Research on the Development Mechanism of Postpeak Cracks in Sandstone under Different Confining Pressures
المؤلفون المشاركون
Wang, Lianguo
Chen, Jiarui
Dong, Yun
Zhang, Jihua
Sun, Huasheng
Chen, Yadong
Jiang, Yang
Fan, Yuqing
المصدر
Mathematical Problems in Engineering
العدد
المجلد 2019، العدد 2019 (31 ديسمبر/كانون الأول 2019)، ص ص. 1-10، 10ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2019-05-02
دولة النشر
مصر
عدد الصفحات
10
التخصصات الرئيسية
الملخص EN
Water inrush happens occasionally during deeper roadways excavation.
It is mainly due to the lack of understanding in the formation and development mechanism of cracks and its spatial distribution pattern under ground stress.
In view of this, this paper used different stress levels to represent the fracture state of different parts of the surrounding rock of the deep roadway; CT detection technique is used to scan the fractured sandstone in the postpeak state; and the CT images under different confining pressures are thus obtained.
The geometrical parameters such as area, length, and width of the crack are used to describe the distribution patterns based on CT images processing technique and statistical principle.
These patterns are then analyzed under varying postpeak stress levels and confining pressures.
The result shows that, as the area, length, and width of the cracks get larger, number of cracks increases with decreasing stress level; at different stress levels, sandstone crack area probability density, crack length probability density, and crack width probability density form exceptional, linear, and Gaussian distribution, respectively.
The amount of confining pressure affects the size of cracks and the extent of expansion.
This means that the higher the confining pressure is, the easier the internal crack will be penetrated and expanded and the bigger the cracks are, and the number of cracks gets lesser.
Such research results can be used to describe the propagation and evolution law of cracks under different stress states of postpeak rock, which also provide an important basis for further analysis of its permeability and the stability of roadway surrounding rock.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Zhang, Jihua& Chen, Yadong& Jiang, Yang& Sun, Huasheng& Chen, Jiarui& Fan, Yuqing…[et al.]. 2019. Research on the Development Mechanism of Postpeak Cracks in Sandstone under Different Confining Pressures. Mathematical Problems in Engineering،Vol. 2019, no. 2019, pp.1-10.
https://search.emarefa.net/detail/BIM-1196402
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Chen, Yadong…[et al.]. Research on the Development Mechanism of Postpeak Cracks in Sandstone under Different Confining Pressures. Mathematical Problems in Engineering No. 2019 (2019), pp.1-10.
https://search.emarefa.net/detail/BIM-1196402
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Zhang, Jihua& Chen, Yadong& Jiang, Yang& Sun, Huasheng& Chen, Jiarui& Fan, Yuqing…[et al.]. Research on the Development Mechanism of Postpeak Cracks in Sandstone under Different Confining Pressures. Mathematical Problems in Engineering. 2019. Vol. 2019, no. 2019, pp.1-10.
https://search.emarefa.net/detail/BIM-1196402
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1196402
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