Analysis of pumping effect of hydraulic permeability enhancement and extraction in bedding drilling
WANG Peng
Abstract：In view of the low extraction volume and the rapid attenuation of the drilling extraction volume in this coal seam,which seri-ously affects the standard time of the coal seam gas extraction,through the hydraulic permeability enhancement measures of the bedding drilling,the pure flow rate of single hole extraction is 2～4 times that of ordinary holes,and the attenuation period of pumping flow is longer than that of ordinary drilling,which has important guiding significance for shortening the extraction time of the working face,alle-viating the pumping-excavation-mining connection of the mine,and ensuring the safe and efficient mining of the working face.
Keywords：bedding drillingultra-high pressurehydraulic cave-makingextraction flow
Publication Date：2024-10-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 101-104,109 )