کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
804868 1468337 2012 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Zonal disintegration mechanism of cross-anisotropic rock mass around a deep circular tunnel under dynamic unloading
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Zonal disintegration mechanism of cross-anisotropic rock mass around a deep circular tunnel under dynamic unloading
چکیده انگلیسی

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.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Theoretical and Applied Fracture Mechanics - Volume 60, Issue 1, August 2012, Pages 15–22
نویسندگان
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