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解惑“xxxxx1819动漫”-环球时报

“羊城号”盾构xxxxx1819动漫机在广花城际铁路始发 开挖直径逾13米

来源: IT168
2024-11-03 00:21:36

最佳回答

“xxxxx1819动漫”“羊城号”盾构xxxxx1819动漫机在广花城际铁路始发 开挖直径逾13米

  中新xxxxx1819动漫网广州11月2日(王华 温美春xxxxx1819动漫 沈婕)首台以广州城市命名的“羊城号”盾构机,在历经46天组装调试后,11月2日在广州东至花都天贵城际项目(下称“广花城际”)方石站现场始发,标志着粤港澳大湾区城际铁路大盾构施工取得关键进展。

以广州城市命名的“羊城号”盾构机,11月2日在广州东至花都天贵城际项目(下称“广花城际”)方石站现场始发。(陈骥旻  摄)

  “羊城号”盾构机重达3350吨,最大开挖直径达13.56米,广花城际方石至白方盾构井区间隧道全长约1850米,最浅覆土约8.74米。隧道两侧与芳白城际隧道双线并行施工,线间距最近处仅6.8米,三条隧道同向并行掘进,互为扰动,对隧道防水、管片成型质量有着更高要求。除了面对复杂的地质条件外,盾构机需先后下穿高速、流溪河特大桥等风险源。

  广州地铁集团会同施工单位中铁建华南建设、中铁十一局等参建各方多次邀请行业专家召开始发方案评审会,针对复杂地质条件,不断完善施工方案及技术交底工作。

  “羊城号”盾构机采用泥水平衡施工模式,该模式在地质环境复杂多变的华南地区极具适应性,可减少地面沉降。同时,盾构机所搭载的超前地质预报、超前钻注浆等先xxxxx1819动漫进系统能极大增强对复杂工况的预判能力,提升了安全系数。自带的盾尾间隙自动测量、自动消防喷淋、可视化泥浆仓、中盾注泥系统等提升了盾构施工的智能化。

  广花城际白方区间采用单洞双线隧道,是广州轨道交通首次采用大盾构隧道技术构筑城际铁路区间隧道,并首次采用“纵缝斜螺栓+环缝插入式快速连接件”作为接缝连接形式,无需设置手孔,有效控制管片错台发生,大幅提高隧道成型质量。

  截至目前,广花城际(广州东至花都天贵)土建工程累计完成33%。全线7座车站,1座已封顶,6座进行土建施工;7个区间中,5个区间进行土建施工,其余进行前期准备;共12台盾构机正在掘进。(完)

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