کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6773805 | 1431931 | 2018 | 15 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Research on gas migration properties in a saturated bentonite/sand mixture under flexible boundary conditions
ترجمه فارسی عنوان
بررسی خواص مهاجرت گاز در یک مخلوط بنتونیت / ماسه اشباع شده در شرایط مرزی انعطاف پذیر
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کلمات کلیدی
مخازن زمین شناسی، ترکیب بنتونیت / ماسه، مهاجرت گاز دستیابی به موفقیت گاز،
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی
Gas migration/breakthrough in saturated bentonite is an important issue for the evolution of the sealing ability of the engineered barrier in deep geological repositories. The main contribution of our study is to provide insights into the water and gas transport properties in a compacted bentonite/sand mixture, which was wrapped by a flexible Viton⢠membrane directly before being put into a triaxial cell. The experimental results indicate that the water permeability is very low and the magnitude is in the order of 10â20â¯m2. Gas breakthrough tests show that no continuous gas flow was detected during the entire gas breakthrough test (until the gas pressure of 10â¯MPa), which indicates that the compacted bentonite/sand mixture has a good sealing ability after full saturation. Another important finding is that the gas migration properties are closely related to the stress state around the sample, the internal pore fluid pressure, and the creep effects caused by the two factors.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Soils and Foundations - Volume 58, Issue 1, February 2018, Pages 97-109
Journal: Soils and Foundations - Volume 58, Issue 1, February 2018, Pages 97-109
نویسندگان
Jiang-Feng Liu, Shuai-Bing Song, Hong-Yang Ni, Xu-Lou Cao, Hai Pu, Xian-Biao Mao, Frédéric Skoczylas,