Numerical simulation on pin-point blasting of sloping surface

Huang Yong-hui; Liu Dian-shu; Li Sheng-lin; Li Xiang-long; Wang Jia-lei

doi:10.11883/1001-1455(2014)04-0495-06

Volume 34 Issue 4

Sep. 2014

Turn off MathJax

Article Contents

Article Navigation > Explosion And Shock Waves > 2014 > 34(4): 495-500

Huang Yong-hui, Liu Dian-shu, Li Sheng-lin, Li Xiang-long, Wang Jia-lei. Numerical simulation on pin-point blasting of sloping surface[J]. Explosion And Shock Waves, 2014, 34(4): 495-500. doi: 10.11883/1001-1455(2014)04-0495-06

Citation:

Huang Yong-hui, Liu Dian-shu, Li Sheng-lin, Li Xiang-long, Wang Jia-lei. Numerical simulation on pin-point blasting of sloping surface[J]. Explosion And Shock Waves, 2014, 34(4): 495-500. doi: 10.11883/1001-1455(2014)04-0495-06

Citation:

PDF( 3438 KB)

Numerical simulation on pin-point blasting of sloping surface

doi: 10.11883/1001-1455(2014)04-0495-06

1.
Faculty of Electic Power Engineering, Kunming University of Science and Technology, Kunming 650500, Yunnan, China
2.
School of Mechannics and Civil Engineering, China University ofMining and TechnologyBeijing), Beijing 100083, China
3.
Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, China

Funds: Supported bythe National Natural Science Foundation of China (51304087)

More Information

Corresponding author: Huang Yong-hui, 8176309@qq.com
Received Date: 2012-11-22
Rev Recd Date: 2014-06-05
Publish Date: 2014-07-25

Abstract

Abstract

In order to obtain the casting speed of rock in pin-point blasting of sloping surface, a research was carried out by the field test, theoretical analysis, the high-speed photography and numerical simulation. The results of research show that maximum casting speed of rock was in the range of 18-28 m/s which was reached in 93-105 ms after detonation; along the direction of detonation propagating, maximum casting speed of rock increased to a platform firstly, then declined with the same motion resistance; in the end of pin-point blasting, the rock fall as free-faller, and the casting speed of rock vibrated due to the collision of rock; the process of pin-point blasting of sloping surface was simulated with the RHT constitutive model and parameters assorted. The result of numerical simulation was proved by the measurement of high-speed photography
- mechanics of explosion,
- velocity field,
- RHT material constitutive model,
- pin-point blasting of sloping surface,
- high-speed photography

FullText(HTML)

References(9)

References

[1]	李祥龙, 何丽华, 栾龙发, 等.露天煤矿高台阶抛掷爆破爆堆形态模拟[J].煤炭学报, 2011, 36(9): 1457-1462. http://www.cqvip.com/QK/96550X/201109/39487592.html Li Xiang-long, He Li-hua, Ruan Long-fa, et al. Simulation model for muckpile shape of high bench cast blasting in surface coal mine[J]. Journal of China Coal Society, 2011, 36(9): 1457-1462. http://www.cqvip.com/QK/96550X/201109/39487592.html
[2]	尤浩生.台阶爆破的计算机模拟[D].北京: 北京科技大学, 1997.
[3]	AUTODYN Theory Manual[Z]. Horsham, UK: Century Dynamics Ltd, 2003.
[4]	杨秀敏.爆炸冲击现象数值模拟[M].合肥: 中国科技大学出版社, 2010.
[5]	Hansson H, Skoglund P. Simulation of concrete penetration in 2D and 3D with the RHT material model[R]. Tumba, Sweden: Swedish Defence Research Agency, 2002.
[6]	Lu Yong, Wang Zhong-qi, Chong K. A comparative study of buried structure in soil subjected to blast loads using 2D and 3D numerical simulations[J]. Soil Dynamics and Earthquake Engineering, 2005, 25(4): 275-288. doi: 10.1016/j.soildyn.2005.02.007
[7]	Brara A, Klepaczko J R. Fracture energy of concrete at high loading rates in tension[J]. International Journal of Impact Engineering, 2007, 34(3): 424-435. doi: 10.1016/j.ijimpeng.2005.10.004
[8]	佟强.中深孔掏槽爆破与矸石块度控制模拟试验研究[D].北京: 中国矿业大学(北京), 2010.
[9]	于起峰.摄像测量学原理与应用研究[M].北京: 科学出版社, 2009.