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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
A new model of prediction and stability prediction of rock excavation surrounding tunnel has been established and its analytical method has been established. The existing displacement prediction models are reviewed. The appropriate displacement prediction model and stability prediction model for surrounding rock are established. The judgment criteria of surrounding rock stability under different deformation characteristics are established. The selection criteria of different prediction models The method of calculating the stability of tunnel surrounding rock and the calculation method of long-term stability index are given. The self-made DPSF program is introduced. Based on this, the displacement prediction and stability prediction of on-site tunneling project are carried out, and the prediction results are discussed