空气间隔装药预裂爆破岩体损伤分布特征及控制技术

doi:10.13722/j.cnki.jrme.2014.1465

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Abstract Presplitting blasting with air-deck charge has been applied as a new contour blasting technique，but the rock damage characteristics of which has severely limited its application prospect. The air-deck charge presplitting blasting experiment has been conducted in Jingshansi iron mine. And the rock damage characteristics was studied by using a method of combining acoustic detection with numerical simulation. It is reported that there were significant differences between air-deck charge presplitting blasting and traditional presplitting blasting in the distribution of rock damage. The damage zone size of the rock near the charging section was much larger than that near air section，which was also larger than the rock damage zone size in traditional presplitting blasting. There was smash district in remaining rock near the charging section. While in some intact rock mass，the damage zone of the rock near air section was not obvious. Taking advantage of indirect initiation and casing charge structure could be benefit to decreasing the rock damage effects of presplitting blasting with air-deck charge.

Key words： rock mechanics air-deck charge presplitting blasting rock mass damage acoustic detection

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	Articles by authors
	ZHU Qiang1
	2
	CHEN Ming1
	2
	ZHENG Bingxu3
	YAN Peng1
	2

Cite this article:

ZHU Qiang1,2,CHEN Ming1, et al. Distribution and control technology of rock damage induced by air-deck charge presplitting blasting[J]. , 2016, 35(S1): 2758-2765.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2014.1465 OR https://rockmech.whrsm.ac.cn/EN/Y2016/V35/IS1/2758

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