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flag Xiamen Metro's shield machine was moved sideways through a tight shaft, a first-of-its-kind feat, to complete Line 6.

flag The Xiamen Metro Line 6 Sunjia section completed a complex "lateral breakthrough" after a sealed shaft blocked traditional shield machine removal. flag Engineers innovated by translating the 300-ton machine laterally from the right-line to the left-line shaft using precision tracks and a reception frame with 3-millimeter flatness tolerance. flag Party member Su Zhaohu led the effort, enforcing strict inspections, managing rain-delayed shifts, and ensuring safety through on-site oversight, marking a critical milestone in the project.

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