Study on Mechanical Behavior of Jurassic Frozen Sandstone in Western China Based on NMR Porosity
المؤلفون المشاركون
Lin, Jian
Ma, Maoyan
Huang, Yishun
Cao, Guangyong
Xu, Shiliang
المصدر
العدد
المجلد 2020، العدد 2020 (31 ديسمبر/كانون الأول 2020)، ص ص. 1-11، 11ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2020-04-30
دولة النشر
مصر
عدد الصفحات
11
التخصصات الرئيسية
الملخص EN
Study of frozen rock mechanical properties is necessary for safe application of the artificial ground freezing method in excavation of Chinese western water-rich soft rock layers.
Triaxial compression tests and NMR test for samples from the western Jurassic sandstone were performed to investigate rock mechanical properties affected by low temperature and confining pressure.
The results show mechanical parameters such as peak strength, cohesion, internal friction angle, residual strength, and elasticity modulus increased with the decreasing temperature under stable pressure, and the above parameters increased with the increasing confining pressure at a certain temperature.
In particular, the growth rate of the rock strength would decline when the temperature was below −10°C in this study.
Strength attenuation coefficients increased with the decreasing temperature, which indicated higher brittleness, whereas plastic characters got more obvious with the increasing confining pressure at a stable temperature.
Furthermore, during the first two freezing stages, porosity decreased sharply with obvious increase of pore (crack) ice content, while porosity varied little at the third stage, which was the reason for the growth rate of rock strength declining with continuous low temperature from microcosmic point of view.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Ma, Maoyan& Huang, Yishun& Cao, Guangyong& Lin, Jian& Xu, Shiliang. 2020. Study on Mechanical Behavior of Jurassic Frozen Sandstone in Western China Based on NMR Porosity. Journal of Chemistry،Vol. 2020, no. 2020, pp.1-11.
https://search.emarefa.net/detail/BIM-1181549
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Ma, Maoyan…[et al.]. Study on Mechanical Behavior of Jurassic Frozen Sandstone in Western China Based on NMR Porosity. Journal of Chemistry No. 2020 (2020), pp.1-11.
https://search.emarefa.net/detail/BIM-1181549
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Ma, Maoyan& Huang, Yishun& Cao, Guangyong& Lin, Jian& Xu, Shiliang. Study on Mechanical Behavior of Jurassic Frozen Sandstone in Western China Based on NMR Porosity. Journal of Chemistry. 2020. Vol. 2020, no. 2020, pp.1-11.
https://search.emarefa.net/detail/BIM-1181549
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1181549
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر