کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6747838 | 1429518 | 2017 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Strength behaviour of sandstone subjected to polyaxial state of stress
ترجمه فارسی عنوان
رفتار نیروی ماسه سنگی که تحت شرایط تنش پلیاکی قرار می گیرد
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
زمین شناسی اقتصادی
چکیده انگلیسی
The paper presents an experimental investigation on the strength behaviour of natural rock subjected to polyaxial state of stress. The polyaxial tests were conducted on cubical specimens of sandstone obtained from the Shivpuri district in Madhya Pradesh state of India. The specimens having nominal dimensions of 100 mm Ã 100 mm Ã 100 mm were tested using a polyaxial testing machine. Twenty-five combinations of intermediate and minor principal stresses were applied and the specimens were loaded till failure occurs. It was observed that the intermediate principal stress has a substantial effect on the strength of the Shivpuri sandstone. A database of rock strength under various combinations of Ï2 and Ï3 was obtained for the Shivpuri sandstone. The database was used to study the predictability of five most commonly used strength criterion. Root mean square error (RMSE), average absolute relative error percentage (AAREP) and coefficient of accordance (COA) were used as indices for the measure of goodness of fit. It was observed that the least error in the prediction was shown by modified Mohr Coulomb criterion followed by modified Weibols and Cook criterion. A probability analysis of the error in prediction was also done.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Mining Science and Technology - Volume 27, Issue 6, November 2017, Pages 889-897
Journal: International Journal of Mining Science and Technology - Volume 27, Issue 6, November 2017, Pages 889-897
نویسندگان
Rukhaiyar Saurav, Samadhiya Narendra Kumar,