کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7206457 1468687 2016 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of scale and matedness on the peak shear strength of fresh, unweathered rock joints
ترجمه فارسی عنوان
تأثیر مقیاس و ماتسنس بر مقاومت برشی حداکثر اتصالات سنگ تازه و غیرقابل نفوذ
کلمات کلیدی
مفاصل سنگ قدرت برشی قله، مرطوب اثر مقیاس،
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی
It is widely recognized that the mechanical parameters for unfilled and rough rock joints, such as the peak shear strength, can vary with scale. However, due to contradictory results concerning the extent and nature of the scale effect reported in the literature, it is still a debated subject. A conceptual model developed by Johansson and Stille 2014 suggests how roughness and matedness at different scales influences the peak shear strength for fresh, rough and unweathered joint. However, the model's ability to predict how the roughness and matedness affects the peak shear strength at different scales was not verified. The aim of this paper is to investigate the ability of the conceptual model to estimate the peak shear strength at different degrees of matedness and scales. A series of direct shear test were carried out at two different scales and two different degrees of matedness. The peak shear strength from the tests was compared to the peak shear strength calculated with the conceptual model. The results showed that the model can predict the peak shear strength for both the perfectly mated and the unmated joints. No scale effect was observed in the shear tests, which is in line with the predictions using the model. The influence of matedness in combination with scale might explain some of the contradictory findings regarding the scale effect.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Rock Mechanics and Mining Sciences - Volume 82, February 2016, Pages 36-47
نویسندگان
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