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    蒙華鐵路湘贛段正線箱梁架設完畢

      本報吉安6月12日電 (通訊員李建軍 吳海舟)5月底,隨著中國鐵建二十二局集團施工的蒙華鐵路周家嶺中橋最后一片箱梁平穩落在指定墩柱上,蒙華鐵路湘贛段正線箱梁架設完畢,為后續道砟鋪設及附屬工程創造了有利條件。

      中鐵二十二局集團承建的蒙華鐵路33標是全線的末尾段,管段全長15.3公里,橫跨贛江以及京九鐵路等多條既有公鐵交通干線,施工條件復雜。面對諸多挑戰,參建員工成立創新工作室,開展科研攻關,取得了深水區成孔成樁、全套管旋挖鉆機、肋安裝線形控制等一大批科研技術成果。

      中鐵二十二局集團蒙華鐵路33標項目部經理鄧壽軍介紹,吉安贛江特大橋是蒙華鐵路的重難點控制性工程,長2869.82米,位于巖溶發育地帶,安全風險高,施工難度大,常規鉆樁設備在鉆孔施工過程中反復塌孔,難以完成。項目部多次邀請國內多名著名橋梁專家進行現場指導,最終從共同設計出的3套方案中選擇最優方案,采用全套管全回轉施工設備和工藝,順利完成樁基施工,為同類地質環境施工積累了寶貴的經驗,也為蒙華鐵路全線架梁施工如期順利完成提供了堅強保障。

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