Highway embankment is an important internal component in road use, it ensures the normal use and transport safety. However, prolonged use will result in a large extent damage to the embankment, which affect the life of the whole road, includes design and construction problems, as well as late protection reasons. This problems must be paid attention to extend the life of the road.%公路路基是道路使用中比较重要的内部构件，它保证了道路的正常使用和运输安全，但是，长时间的使用会对路基造成很大程度上的破坏，影响整体道路的使用寿命，其中既有设计施工中的问题，也有后期防护的原因，在道路建设中必须重视这一问题，从而延长道路的使用寿命。
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