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Numerical Analysis of Stress Fields and Crack Growths in the Floor Strata of Coal Seam for Longwall Mining
المؤلفون المشاركون
Xie, Yunyue
Xiao, Hongtian
Sun, Lingzhi
المصدر
Mathematical Problems in Engineering
العدد
المجلد 2018، العدد 2018 (31 ديسمبر/كانون الأول 2018)، ص ص. 1-12، 12ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2018-08-15
دولة النشر
مصر
عدد الصفحات
12
التخصصات الرئيسية
الملخص EN
This paper predicts the possibility of water inrush from a confined aquifer under the action of mining activities and water pressure.
The study uses numerical analyses to evaluate stress redistribution and crack growth which result from coal extraction operations.
Two models are presented in this study.
By simplifying the distribution of the disturbed vertical stress on the coal seam and floor around a working face, a model is established to analyze the additional stresses in the floor strata induced by mining activities.
And some distribution features of all the additional stress components are described.
By using the superposition principle in fracture mechanics, another model is developed to analyze the crack growth in the floor strata under the action of disturbed stresses and water pressure.
And the stress intensity factors at the crack tip are presented and the process of crack growth is obtained in the advancement of a working face.
Because of discretizing only loading areas and crack surfaces, the present methods can obtain the accurate numerical results.
Finally, some suggestions are made for preventing the water inrush from a confined aquifer.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Sun, Lingzhi& Xie, Yunyue& Xiao, Hongtian. 2018. Numerical Analysis of Stress Fields and Crack Growths in the Floor Strata of Coal Seam for Longwall Mining. Mathematical Problems in Engineering،Vol. 2018, no. 2018, pp.1-12.
https://search.emarefa.net/detail/BIM-1207250
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Sun, Lingzhi…[et al.]. Numerical Analysis of Stress Fields and Crack Growths in the Floor Strata of Coal Seam for Longwall Mining. Mathematical Problems in Engineering No. 2018 (2018), pp.1-12.
https://search.emarefa.net/detail/BIM-1207250
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Sun, Lingzhi& Xie, Yunyue& Xiao, Hongtian. Numerical Analysis of Stress Fields and Crack Growths in the Floor Strata of Coal Seam for Longwall Mining. Mathematical Problems in Engineering. 2018. Vol. 2018, no. 2018, pp.1-12.
https://search.emarefa.net/detail/BIM-1207250
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1207250
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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