Aiming at time series with strong randomicity, the GM (1,1) prediction model considering slope amendatory is brought forward;such that the precision of the grey model is greatly advanced.

• 针对强随机性的边坡监测时间序列，提出了考虑斜率修正的灰色GM(1,1)预测模型，提高了灰色模型的建模精度。