If you have access to OneMine as part of a member benefit, log in through your member association website for a seamless user experience.
An analysis of roof-pillar-weak floor interaction in partial extraction room-and-pillar mining
×
Citation (Style = APA)
Pytel, W. M. (1989). An analysis of roof-pillar-weak floor interaction in partial extraction room-and-pillar mining. Rock Mechanics as a Guide for Efficient Utilization of Natural Resources
Citation Downloads
Reference Manager (RIS)
SpreadSheed (CSV)
Pytel, W. M. (1989). An analysis of roof-pillar-weak floor interaction in partial extraction room-and-pillar mining. Rock Mechanics as a Guide for Efficient Utilization of Natural Resources
Citation Downloads
Reference Manager (RIS)
SpreadSheed (CSV)
Organization: International Conference on Ground Control in Mining
Pages: 8
Publication Date:
Jan 1, 1989
Email to a Friend
Abstract
Abstract
| The applicability of the beam theory in analysis of roof- pillar-weak floor interaction in partial extraction room-and-pillar mining is presented. The mine structure is modeled as an equivalent multi-indeterminate overburden elastic beam supported by elasto-plastic pillars; resting on a viscoelastic layer of immediate weak floor strata underlain by a competent rock mass. The developed analytical model was initially utilized to conduct sensitivity analyses of different variables affecting the mining system, such as the deformability of coal and weak floor strata, thickness of weak floor strata, number of pillars in a panel, width of pillars, width of panel etc. These analyses were then extended to three overburden strata - coal pillar - floor strata lithologies typical of active coal mining areas in Illinois. |
Full Article Download:
