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为解决低透气性突出煤层煤巷掘进过程中煤与瓦斯突出指标值经常超限、掘进速度慢等问题,提出了深孔预裂爆破增透技术。结果表明,五轮山煤矿1805运输顺槽采用该技术后,大大提高了矿井生产效率,实现了快速安全掘进。
In order to solve the problems such as the coal and gas outburst index value are often overrun and the tunneling speed is slow during the tunneling process of coal seams with low gas permeability in coal seams, the penetration enhancement by deep-hole presplitting blasting is proposed. The results show that the use of this technology in the 1805 transport of the Wulunshan Coal Mine greatly improves the mine production efficiency and achieves rapid and safe excavation.