PANORAMIC INSPECT AND EVALUATON ON BLAST EFFECTING OF INDUCTION CAVING IN HARD ROCK ROOF

CORC > 武汉岩土力学研究所 > 中科院武汉岩土力学所 > 岩土力学所知识全产出 > 会议论文

	PANORAMIC INSPECT AND EVALUATON ON BLAST EFFECTING OF INDUCTION CAVING IN HARD ROCK ROOF
	Hu, Jian-Hua; Zhou, Ke-Peng; Luo, Xian-Wei
	2009
会议日期	AUG 21-23, 2009
会议地点	Dalian, PEOPLES R CHINA
页码	929-936
英文摘要	Technology of induction caving roof is based on the successive mining, and it is said that the zone of fracturing is controlled through the pre-splitting blast and induce fracture was developed by the forced blast. With the development and expansion of the cracks, the rock mass would have been instability and caving in the roof. But, due to the process of the induction caving roof by the blast in the underground mine, the effects were invisible to the pre-splitting blast and the force blast. It is difficult to evaluate the effect of blast. Using the borehole camera system, the technique of front view and digital panoramic were used to inspect the effect of blast. The shape of the hole was detected before blast, and the blast effect was inspected after the blast. Especially, after blasting, the cracks character is described by the digital panoramic borehole camera. The photographs were analyzed by the viewing them digitally. The results of the digital panoramic borehole camera show: (1) To pre-splitting blast, the pre-splitting cracks were formed after the blast. Its width is up to 20 similar to 40 mm, and the half wall of hole could be seen in the bottom of the hole. (2) Large amounts of secondary cracks were formed in the rock mass of the roof. The crack form is an "X", and the original cracks were expanded. The mass shapes of blast was right, the rock stacked by the natural angle of slope. It is an advantage to induction caving roof to the large cracks and ruptured structural rock mass.
会议录	CONTROLLING SEISMIC HAZARD AND SUSTAINABLE DEVELOPMENT OF DEEP MINES: 7TH INTERNATIONAL SYMPOSIUM ON ROCKBURST AND SEISMICITY IN MINES (RASIM7), VOL 1 AND 2
会议录出版者	RINTON PRESS, INC
会议录出版地	PRINCETON
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Engineering ; Mining & Mineral Processing
WOS记录号	WOS:000271028900137
内容类型	会议论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/4516]
专题	岩土力学所知识全产出_会议论文国家重点实验室知识产出_会议论文
作者单位	Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn
推荐引用方式 GB/T 7714	Hu, Jian-Hua,Zhou, Ke-Peng,Luo, Xian-Wei. PANORAMIC INSPECT AND EVALUATON ON BLAST EFFECTING OF INDUCTION CAVING IN HARD ROCK ROOF[C]. 见:. Dalian, PEOPLES R CHINA. AUG 21-23, 2009.