The Research on Technology for Increasing the Permeability of Coal Seam by Impacting with High-Energy Air

Abstract:

The permeability of coal is very important parameter on gas extraction, but it is difficult to get good effect by conventional method on low air permeability coal seam. Based on above reason, we put forward the research on technology for increasing the permeability of coal seam by impacting with high energy air, as for showing the effect we make experiment in Xin’an mine. The data display it increased to 155.96% of single hole maximum discharge, the average is 112.73%. The best result in study is the position of 2.5m far from experimental borehole, and the flow increased to 179.69%. All the data display that it can reach well result of increasing the permeability of coal seam by impacting with high energy air.

• Periodical: Advanced Materials Research (Volumes 616-618)
• Pages: 360-364
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.616-618.360
• Online since: December 2012
• Authors: Kun Gao, Ji Ren Wang, Bao Shan Jia
• Keywords: Field Test, High-Energy Air, Low-Permeability Coal Seams, Technology for Strengthening Gas Extraction

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