焦坪矿区高瓦斯综放面坚硬顶煤预先爆破弱化试验研究

Study on hard top coal pre-blasting and weakening for high gassy fully mechanized top coal caving mining face in Jiaoping mining area

本文介绍了铜川焦坪矿区高瓦斯综放工作面坚硬顶煤预先爆破弱化试验情况及有关经验。现场试验结果表明，在高瓦斯综放工作面，采用倾向工艺巷方式对坚硬顶煤进行预先爆破弱化，效果明显、安全性较高，对类似条件矿井具有一定的参考价值。

In this paper, the test on hard top coal pre-blasting and weakening for high gassy fully mechanized top coal caving mining face in Jiaoping mining area were introduced. The test study showed that the top coal pre-blasring and weakening mode with the mining gateway layout along the dip direction in high gassy fully mechanized min- ing face had obvious effects and higher safety, which had some reference value for the similar coal mine.