کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
804868 | 1468337 | 2012 | 8 صفحه PDF | دانلود رایگان |

A mechanical model is proposed to investigate zonal disintegration mechanism of cross-anisotropic rock masses around a deep circular tunnel subjected to dynamic unloading under hydrostatic pressure condition as well as the total elastic stress-field distributions. Effects of unloading rate and dynamic mechanical parameters on the zonal disintegration phenomenon of the surrounding rock masses around a deep circular tunnel as well as the total elastic stress field distributions are taken into account. Numerical computation is carried out. The location, number and size of fractured and non-fractured zones are determined using the Hoek–Brown criterion. It is found from numerical results that the location, number and size of fractured and non-fractured zones significantly depend on unloading rate and dynamic mechanical parameters of deep rock masses.
Journal: Theoretical and Applied Fracture Mechanics - Volume 60, Issue 1, August 2012, Pages 15–22