公路隧道开挖围岩位移预测及稳定性预报

建立了新的隧道工程开挖围岩位移预测和稳定性预报模型及其分析方法。对现有各种位移预测模型进行了评述 ;建立了适宜的围岩位移预测模型和稳定性预报模型 ;建立了不同变形特征下相应的围岩稳定性判断准则 ,提出了不同预测模型的选取标准 ;给出了隧道围岩稳定性预报方法和长期稳定指标的计算方法 ;介绍了自编的 DPSF程序 ;据此对现场隧道工程进行了位移预测和稳定性预报 ,对预报结果进行了讨论

Displacement Prediction and Stabilization Forecast of Surrounding Rock of Highway Tunnel Excavation

Analysis models of displacement prediction and stabilization forecast of surrounding rock of highway tunnel excavation are established. All kinds of prediction models are summarized, and proper models of displacement prediction and stabilization forecast set up. The assessment standard under different displacement characters is given. Choosing criteria are put forward aiming at different prediction models. The stabilization prediction method is set up. The calculation method of long-term stabilization indexes is given and a self-editing DPSF program introduced. Aiming at tunnel engineering in site, the displacement prediction and stabilization forecast are conducted and the results discussed.