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    京張高鐵全線鋪軌完成

    時間:2019-06-13 08:55:36 來源:人民鐵道網-人民鐵道報 作者:鄭晨 岳陽 魯靜
      本報北京6月12日電 (記者鄭晨 通訊員岳陽 魯靜)6月12日10時18分,在北京北站外的京張高鐵清華園隧道進口,鋪軌機牽引最后一組500米長鋼軌緩緩駛入接軌點精準落位,標志著京張高鐵全線鋪軌完成,向著開通運營目標邁出重要一步。
     
      京張高鐵是國家《中長期鐵路網規劃》中“八縱八橫”京蘭通道的重要組成部分,是京津冀協同發展的重要基礎工程,是2022年北京冬奧會的重要交通保障設施。京張高鐵起自北京北站,途經清河站、昌平站、八達嶺長城站、東花園北站、懷來站、下花園北站、宣化北站、張家口站,全長174公里。建成后,乘高鐵從北京到張家口的時間將縮短到1小時內。京張高鐵與呼張和大張兩條高鐵線路相連,對于促進京津冀協同發展、連通西部地區具有十分重要的意義。
     
      中國鐵路北京局集團有限公司所屬工電大修段沙河焊軌基地承接京張高鐵鋼軌供應總長約530公里。面對時間緊、任務重、標準高、軌種多的考驗,基地加大母材質量檢查力度,加密接頭質量抽檢頻次,嚴把出廠前接頭外觀檢測與超聲波探傷質量,將100米母材鋼軌經過4次焊接、16道工序焊成500米長鋼軌,保證了焊接鋼軌的高質量。
     
      自2018年11月1日開始鋪軌以來,京張城際鐵路有限公司組織各參建單位優化施工組織、加強資源配置,克服了工期緊迫、交叉作業、長距離大坡道鋪軌等諸多困難,順利完成了京張高鐵和崇禮鐵路的鋪軌任務。京張高鐵和崇禮鐵路(正)線鋪軌完成,為京張高鐵聯調聯試和開通奠定了堅實基礎。
     
      京張高鐵正線鋪軌310.8公里。面對鋪軌作業標準高、交叉作業面多、30‰長大坡道給鋪軌施工帶來的巨大挑戰,參建各方不斷優化方案和資源配置,創新施工工藝,改造機械設備,應用智能機器人檢測,采用機械化、自動化鋪軌機組和施工信息化等手段,大幅提高了軌道精度和施工效率。
     
      京張高鐵全線軌道鋪通是京張高鐵建設施工的標志性節點,后續將全力推進軌道精調、“四電”設備安裝及調試等,為下一步靜態驗收和聯調聯試奠定堅實基礎。
     
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    標簽:
    編輯: 何維

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