基于Flac^(3D)的Poyting-thomson模型及其应用

Application and extablishment of Poyting-thomson model on Flac^(3D)

基于现场监测位移变形结果,以Poyting-thomson本构方程为基础求得位移解析解,反演出粉状矿体巷道的围岩参数,在Flac3D的后台上自定义Poyting-thomson本构模型,并与模型库自带模型比较模型的优劣。模拟结果表明Poyting-thomson本构模型较好反映了所模拟巷道围岩的应力、位移变化趋势及围岩情况,较其他模型适用性更好。

In view of field monitoring results of displacement and deformation,the rock parameters of powdered ore roadway was obtained by analytic solution of displacement reversion based on Poyting-thomson constitutive equation.Poyting-thomson constitutive model was defined on flac^3D and compared with self-model from the model library for its advantages and disadvantages of the model.The simulation results show that Poyting-thomson constitutive model well reflects the rock stress,displacement trends and the surrounding circumstances,more suitable than other models to simulate the powder roadway.