Abstract: According to the features of displacement-time curves, we use grey Verhulst model of creature increase to forecast the stable displacement and use Verhulst inverse-function model to forecast the unstable time of highway tunnel surrounding rock. Examples are applied to check and prove the prediction models,the construction is controlled

Key words: highway tunnel, grey Verhulst, Verhulst inverse-function model, displacement prediction

摘要： 从公路隧道开挖围岩变形位移历时曲线的特征出发，采用灰色Verhulst生物增长模型来预报其围岩变形的 趋稳位移，用Verhu1st反函数模型来预报围岩变形的突发失稳时间；实例研究结果表明，它们都具有较高的预报 精度。

关键词: 公路隧道, 灰色Verhulst模型, Verhulst反函数模型, 位移预报