兰合铁路控制性工程柳泉隧道贯通

新华网
Sep 29

新华社北京9月29日电 记者29日从中国铁建股份有限公司获悉,历经3年多建设,由中铁二十一局承建的兰合铁路控制性工程柳泉隧道顺利贯通。  柳泉隧道位于甘肃兰州市西固区境内,全长约2462米,穿越湿陷性黄土、断层破碎带和软岩地层,突水涌泥风险大。施工过程中,建设团队制定详尽的施工方案,对特殊地质进行超前地质监测,优化施工工序,确保隧道高质高效掘进。  兰合铁路是国家“八纵八横”高速铁路网的重要...

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