深孔预裂爆破技术在大倾角薄煤层中的应用

Application of Deep-hole Pre-splitting Blasting Technology in High Inclinationangle and Thin Coal Seam

介绍了深孔预裂爆破技术的工艺流程及现场试验情况。研究表明，在大倾角薄煤层应用深孔预裂爆破技术。可有效地消除激发突出的应力和煤体结构的不均匀性，提高煤体强度和煤层透气性，明显提高瓦斯的抽采效果．有效预防和消除在掘进过程中煤与瓦斯突出的危险性，且提高巷道掘进速度2-3倍。

This paper introduces the technological process and on - the - spot tests of deep - hole pre - splitting Hasting technology.The research shows that the technology can effectively eliminate the stress to initiate the outbtorsi and the nonunifonmity of the coal rases stmcttwe, improve the coal strength and seam permeability, obviously raising gas drainage effect form coal seam apparently, effectively prevent and eliminate the coal and gas outburst danger during the roadway excavation period and the roadway driving speed is inemmed by 2-- 3 times.