کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
11001347 1432264 2018 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Tangent modulus method - An original method to measure in-situ rock stress
ترجمه فارسی عنوان
روش مدول منحنی - یک روش اصلی برای اندازه گیری استرس سنگ در محل است
کلمات کلیدی
روش مدول تکمیلی، استرس سنگ در محل، نرخ فشار، درجه حرارت، محدود کردن فشار،
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی
This paper proposed Tangent Modulus Method (TMM) which is an improved oriented core method to determine in-situ rock stresses. In this approach, the cylindrical specimens prepared along different directions from thick core samples were uniaxially compressed twice to a given stress level. The stress value of the bending point in the first loading cycle of the stress-tangent modulus curve is considered as the normal component of the in-situ rock stress along the drilled direction of the specimen. Four types of rocks from soft porous tuff and sandstone to hard crystalline granite was investigated to evaluate the potential of this method. The effects of changes in strain rate, temperature, water content, confining and pore pressure, and stresses larger than the preload on the stress value of the bending point were experimentally investigated on preload specimens to investigate their influence on TMM. Comparison of the stress measurement results by TMM and an overcoring method at AK tunnel in Hokkaido, Japan was also performed to validate the TMM.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tunnelling and Underground Space Technology - Volume 82, December 2018, Pages 148-155
نویسندگان
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