瀑布沟地下厂房施工期变形与稳定的跟踪预报

应用基于弹粘塑性势理论的有限单元方法、人工智能方法以及加锚节理力学模型,建立基于位移监测资料的岩体力学参数反演系统,根据反演参数实现对地下洞室后续施工过程中围岩稳定性与变形的预报.应用该反演预报系统,动态跟踪预报瀑布沟地下洞室群在开挖、支护过程中围岩的稳定与变形情况,对洞室群的稳定性进行了评价.

Tracking prediction of stability and deformation of Pubugou large caverns during construction period

Finite element method based on combining elastic-viscoplastic theory,artificial intelligence methods and bolted joints mechanical model is adopted to establish the feedback system of rock mechanical parameters according to the monitored displacements;and then the deformation and stability of rock mass are predicted in the following construction steps of the underground cavern.The feedback system is established to dynamically forecast the stability and deformation of rock mass in the process of excavating and supporting of Pubugou underground caverns,the achievements have been accepted in the optimization of the construction sequence and the design scheme.