کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
810212 1468751 2008 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A modified Hoek–Brown failure criterion for anisotropic intact rock
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
پیش نمایش صفحه اول مقاله
A modified Hoek–Brown failure criterion for anisotropic intact rock
چکیده انگلیسی

The Hoek–Brown criterion parameters (σci, mi and s) are significantly influenced by the strength anisotropy of intact rock. In the present study, the criterion was modified by incorporating a new parameter (kβ) to account for the effect of strength anisotropy, thus being able to determine the strength of intact anisotropic rock under loading in different orientations of the plane of anisotropy. The range of the parameter (kβ) for the rocks tested has been analytically investigated by carrying out triaxial tests, in different orientations of the foliation plane. The proposed modification was studied for metamorphic rocks (gneiss, schist, marble), but could also be applied to other rock types exhibiting “inherent” anisotropy, e.g. sedimentary as well as igneous rocks. The proposed modified criterion is intended for use for prediction of strength of intact rock, but can also be extended to rock masses.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Rock Mechanics and Mining Sciences - Volume 45, Issue 2, February 2008, Pages 223–234
نویسندگان
, ,