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解惑“男生和女生拔萝卜”-知识课堂

中国企业自研刷新男生和女生拔萝卜TBM最高日掘进纪录

来源: 羊城晚报
2024-12-18 08:40:02

最佳回答

“男生和女生拔萝卜”中国企业自研刷新男生和女生拔萝卜TBM最高日掘进纪录

  中新男生和女生拔萝卜网北京12月16日电 (记男生和女生拔萝卜者 夏宾)中新网记者16日了解到,在G219线西天山特长隧道掘进施工一线,由中交天和自主研制的“温宿号”TBM近日实现了历史单日最高掘进45.3米、单月最高掘进827米,刷新了全球同级别、同类型和同类施工条件下TBM最高日掘进纪录。

  TBM是一种全断面硬岩掘进装备,具有显著的安全、环保、优质、高效等特点,在交通、水利、能源等基础设施建设中的作用日益凸显。

  用于G219线西天山特长隧道侧平导洞掘进的“温宿号”刀盘直径8.83米,是目前穿越天山直径最大的TBM。相较于传统TBM,“温宿号”创新性采用“仰拱块铺设+常规支护”掘进方式,配置超前地质预报、CFC超前探水、岩爆探测等先进技术系统,掘进的安全保障、环保效果、成洞质量和作业效率大幅提升。

  G219线是我国目前唯一破万公里的国道,途经新疆、西藏、云南、广西四省区,快速连通中俄、中哈、中塔、中吉、中巴和中印,串联阿拉山口等9个重要口岸。西天山是横亘在“丝绸之路经济带”上最大的拦路虎,贯通包括15.7公里西天山、9.13公里莫逊山侧平导隧道在内的西天山隧道显得尤为重要。

  掘进过程中,“温宿号”需穿越全、强风化石英片岩、流纹斑岩、大理岩等坚硬地层,隧道最大埋深超2365米,预测正常涌水量超38000立方米/日、最大涌水量超130000立方米/日,面临大埋深、高水压、长距离掘进等重大难题。

  沿线还需穿越断层破碎带、影响带及节理裂隙密集带,存在突涌水、破碎带软岩大变形、岩爆等重大风险,其中岩爆地层就占掘进总长度的83%,掘进难度不言而喻。

  为解决高水压、大埋深、长距离硬岩掘进遭遇的岩爆、破碎带、软岩大变形、突泥涌水等重大难题,中交天和对为西天山隧道研制的TBM“温宿号”“温泉号”“昭苏号”进行重大技术升级,配置可扩挖式刀盘、多层次多点位注浆系统、大扭矩高功率刀盘驱动、高效掘进长寿命刀盘、快速出渣连续皮带机、超前堵水排水与高性能大方量紧急排水系统等。

  据悉,作为引领重大装备高质量发展的主力军,中交天和坚持创新驱动发展,深度服务国家重大工程和“一带一路”建设,积极推动包括TBM在内重大装备的绿色化、数智化,持续强化重大装备应用的安全、环保、优质与高效,加快培育和发展新质生产力,为全面落实“制造强国”战略提供强大技术支撑。(完)

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