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关角隧道,为了与新建的新关角隧道区分,也称老关角隧道,位于中国青海省境内,是青藏铁路西宁至格尔木段的一条隧道。隧道穿过关角山,海拔3692米,全长4009米。[1]
青藏铁路西宁至格尔木段增建第二线工程正在建设的新关角隧道建成后,老关角隧道及前后展线被取直,线路缩短约36.8千米[2]。
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