煤层厚石英砂岩背斜顶板深孔爆破强制放顶技术研究

The Research on Forced Roof Caving Technology with Deep Hole Blasting Applied to Thick Quartz Sandstone Anticline Roof in Coal Seam

深孔爆破强制放顶是解决煤层厚硬顶板问题的最有效的方法。针对121109工作面的煤层赋存条件,介绍了深孔爆破强制放顶机理、爆破参数设计、爆破工艺以及防止背斜顶部瓦斯集聚的辅助措施。对类似工程有参考价值。

Deep hole blasting of forced caving is the most effective to solve the problem of hard thick coal seam roof. For the 121109 working face in coal seam occurrence condition, this paper introduces the mechanism of forced roof caving with deep hole blasting, the design of blasting parameters, blasting process and the auxiliary measures to prevent gas gathering at the top of the roof. It has reference value to similar projects.