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通过使用中深孔爆破技术,利用直眼掏槽,根据经验公式计算出了最优抵抗线,选取了合适的爆破参数,提高了巷道的掘进速度,减少了材料消耗。实践证明,中深孔爆破技术在煤矿中很有推广价值。
Through the use of middle-deep hole blasting technology and straight-eye undercutting, the optimal resistance line is calculated based on empirical formula, and the appropriate blasting parameters are selected to improve the tunneling speed and reduce the material consumption. Practice has proved that in the deep-hole blasting technology in the coal is very promotional value.