非等时距灰色预测模型在连拱隧道监测中的应用

摘要

Based on monitored site deformations during upper and lower bench construction of the Duimenpo multiple-arch tunnel, an unequal time-interval grey predicting model was used to forecast the deformation tendency of the surrounding rock. The predicted results were compared with those obtained by an exponential model and a hyperbolic model. It was found that the predictions were accurate.%针对对门坡连拱隧道采用中导洞上下台阶法施工过程中隧道洞内变形的现场监测信息,采用非等距灰色预测模型对连拱隧道施工过程中隧道围岩的变形趋势进行了预测,并将预测结果与由指数模型和双曲线模型得到的结果进行了对比分析.分析结果和工程实践表明,其预测结果精度高,更接近于实测值,能很好地反映连拱隧道围岩的变形规律.