Long period gob-side entry retaining to strengthen pressure relief gas extraction method
QIAN Wanxue
YU Fuyan
XIAO Yuhao
SONG Bo
Abstract：Aiming at the problem of insufficient utilization rate of extraction pipe existing in gob-side entry retaining technology,taking 21315 fully-mechanized mining face of Xiangshan Mine as the re-search object,the gas extraction pipe of 21315 fully-mechanized mining face was laid by pre-construc-tion of sunken drilling field,gob-side entry retaining technology and through layer drilling technology,and protective measures were applied to the extraction pipe.Gas extraction was carried out by embedding extraction pipe in goaf.The results show that through the pre-design and construc-tion of the sunken drilling field and the protection of the extraction pipeline,the gas extraction effi-ciency can be improved,the service life of the pipeline can be extended,the extraction time can be ex-tended,the gas accumulation problem can be effectively solved,and the safe mining can be guaran-teed.
Keywords：gob-side entry retaininggas accumulationthrough layer drillingpre-harvest pumpinglong period gas extraction
Publication Date：2025-02-24
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)