Stowing and Mining Interval Width and Stowing Body Strength Index in Tool Pillar Stowing Faces

Abstract:

This paper put forward the technical ideas of tool pillar mining with stowing that is dividing mining and stowing into two stages and recycling pillars based on the first stage stowing body support roof by analyzing tool pillar faces characteristic with pillar and goaf septal arrangement. Due to the stope drift and pillar size are both small, the goaf should be timely stowing in order to ensure stability of pillars and stowing body, author introduced stowing and mining interval width and stowing body strength determined method in two stages. This paper calculated pillar load of the first stage and stowing body load of the second stage with enlarge pressure arch theory, determined stowing and mining interval width in two stages and stowing body strength in the first stage combined with safety factor. At last author determined the second stage stowing body strength according to the surface movement and deformation control requirement with numerical simulation.

• Periodical: Advanced Materials Research (Volumes 962-965)
• Pages: 1189-1194
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.962-965.1189
• Online since: June 2014
• Authors: Peng Liang Liu*
• Keywords: Enlarge Pressure Arch Theory, Stowing and Mining Interval Width, Stowing Body Safety Factor, Stowing Body Strength, Surface Movement and Deformation Control, Tool Pillar Stowing Faces

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