摘要
隧道围岩的变形是一个非常复杂的非线性演化过程,按照数学思想依据自然界生物生长动态过程建立Logistic-Verhulst模型,模拟计算围岩应力重分布过程的位移.通过在十漫公路云岭隧道实地监测验证,得到在复杂地质条件下,施工过程中软弱围岩变形的超前预报值、收敛趋于稳定的值和趋于稳定的时间,以较高的预测精度,证明了Logistic-Verhulst模型在隧道围岩位移监测应用中的可行性和可靠性.
The deformation of the surrounding rock mass of tunnel is a very complex non-linear problem. Based on the mathematic model of Logistic-Verhulst, which is applied to the biological development, the deformation and stress re-distribution of the surrounding rock mass are simulated. By this model and from the practice of Yunlin Tunnel in Shiman Highway construction, the deformation of the soft rock mass, stability value and time are predicted. The results show that the Loglstic-Verhulst model has workability and reliability in the displacement prediction of the tunnel rock mass.
出处
《昆明理工大学学报（理工版）》
CAS
2007年第5期57-60,72,共5页
Journal of Kunming University of Science and Technology(Natural Science Edition)
基金
国家自然科学基金资助项目(项目编号:50609028)
关键词
隧道围岩
LOGISTIC模型
位移监测
tunnel surrounding rock mass
Logistic model
displacement monitoring
