预裂爆破钻孔在坚硬中厚砂岩顶板突出煤层条件下的应用研究

Study on the Application of Presplitting Blast Drilling under the Condition of Hard Medium Thick Sandstone Roof Outburst Coal Seam

本文介绍了在坚硬中厚砂岩顶板的突出煤层条件下,预裂爆破钻孔技术措施的钻孔布置、爆破及工艺设备等具体参数,简述了预裂爆破技术对瓦斯治理作用及治理效果的考察。实践证明,采用预裂爆破措施可以得到较佳的瓦斯治理效果。

This paper introduces the specific parameters of drilling arrangement,blasting and technological equipment of presplitting blasting drilling technical measures under the condition of outburst coal seam with hard medium thick sandstone roof,and briefly describes the investigation of presplitting blasting technology on gas control and its effect.The practice shows that the better gas control effect can be obtained by adopting presplitting blasting measures.