摘要
为消除煤巷掘进中的突出危险,采取穿层钻孔对煤层瓦斯进行抽放,在3个月的抽放时间内,共抽放瓦斯30.3×104 m3,瓦斯抽放率达53%。
To prevent the outburst during tunneling, the author presents the gas suction technology by crossing drilling with reasonable construction machines and tools and hole sealing technique of ＂two plugging and one in-jection＂, which has achieved the gas suction of 30.3 × 104 m3 with gas suction ratio of 53 %.
出处
《江西煤炭科技》
2015年第2期18-20,共3页
Jiangxi Coal Science & Technology
关键词
煤与瓦斯突出
穿层钻孔
抽放
封孔
coal and gas outburst
crossing drillingl suction
hole sealing
