Analysis on Some Influencing Factors of Local Rock Fragmentation by Blasting in Drilling Hole

详细信息   

• 责任者：Ji Rongsheng （China University of Geosciences ; Beijing 100083 ; China） ; Ran Hengqian
• 刊名：Exploration Engineering
• 出版年：2008
• 卷期：35(9)
• 关键词：钻孔 ; boreholes ; drill holes ; 爆破 ; blasting
• 页码：p.66-69，75
• 图表：1 illus., 7 refs.
• 分类号：2000
• issnNo：ISSN1672-7428
• isbnNo：CN11-5063/TD

摘要

To accurately blast the local rock in a borehole is a technical knot in rock blasting. The solution of this problem may be helpful to obtain masses of minerals by way of boreholes and promote the efficiency of solution mining and in-situ uranium mining, and make it possible to obtain some difficult-to-mine minerals with significant potential value. A couple of blasting technical issues on rock fragmentation in borehole were discussed and the influencing factors were analyzed in this paper, it was indicated that well fragmentation of rock mass in-situ borehole could be achieved by way of adopting a reasonable loading means with full consideration of deposit conditions of rock.