Because of the properties of bess and the infiltration of water, the subgradeof highway built in Loess District lies in many problems to be solved urgently,one of which is the subgrade settlement of the highway.

• 在黄土地区修筑公路，由于黄土的特殊属性和积水入渗的作用，路基路面均存在许多亟待解决的问题，路基沉陷即是当前面临的严重问题之一。