Application of Hydraulic Cutting and Permeability Enhancement Technology in Coal Seams of Bottom Drainage Roadway Working Face
In response to the low permeability of the No.3 coal seam in Daping Coal Industry,hydraulic cutting technology was used for testing.By continuously observing the changes in parameters such as gas extraction concentration,extraction flow rate,and extraction purity,and the implementation effects of interval cutting and full cutting methods are compared and studied.The results show that the interval cutting effect is better than the overall cutting effect,which can provide a data basis for the development of reasonable hydraulic cutting parameters in mines.
gas extractionhydraulic slottinggap cuttingall cut seams
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