影响综放锚网顺槽围岩变形的主要力学参数辨识及应用

Recognition and Application of the Main Mechanical Parameters Affecting the Deformation of Surrounding Rock Mass of Netting and Bolting Gates in Fully Mechanized Sublevel Caving Mining

采用FEM与BEM耦合方法 ,在正演计算的基础上通过灵敏度分析 ,对影响巷道围岩变形的主要力学参数进行了辨识 ,结果表明弹性模量E为主要影响参数。在此基础上 ,讨论了采用虚拟应力边界元位移反分析法对弹性模量E进行反演识别的方法 ,并应用实例对其有效性进行了验证。

A main parameter affecting the deformation of the surrounding rock mass,i.e.elastic modulus E was found by sensitivity analysis based on the forward calculation method,and the parameter E is recognized by employing the displacement back analysis of the virtual stress boundary element method(BEM).It's verified by an in situ example.