成渝中线高铁蜀安隧道盾构掘进过半|人妻换人妻互换A片爽文
1. 小说 换人
中新网成都7月31日电 (记者 刘忠俊)记者7月31日从长江沿岸铁路集团四川有限公司获悉,成渝中线高铁全线控制性工程蜀安隧道盾构掘进累计达5190米,标志着这条国内最长、直径最大的土压平衡盾构隧道施工进度过半,为全线通车奠定关键基础。

蜀安隧道位于简州站至成都站区间,全长10380米,最大埋深62米,是全线控制性工程。采用“盾构法+明挖法”施工,设3座盾构工作井。中铁二局“蜀安号”与中铁十一局“成渝号”两台盾构机分别从1号、2号井相向掘进,目前已顺利突破中途节点。
该隧道穿越成都城区密集建筑区,与多条铁路、地铁、市政道路及管网交叉,对地表沉降控制要求严苛。长江沿岸铁路集团四川有限公司成渝中线指挥部指挥长王学生介绍,两台盾构机配备世界先进智能掘进系统,可提前探测复杂地质,并通过自动化检测系统实现地表沉降、管片变形的毫米级监控,确保“零沉降”穿越敏感区域。
施工中,“蜀安号”采用“超浅覆土大分体始发”工艺,完成西南首例14.5米级超大直径盾构始发,填补区域技术空白;“成渝号”则攻克受限空间组装难题,41天完成调试,创全国纪录。
作为国家“八纵八横”高铁网沿江通道的重要组成部分,成渝中线高铁建成后将串联西成、郑渝等既有线路及西宁至成都等在建线路,完善成渝地区路网,压缩两地通行时间。(完)
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