Sloboda模型在隧道围岩变形预测中的应用及其适用性分析

隧道围岩变形的监测和分析对于隧道工程的设计和施工都非常关键,鉴于Sloboda生长曲线与隧道围岩变形-时间曲线的相似性,将Sloboda模型引入到围岩变形预测中,通过围岩变形-时间曲线的拟合预测未来围岩变形发展趋势和围岩极限变形值。通过工程实例具体分析了Sloboda模型的适用性,结果表明：Sloboda模型可以较好的拟合隧道围岩变形-时间曲线；围岩变形-时间曲线的波动性以及尾部阶段发展趋势进对Sloboda模型预测效果存在影响；Sloboda模型预测效果要优于指数曲线模型和双曲线模型,具有更好的应用价值。

Sloboda model for surrounding rock deformation prediction and its applicability analysis

Monitoring and analysis of tunnel surrounding rock deformation is very critical for tunnel engineering design and construction. In consideration of the similarity between Sloboda growth curve and tunnel surrounding rock deformation - time curves, Sloboda model is introduced to forecast the surrounding rock deformation with fitting surrounding rock deformation - time curves and predicting the future development trend and the limit deformation value of surrounding rock deformation. The applicability of Sloboda model is analyzed in detail by six engineering examples. The results show that the Sloboda model can fittting the tunnel surrounding rock deformation-time curve well; the volatility of surrounding rock deformation - time curve and the development trend of its tail stage effects the prediction performance of Sloboda model; the prediction performance of Sloboda model is superior to Exponential curve model and Hyperbolic model, and has better application value.