14米级超大直径盾构机长沙下线 将用于深汕高铁龙岗隧道|精品人妻无码一区二区色欲产成人

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  中新网长沙10月24日电(向一鹏 刘福昌 赵耀荣)24日,一台开挖直径14米级、刀盘涂装“拓荒牛”图案的超大直径盾构机在湖南长沙下线,将应用于新建深圳至深汕合作区铁路(以下简称“深汕高铁”)龙岗隧道工程。

10月24日,将用于深汕高铁龙岗隧道的超大直径盾构机在长沙下线。刘福昌 摄

  这台由中铁十四局和中国铁建重工集团联合研制的装备,具有完全自主知识产权,即将整装入列。

  深汕高铁是粤港澳大湾区首条由单一城市全资建设、设计时速350公里、连接深圳核心区与深汕特别合作区的城际高速铁路。线路全长125.5公里,起自深圳枢纽西丽站,终至深汕特别合作区深汕站,连接深圳西丽站、罗湖北站、深圳坪山站、深汕站四大交通枢纽,是国家《中长期铁路网规划》“八横八纵”高铁主通道中沿海高速通道的重要组成部分,是完善粤港澳大湾区轨道交通建设的重点工程。

  据悉,由中铁十四局承建的龙岗隧道中段是全线重难点项目,隧道全长10307米,单洞双线,设计时速350公里,采用盾构和矿山法施工。其中盾构段长3685米,最大埋深97米,岩层最大强度83兆帕。

  据中铁十四局项目盾构经理蔡明聪介绍,针对施工难点量身定制的这台泥水平衡盾构机,开挖直径14.31米,最大推力21300吨,总功率12000千瓦,整机长117米,总重量3600吨,总装达到世界一流水平。刀盘采用带压复合型设计,配126把滚刀,搭载超前地质预报、刀具检测、地层特征感知等智能掘进辅助系统;配置高压中心冲刷系统,前置摄像,防止刀盘结泥饼;加装鳄式碎石机、管道二次碎石机,以提高排渣效率;配备地面远程操作系统,可以实现地上地下双控切换。

  上述项目现场负责人周胜利表示,该盾构机下线后将立即拆解,通过海陆联运的方式运输到深圳施工现场,拆块分解的132个超大部件,通过640米长的园山斜井,运至组装洞室。该组装洞目前已建成就位,可满足490吨重刀盘整体吊装等超大结构件需求。(完)

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