Research article of American Journal of Scientific Research and Essays
Experimental Study on the Performance of on-site Mixed Emulsion Explosives and Rock Impedance Matching
Huang Shengsong1, Zhao Mingsheng1,2*, Zhang Yiping1, Zhao Kejie1
1Mining School, Guizhou University, Guiyang 550025, China.
2Guizhou Xinlian Blasting Engineering Limited Corp, Guiyang 550002, China
The proportion of on-site mixed emulsion explosives in mining is getting higher and higher, in order to better use the explosive performance of mixed explosives to improve energy utilization. Based on the wave impedance theory, the wave impedance of mixed explosives is changed to make rocks The wave impedances are matched to achieve the purpose of improving the blasting effect and reducing the bulk rate. After field test, increasing the sensitizer content within a certain range is beneficial to the improvement of explosive performance. When the explosive sensitizer content is 1.15%, the best matching coefficient of mixed explosive and rock impedance is 2.51, the rock after blasting is large. The block rate is reduced and the rock crushing effect is better. After this matching test, it is shown that it is feasible to improve the blasting performance by adjusting the explosive performance of the explosive by the optimal wave impedance coefficient according to the hardness of the rock, which can provide reference for the peers.
Keywords: Impedance matching coefficient; Explosive performance; Blasting effect
How to cite this article:
Huang Shengsong, Zhao Mingcheng, Zhang Yiping, Zhao Kejie. Experimental Study on the Performance of on-site Mixed Emulsion Explosives and Rock Impedance Matching. American Journal of Scientific Research and Essays, 2020; 5:26. DOI:10.28933/ajsre-2020-01-2205
1. WANG Yongqing, WANG Xugyang. Relations between energy density and blasting effect of emulsion explosives [J]. Nonferrous metals, 2003(01):102-104.
2. Li Xibing,Gu Desheng, LaiHaihui, ZhuCheng-zhong. Study on the Energy Matching of Rock and Explosive Wave Impedance[J]. Journal of Zhong nan Institute of Mining and Metallurgy, 1992(01):18-23.
3. Lai Yingde. On the Energy Matching of Explosives and Rocks[J]. Engineering Blasting, 1995 (02):22-26.
4. Zhang Qi,Wang Tingwu. Energy Analysis of the Matching Relationship between Rock and Explosives[J]. Mining and Metallurgical Engineering, 1989(04):15-19.
5. Kemeny J, Cook N G W. Effective moduli, non-linear deformation and strength of a cracked elastic solid[C]. International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts. Pergamon, 1986, 23(2): 107-118.
6. HOLMBERG R，PERSON P A．The Swedish approach to contour blasting[C]//Proceedings of the 4th Conference on Explosive and Blasting Technique, 1978:113—127．
7. Wang min, Chen xin, miao yusong. Experimental study on matching of mixed explosive parameters with rock blasting impedance [J]. Technology innovation and application, 2016(0
8. Peng Jingbo. Research on quality improvement
of deep hole blasting in open pit under extremely hard rock conditions[D]. Wuhan University of Technology, 2015.
9. Song Jinquan, Wang Xuguang, Liu Tao, Cui Anna. Effect of sensitization method on detonation velocity of emulsion explosives[J].Non Ferrous Metals, 2000(04):4-8+26.
10. Hu Chaohai, Wu Hongbo. Influence of sensitization method on detonation velocity of emulsion explosives[J]. China Science and Technology Information,2014(06):74-76.
11. Zhang Hu, Xie Xinghua, Guo Ziru, Wan Xiang-dong. Effect of aluminum powder content on the performance of emulsified explosives [J]. Energetic Materials, 2008, 16 (06): 738-740.
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