Application of High-Strength Lightweight Concrete in Gob-Side Entry Retaining in Inclined Coal Seam
المؤلفون المشاركون
Zhu, Daoyong
Gong, Weili
Su, Yi
Guo, Aipeng
المصدر
Advances in Materials Science and Engineering
العدد
المجلد 2020، العدد 2020 (31 ديسمبر/كانون الأول 2020)، ص ص. 1-20، 20ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2020-01-22
دولة النشر
مصر
عدد الصفحات
20
الملخص EN
Gob-side entry retaining (GSER) is a popular no-pillar mining technology that can increase coal recovery rate.
We propose the application of high-strength lightweight (HSLW) concrete to construct the gob-side support body (GSSB) in NO.
411 inclined working face of Jingang Coal Mine.
Firstly, the mechanical model of retained roadway was established, and the calculation for limit angle of GSSB stability and support resistance was mathematically derived.
Using the performance test, the optimal proportion of LC50 concrete was determined as follows: the water-binder ratio was 0.3; the silica fume dosage was not more than 10%; the fly ash dosage was 10–20%; and the sand ratio was 0.45–0.50.
Based on theoretical deduction and laboratory analysis, the width of GSSB was obtained to be 0.75 m, and the optimal arrangement of concrete blocks with “two longitudinal and one horizontal, crisscross, and staggered joints” was determined.
FLAC3D software was used to study the influence of different widths and material strengths on the surrounding rock deformation and verify the reasonable width and strength of the designed GSSB.
Finally, field monitoring of retained roadway shows that the deformation is controlled in a small range, and the retained roadway effect is better, thus proving the feasibility of HSLW for constructing the support body for GSER.
Our findings can serve as a theoretical guide for safety and effective implementation of HSLW as GSSB.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Zhu, Daoyong& Gong, Weili& Su, Yi& Guo, Aipeng. 2020. Application of High-Strength Lightweight Concrete in Gob-Side Entry Retaining in Inclined Coal Seam. Advances in Materials Science and Engineering،Vol. 2020, no. 2020, pp.1-20.
https://search.emarefa.net/detail/BIM-1129241
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Zhu, Daoyong…[et al.]. Application of High-Strength Lightweight Concrete in Gob-Side Entry Retaining in Inclined Coal Seam. Advances in Materials Science and Engineering No. 2020 (2020), pp.1-20.
https://search.emarefa.net/detail/BIM-1129241
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Zhu, Daoyong& Gong, Weili& Su, Yi& Guo, Aipeng. Application of High-Strength Lightweight Concrete in Gob-Side Entry Retaining in Inclined Coal Seam. Advances in Materials Science and Engineering. 2020. Vol. 2020, no. 2020, pp.1-20.
https://search.emarefa.net/detail/BIM-1129241
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1129241
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