国道318线公路四川康定过境段郭达山隧道贯通-中新网

隧道的贯通促使整体工程建设向前迈进一大步，国道318线公路康定过境段2021年底主线将实现贯通，力争匝道等附属工程完工。康巴传媒供图　　“郭达山隧道属构造剥蚀地貌，岩性较复杂，地下水补给源较为丰富，开挖及施工中涌水量较大。

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