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来自维基百科,自由的百科全书
在土木工程中,路堑(英语:Cut)是高于现路水平面的地表土石被挖走的工程。一般用于公路、铁路、运河,以截弯取直、降低纵坡。[1] [2]
挖掘路堑可以用人力锹挖、平地机、铲运机、挖掘机、钻爆法。[3]
路堑可分为山边绕过的与穿山而过的两种。[4]
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