路堑

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。Alexander Smith (1875) A new history of Aberdeenshire  Robert G. Lewis et al., eds., Railway Age's Comprehensive Railroad Dictionary (Omaha, Neb.: Simmons-Boardman Books, 1984), p. 48. This reference does not include a definition for the corresponding term fill. 


挖掘路堑可以用人力锹挖、平地机、、挖掘机、钻爆法。Herbert L. Nichols, Jr., and David A. Day, P.E., Moving the Earth: The Workbook of Excavation, 5th ed. (New York: McGraw-Hill, 2005), pp. 8.16 et seq. 

路堑可分为山边绕过的与穿山而过的两种。Nichols and Day, Moving the Earth, p. 8.16.

著名路堑
 库莱布拉峡谷是巴拿马运河穿过美洲大陆分水岭的一段，长约12.6公里
 科林斯运河：希腊本土与伯罗奔尼撒半岛之间

参考文献

Category:交通工程