@arit_china: Precast concrete tunnel segments are standardized curved concrete components manufactured in factories, transported to the construction site, and then assembled ring by ring at the tail of a tunnel boring machine (TBM) to form the permanent lining structure of the tunnel, serving to withstand surrounding rock pressure, prevent water and soil seepage, and ensure the long-term stable operation of the tunnel.#concrete #construction #constructionlife #civilengineering #concretelife

ARIT CHINA
ARIT CHINA
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Monday 13 July 2026 02:52:16 GMT
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asmarte1
Asmartee :
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2026-07-13 03:16:54
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