Practical Application of Gas Control in Small Pillar Working Face of Yonghong Coal Mine
In Yonghong Coal Mine,the gas control measures of"coal preservation with rock + hydraulic cavitation"were used to adopt in driving,of which there were some problems,such as long drilling construction time,high operation cost and long time for reaching the drainage standard.Taking 3512 working face of Yonghong Coal Mine as the research object,the phased gas control measures of"small coal pillar driving + cross-layer pre-pumping drilling"were innovatively designed.The application results showed that the average monthly penetration of roadway in single drive was 161 m,which was of effective anti-outburst effect,obvious pumping effect,effective gas control effect during driving and significant economic benefits.
small pillar drivingcoal preservation with rockhydraulic cavitationcross-layer drillingdriving speed
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维普
