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Experimental and Numerical Investigation of Blast-Induced Vibration for Short-Delay Cut Blasting in Underground Mining
المؤلفون المشاركون
Zhou, Jian
Shi, Xiuzhi
Qiu, Xianyang
Huang, Dan
Gou, Yonggang
المصدر
العدد
المجلد 2019، العدد 2019 (31 ديسمبر/كانون الأول 2019)، ص ص. 1-13، 13ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2019-08-01
دولة النشر
مصر
عدد الصفحات
13
التخصصات الرئيسية
الملخص EN
It is essential to control the damage to the surrounding rock and engineering structures in the process of cut blasting with a single free surface in underground mining.
To reduce vibration induced by cut blasting, this paper proposes short-delay cut blasting, in which blast holes that are near each other are sequentially initiated with short-delay times.
Experimental tests of cut blasting were conducted in a roadway in the Shaxi copper mine to compare the peak particle velocity (PPV) and frequency characteristics of simultaneous blasting and short-delay blasting.
Numerical modelling was then developed to study the influence of short-delay times on blast vibration.
The accuracy of the numerical simulation was verified by the comparison of the test and simulated data of single-hole blasting.
The results show that the amplitude reduction ratio (ARR) value increases gradually with the increase in delay intervals, and the vibration reduction for delay intervals smaller than 6 ms is very limited, particularly in the near field.
The principal frequencies (PFs) for short-delay blasting are similar to those for simultaneous blasting, which implies that the frequencies do not increase directly with the decrease of the delay intervals.
The experimental tests also show that the mean frequencies (MFs) for the 8 ms delay are slightly higher than those for the 0 ms delay blast.
In the case of ensuring the rock breaking of cut blasting, longer delay intervals of 8∼10 ms are beneficial to further reduce PPV in practical blasting.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Huang, Dan& Qiu, Xianyang& Shi, Xiuzhi& Gou, Yonggang& Zhou, Jian. 2019. Experimental and Numerical Investigation of Blast-Induced Vibration for Short-Delay Cut Blasting in Underground Mining. Shock and Vibration،Vol. 2019, no. 2019, pp.1-13.
https://search.emarefa.net/detail/BIM-1211358
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Huang, Dan…[et al.]. Experimental and Numerical Investigation of Blast-Induced Vibration for Short-Delay Cut Blasting in Underground Mining. Shock and Vibration No. 2019 (2019), pp.1-13.
https://search.emarefa.net/detail/BIM-1211358
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Huang, Dan& Qiu, Xianyang& Shi, Xiuzhi& Gou, Yonggang& Zhou, Jian. Experimental and Numerical Investigation of Blast-Induced Vibration for Short-Delay Cut Blasting in Underground Mining. Shock and Vibration. 2019. Vol. 2019, no. 2019, pp.1-13.
https://search.emarefa.net/detail/BIM-1211358
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1211358
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
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