Numerical study and application on technology of slotting and blasting down the roof for handling mined-out areas

摘要：

Based on comprehensive assessment and stress measurement of mined-out areas of Jinfeng gold mine, the stress distribution and surrounding rock stability are analyzed by theoretical and numerical simulation methods. According to the results, feasibility of the program and the blasting down location of handing mined-out areas are defined. The case study shows that the falling block can effectively become top pick after blasting down the roof, the stress of rock mass at the under-part of mined-out areas is obviously reduced. It can ensure mining safely in the lower middle position. So, it shows that technology of slotting and blasting down the roof is an advanced and cost-effective method for handling the mined-out areas and should be widely applied.

作者: L. Fu Q.Li L. Qiao Y. Li

作者单位: University of Science and Technology Beijing,The Key Laboratory of High-Efficient Mining and Safety Geotechnical engineering company, China petroleum engineering Co, Ltd, Beijing .China University of Science and Technology Beijing, The Key Laboratory of High-Efficient Mining and Safety

会议类型: 国际会议

会议名称: The 2nd ISRM International Young ScholarsSymposium on Rock Mechanics(第二届国际岩石力学青年学者研讨会)

会议地点: 北京

会议语种:英文

页码: 277-280

在线出版日期: 2011-10-14（万方平台首次上网日期，不代表论文的发表时间）