摘要
为了解决裕民煤矿芋子田井高瓦斯厚煤层煤巷掘进瓦斯超限严重、掘进进尺十分缓慢的问题,将水力疏松综合消突措施应用于厚煤层掘进中,并考察了其消突效果,结果表明:采用水力疏松综合消突措施后,瓦斯效检指标超标率由以前的70%以上降低到10%左右,巷帮钻孔瓦斯抽采体积分数平均提高了199%,月掘进进尺提高到原来的2.2倍,实现了煤巷快速安全掘进。
In order to solve the gas content over limit occurred in the thick seam gateway driving and the driving rate slow problems in Yuzitian Coal Mine Shaft of Yumin Coal Mine,the comprehensive outburst control measures with the hydraulic loosing was applied to the thick seam gateway driving and the outburst control results were investigated.The results showed that after the comprehensive outburst measures with the hydraulic loosing applied,the over limit rate of the gas effect inspection index was reduced from previous over 70% to about 10%,the gas drainage density from the boreholes in the gateway side wall was improved by 199% in average and the month driving rate of the seam gateway was 2.2 times higher than previous.Thus the seam gateway could be safety in driving.
出处
《煤炭科学技术》
CAS
北大核心
2010年第10期52-54,58,共4页
Coal Science and Technology
关键词
水力疏松
厚煤层
掘进
瓦斯超限
hydraulic loosing
thick seam
gateway driving
gas content over limit
