围岩变形预测的Usher模型及参数求解

Usher Model for Surrounding Rock Deformation Prediction and Solution of Parameters

针对隧道施工过程中预测围岩变形可为支护参数的确定和制定施工决策提供依据的问题,根据围岩变形—时间关系的曲线特征建立了围岩变形预测的Usher模型,并通过求解模型参数、拟合围岩变形—时间曲线推算未来围岩变形发展趋势。现场隧道围岩变形实测结果亦验证了Usher模型的可行性。

Prediction of surrounding rock deformation can provide basis for determination of supporting parameters and decision-making in the process of tunnel construction. Usher model is established to predict surrounding rock deformation on the basis of relationship between surrounding rock deformation and time. The development trend of surrounding rock deformation is estimated by solving the model parameters and fitting the curve between surrounding rock deformation and time. Field observed results of tunnel surrounding rock deformation show that the Usher model is effective.