![](/images/graphics-bg.png)
Pressure-Arching Characteristics in Roof Blocks during Shallow Coal Mining
المؤلفون المشاركون
Zou, Zhengsheng
Wang, Shuren
Hagan, Paul
Zhao, Yanhai
Ren, Lianwei
المصدر
العدد
المجلد 2018، العدد 2018 (31 ديسمبر/كانون الأول 2018)، ص ص. 1-12، 12ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2018-09-16
دولة النشر
مصر
عدد الصفحات
12
التخصصات الرئيسية
الملخص EN
To reveal the performance of the stepped subsidence and the strong roof weighting during shallow coal mining, taking the fully mechanized mining face with large mining height in the Shendong mining area in China as the engineering background, theoretical analysis and numerical simulation were used to analyze the pressure-arching effect of the hanging roof blocks.
Three typical pressure-arch models of the roof structure were proposed, such as the symmetrical pressure-arch of two key blocks, the step pressure-arch of multiple key blocks, and the rotative pressure-arch of multiple key blocks.
Results indicate that the horizontal stress displays a nonlinear distribution at the abutments of the symmetrical pressure-arch, and there is a linear distribution of horizontal stress with a higher peak value at the midspan of the pressure-arch.
The high horizontal stress at the arch abutment is necessary to form the rotative pressure-arch of multiple key blocks.
The horizontal stress is relatively less at the arch abutment of the step pressure-arch structure.
The main key block is easier to slide in this structure as the boundary horizontal stresses display the nonlinear distribution.
The results are of instructive significance for roof weighting forecast and strata control during shallow horizontal mining for a thick coal seam.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Zhao, Yanhai& Wang, Shuren& Hagan, Paul& Ren, Lianwei& Zou, Zhengsheng. 2018. Pressure-Arching Characteristics in Roof Blocks during Shallow Coal Mining. Advances in Civil Engineering،Vol. 2018, no. 2018, pp.1-12.
https://search.emarefa.net/detail/BIM-1116439
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Zhao, Yanhai…[et al.]. Pressure-Arching Characteristics in Roof Blocks during Shallow Coal Mining. Advances in Civil Engineering No. 2018 (2018), pp.1-12.
https://search.emarefa.net/detail/BIM-1116439
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Zhao, Yanhai& Wang, Shuren& Hagan, Paul& Ren, Lianwei& Zou, Zhengsheng. Pressure-Arching Characteristics in Roof Blocks during Shallow Coal Mining. Advances in Civil Engineering. 2018. Vol. 2018, no. 2018, pp.1-12.
https://search.emarefa.net/detail/BIM-1116439
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1116439
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
![](/images/ebook-kashef.png)
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
![](/images/kashef-image.png)