Experimental Study on Deeply Promoting Drainage by Gas Injection and Replacement in Boreholes at 1307 Floor Drainage Roadway of Zhaozhuang Mine
LIU Xiaohui
GAO Hong
Abstract：Aiming at the problems of soft and low permeability coal seam and difficulty of gas drainage at 1307 working face of Zhaozhuang Coal Mine, we try to use the method of gas injection and replacement to promote the drainage in the hole drilling of floor drainage roadway,and arrange the gas injection holes and drainage holes reasonably and test the effect of gas injection;the results show that the experimental stndv of gas injection and promoting drainage is feasible,which improves the effect of coal seam gas drainage and so as to ensure the safe and efficient mining of 1307 working face.
Keywords：soft and low permeability coal seamgas injection in coal seamreplacement and promoting drainagehole arrangementgas drainage
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 16-19 )