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Research on Stress Threshold of Deep Buried Coal Rock under Quasi-Static Strain Rate Based on Acoustic Emission
المؤلفون المشاركون
Zhao, Xiaoping
Zheng, Yu
Hao, Qijun
Liu, Xiaohui
Hu, Ankui
المصدر
العدد
المجلد 2020، العدد 2020 (31 ديسمبر/كانون الأول 2020)، ص ص. 1-13، 13ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2020-09-21
دولة النشر
مصر
عدد الصفحات
13
التخصصات الرئيسية
الملخص EN
The deformation and failure process of coal rock under different strain rates is a significant challenge which must be solved in dynamic excavation.
It is important to study the influence of strain rate on the evolution of coal rock crack.
The triaxial compression tests and acoustic emission tests under the strain rate of 10−5 s−1 to 10−3 s−1 were conducted on coal rock using MTS 815 hydraulic servo-control testing machine.
During the loading process, acoustic emission energy and spatial distribution have obvious stage characteristics.
The damage variable is defined by acoustic emission energy, and the rate of damage evolution is obviously affected by the strain rate.
Based on stage characteristics of acoustic emission energy, spatial distribution, and damage evolution, the use of damage evolution curve to determine stress threshold is proposed.
In order to verify the rationality of the damage evolution method, the stress threshold values determined by damage evolution method and existing method are compared and analyzed.
In order to study the effect of strain rate and confining pressure on the stress threshold, the stress thresholds under uniaxial and triaxial stress states at different strain rates were analyzed.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Hao, Qijun& Liu, Xiaohui& Hu, Ankui& Zheng, Yu& Zhao, Xiaoping. 2020. Research on Stress Threshold of Deep Buried Coal Rock under Quasi-Static Strain Rate Based on Acoustic Emission. Advances in Civil Engineering،Vol. 2020, no. 2020, pp.1-13.
https://search.emarefa.net/detail/BIM-1125549
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Hao, Qijun…[et al.]. Research on Stress Threshold of Deep Buried Coal Rock under Quasi-Static Strain Rate Based on Acoustic Emission. Advances in Civil Engineering No. 2020 (2020), pp.1-13.
https://search.emarefa.net/detail/BIM-1125549
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Hao, Qijun& Liu, Xiaohui& Hu, Ankui& Zheng, Yu& Zhao, Xiaoping. Research on Stress Threshold of Deep Buried Coal Rock under Quasi-Static Strain Rate Based on Acoustic Emission. Advances in Civil Engineering. 2020. Vol. 2020, no. 2020, pp.1-13.
https://search.emarefa.net/detail/BIM-1125549
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1125549
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
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