Research on Reasonable Position of Roadway for close Multi-Seam and its Application

Abstract:

The principle of roadway layout is in the low stress zone. Roadway will be difficult to support due to the lower seam face in the close multi-seam is affected by dynamic pressure of the upper seam face mining. The distribution of abutment pressure after the upper seam face mining were analyzed,concluded that: The layout of lower seam roadway should avoid the stress concentration area of residual coal pillar; Stress concentration of the coal pillar is related with mining order, and stress concentration degree is higher in the first mining side of the coal pillar; when the upper coal seam is gob, the layout of the roadway in the lower coal seam with the pattern of homodromous alternate interior layout will be easy to support.

• Periodical: Advanced Materials Research (Volumes 807-809)
• Pages: 2393-2397
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.807-809.2393
• Online since: September 2013
• Authors: Ai Qing Liu*
• Keywords: Close Multi-Seam, Homodromous Alternate Interior Layout, Stress Concentration, Stress-Relaxed Area

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