Analysis and Application on Controlling Thick Hard Roof Caving with Deep-Hole Position Presplitting Blasting
المؤلفون المشاركون
المصدر
العدد
المجلد 2018، العدد 2018 (31 ديسمبر/كانون الأول 2018)، ص ص. 1-15، 15ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2018-10-17
دولة النشر
مصر
عدد الصفحات
15
التخصصات الرئيسية
الملخص EN
For the thick hard roof (THR) in Datong mining area, mining operations often led to large-scale hanging-roof and frequent and strong strata behavior, threatening mining safety seriously.
Based on the instability mechanism, the fracture model for THR was established, including rock blocks articulation and combined cantilever beam, and the limit initial and periodic intervals of THR were determined to be 36.0 m and 8.0 m, respectively.
The study proposed the deep-hole presplitting blasting (DPB) for weakening THR for mitigating strong strata behaviors.
Blasting-induced fracture characteristics were calculated, determining the charging coefficient and holes spacing.
LS-DYNA was employed for establishing a DPB model to analyze crack evolution under the synergistic action of blasting stress wave and detonation gas and the attenuation characteristics for rock peak particle velocity, verifying the rationality of blasting parameters.
Field measurement analysis indicated that the immediate roof induced a timely collapse to fill the goaf and the THR was effectively cut off near the presplitting line.
Meanwhile, the working resistance was utilized with safety allowance.
The field application showed the DPB on controlled THR caving achieved the significant effect.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Chen, Baobao& Liu, Changyou. 2018. Analysis and Application on Controlling Thick Hard Roof Caving with Deep-Hole Position Presplitting Blasting. Advances in Civil Engineering،Vol. 2018, no. 2018, pp.1-15.
https://search.emarefa.net/detail/BIM-1117001
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Chen, Baobao& Liu, Changyou. Analysis and Application on Controlling Thick Hard Roof Caving with Deep-Hole Position Presplitting Blasting. Advances in Civil Engineering No. 2018 (2018), pp.1-15.
https://search.emarefa.net/detail/BIM-1117001
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Chen, Baobao& Liu, Changyou. Analysis and Application on Controlling Thick Hard Roof Caving with Deep-Hole Position Presplitting Blasting. Advances in Civil Engineering. 2018. Vol. 2018, no. 2018, pp.1-15.
https://search.emarefa.net/detail/BIM-1117001
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1117001
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