Research and application on efficient rock blasting based on circular free surface

被引：0
|
作者：
Hong Y. [1 ]
Ma H. [1 ,2 ]
Shen Z. [1 ]
Ren L. [1 ]
Cui Y. [1 ]
Zhao K. [1 ]
机构：
[1] CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei, 230026, Anhui
[2] State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, 230026, Anhui
来源：
Baozha Yu Chongji/Explosion and Shock Waves | 2018年 / 38卷 / 01期
关键词：
Circular surface; Coring; Rock blasting; Rock drift excavation;
D O I：
10.11883/bzycj-2016-0176
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The present work aims to improve the speed and efficiency of rock excavation by forming a circular excavating surface with the coring technique so that the smallest possible charge of explosives would be needed. At first a numerical simulation was conducted to figure out the explosive parameters, then an experiment was carried out to verify the simulation. Two concrete models were fabricated to respectively model the coring blasting and the traditional blasting, with a vibration meter installed to measure the vibration. Comparison of the vibration data and the blasting effects between the two models show that the effect and the blasting vibration of the coring blasting are significantly superior to those of the traditional blasting. And the coring technique was successfully applied to an actual excavation project. The results show that the coring technique can be applied to blasting in circular excavating surface, thus reducing the number of shot holes, controlling the blasting vibration and improving blasting efficiency. This technique can be applied in urban engineering projects. © 2017, Editorial Board of EXPLOSION AND SHOCK WAVES. All right reserved.
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页码：98 / 105
页数：7
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