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Beijing Metro Line 22's First Shield Machine "Jishi No.1" Rolls off Production Line

Time: 2023-02-08
Times of browsing: 1

On February 7, TBM 'Jishi No.1' (CREC 1250) developed by China Railway Engineering Equipment Group Co., Ltd. (CREG) under CRHIC rolled off production line in Zhengzhou. With excavation diameter of 8.33 meters, the EPB shield machine is the first TBM applied to the metro line. CREG's project team has innovatively designed and carefully manufactured the equipment based on the engineering geology, thus the machine can effectively handle clogging and such complex geological conditions as confined water formation, long distance fine sand, medium gravel layer and round gravel layer.

Beijing Metro Line 22's First Shield Machine

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