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来自维基百科,自由的百科全书
在土木工程中,路塹是高於現路水平面的地表土石被挖走的工程。一般用於公路、鐵路、運河,以截彎取直、降低縱坡。[1] [2]
挖掘路塹可以用人力鍬挖、平地機、鏟運機、挖掘機、鑽爆法。[3]
路塹可分為山邊繞過的與穿山而過的兩種。[4]
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