针对基坑变形的特点,在GM(1,1)模型的建模原理上建立了反向累加灰色模型。结合反向累加序列的建模特点,提出了一种对积分参数c、初始值以及背景值同时进行优化的GOM(1,1)模型。通过实例验证了本文提出的改进后的GOM(1,1)模型能够提高基坑变形的预测精度,验证了该方法的有效性和实用性。 According to the characteristics of foundation pit deformation, an inverse additive gray model is established on the principle of GM (1,1) model building. Combined with the modeling features of inverse additive sequence, a GOM (1,1) model is proposed to optimize the integral parameter c, initial value and background value simultaneously. An example is given to verify that the improved GOM (1,1) model proposed in this paper can improve the prediction accuracy of foundation pit deformation and validate the validity and practicability of the method.