以某高速公路软土路堤为工程背景，详细介绍了高速公路软土地基沉降监测和工后沉降预测分析方法，以及工后预测沉降不能满足设计要求时，如何对软土地基进行处理。根据本段软土地基处理效果可知，软土地基沉降监测及工后沉降预测分析是保证软土地基处理取得成功的必要手段。

In combination with some road embankment project built on a soft ground, it is introduced in detail the monitoring methods of soft ground and analytical methods of predicting the post-construction settlements of a road embankment. It is also explained that how to improve the soft ground when predicted settlement does not meet the design demands. According to the observed settlement information of this road embankment, it can be concluded that monitoring and predicting in time the postconstruction settlement is essential to successfully guarantee the road embankment built on soft ground.