
5月5日,国道347线茂红路提升改建工程最后一座隧道——黑水隧道顺利贯通。
黑水隧道位于黑水县芦花镇境内,为绕避城镇而建。隧道起止里程为 K90+185至K92+155,全长 1970m。隧道进口高程 2314.91m,出口高程 2334.61m,最大埋深约 600m,以Ⅳ级围岩为主。

在州委州政府的关心支持下,在州交通运输局的指导下,在全体参建人员共同努力下,阿坝州公路管理局狠抓安全、质量和标准化建设,克服了地质复杂、工期紧张等诸多困难,经历360天的艰苦作业,圆满完成了各项任务,隧道安全顺利贯通。
随着黑水隧道的贯通,标志茂红路主体工程进入最后收尾阶段,为2022年10月份工程交工验收奠定坚实基础。
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