通过灰色理论中的GM(1,1)模型,对软土地区基坑开挖后引起的地表沉降进行了分析预测,其预测结果与监测结果接近。结果表明,在GM(1,1)模型中,利用初期沉降位移实测值来预测未来一定时间内的沉降位移值能够得到比较准确的预测结果,因此对指导基坑开挖和支护具有一定的作用。 Through the GM (1,1) model in gray theory, the ground settlement caused by the excavation of foundation pit in soft soil area is analyzed and predicted, and the prediction result is close to the monitoring result. The results show that in the GM (1,1) model, the prediction value of subsidence displacement in the future can be predicted by using the measured data of initial settlement displacement. Therefore, it has a certain value for the excavation and support of guiding pit effect.