Study on Impact Tendency of Coal and Rock Mass Based on Different Stress Paths
المؤلفون المشاركون
Zhang, Chengliang
Wu, Shunchuan
Ye, Danyong
Wang, Chao
Yang, Ping
المصدر
العدد
المجلد 2020، العدد 2020 (31 ديسمبر/كانون الأول 2020)، ص ص. 1-11، 11ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2020-11-29
دولة النشر
مصر
عدد الصفحات
11
التخصصات الرئيسية
الملخص EN
With the increased mining depth, the dynamic disaster of rock burst in coal mines has become increasingly prominent, and the impact tendency of coal and rock mass in deep coal seam mining is a necessary condition for the occurrence of rock burst and an important index to measure the failure of coal and rock mass.
Laboratory tests and numerical tests were used to study the impact tendency of coal and roof strata, including the deformation characteristics, failure characteristics, and bending energy index of the coal and rock mass of different sizes, the failure law and energy evolution characteristics of tlhe coal and rock mass under the same size, and the unloading characteristics of the coal and rock mass under the same size and different confining pressures.
The results are shown as follows: (1) The rock roof was determined to have a weak impact tendency through the mechanical test.
(2) With the increased size, the microcracks in the rock samples increased correspondingly, and the increased meso-defect leading to the increased heterogeneity was an essential reason for the size effect.
The strength of the rock mass decreased with the increased specimen size.
The larger the specimen size was, the lower the bending energy index was.
(3) Triaxial loading and unloading were tested for the same size under different surrounding rocks.
Under the same loading conditions, with the increased confining pressure, the strength and bending energy index of rock mass increased correspondingly, and the failure of rock mass transformed from tensile to shear failure.
The failure form and strength characteristic of rock under the unloading condition are different from those under the loading condition.
The failure degree was intense, with a high bending energy index.
Compared with the loading situation, the impact tendency caused by unloading was higher, and the dynamic impact disaster was more likely to occur.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Zhang, Chengliang& Ye, Danyong& Yang, Ping& Wu, Shunchuan& Wang, Chao. 2020. Study on Impact Tendency of Coal and Rock Mass Based on Different Stress Paths. Advances in Civil Engineering،Vol. 2020, no. 2020, pp.1-11.
https://search.emarefa.net/detail/BIM-1125206
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Zhang, Chengliang…[et al.]. Study on Impact Tendency of Coal and Rock Mass Based on Different Stress Paths. Advances in Civil Engineering No. 2020 (2020), pp.1-11.
https://search.emarefa.net/detail/BIM-1125206
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Zhang, Chengliang& Ye, Danyong& Yang, Ping& Wu, Shunchuan& Wang, Chao. Study on Impact Tendency of Coal and Rock Mass Based on Different Stress Paths. Advances in Civil Engineering. 2020. Vol. 2020, no. 2020, pp.1-11.
https://search.emarefa.net/detail/BIM-1125206
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1125206
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