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针对煤矿深部井筒煤层埋藏深、瓦斯具有强突出危险性的问题,选用性能优良的煤矿瓦斯抽采水胶药柱,通过理论计算分析了药柱的爆破松动半径与煤-岩界面处的装药方式,并应用于某矿深部井筒深孔爆破快速揭煤的参数与工艺设计。结果表明:该方法能够实现深部井筒安全高效揭煤,也为以后井筒揭突出煤层提供了一条有效的途径。
Aiming at the problem of deep wellbore coal seams in coal mines, the gas has a strong prominence danger, the coal mine gas drainage plastic colloidal pillars with good performance are selected. Through the theoretical calculation, the blasting radius and the charge at the coal-rock interface are analyzed Method, and applied to the deep borehole blasting a certain mine deep hole blasting parameters and process design. The results show that this method can safely and efficiently expose deep wellbores and provides an effective way for later wellbore to reveal coal outburst.