In subsidence forecast, the unequal interval GM(1,1) direct model and metabolism predicting model can get accurate and credible result, and is advised to be used in subsidence forecast of soft-base road embankment.

• 非等时距gm(,1)直接模型和等维新陈代谢模型在进行沉降预测时,能够取得准确可靠的预测结果,可以将其推广应用到软基路段的沉降预测中去。