Determination of the Appropriate Geometry of Footwall Drifts Using Numerical Analysis Technique

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• 作者：Eugie Kabwe ; Victor Mwango Bowa
• 关键词：Abutments ; Flac 3D ; Footwall ; MCR ; Sublevel open stoping ; Stress
• 刊名：Geotechnical and Geological Engineering
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：34
• 期：6
• 页码：1955-1969
• 全文大小：14,716 KB
• 刊物类别：Earth and Environmental Science
• 刊物主题：Earth sciences
  Geotechnical Engineering
  Hydrogeology
  Terrestrial Pollution
  Waste Management and Waste Technology
  Civil Engineering
  
• 出版者：Springer Netherlands
• ISSN：1573-1529
• 卷排序：34

文摘

Mufulira underground mine has been facing great geotechnical challenges due to crown pillars left after mining which act similar to stress windows and these bring about high stress build up in the footwall drifts. A numerical analysis was performed with the objective to investigate how a change in mining method would affect the high stress levels. The numerical analysis was achieved using the software Flac 3D based on data corrected at the mine. One of the major aims of the analysis was to determine the change in mining height and its implications. Results from the numerical analysis showed that altering the mining technique would decrease the stress levels in the footwall.