the TBM is equipped with a heavy-duty hard rock cutter head capable of withstanding uniaxial compressive strengths of up to 140 MPa. The total planned excavation length is 4,200 meters.
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