半煤岩巷掘进爆破参数及支护技术研究

Study on blasting parameters and support technology for driving in semi-coal-rock roadway

本文以3806运输巷半煤岩巷爆破掘进为工程背景,对半煤岩巷道爆破参数进行了选择计算,从而确定了爆破参数。采用锚杆+锚索+金属网的联合支护方式,平均每循环可掘进1.84m,炮眼利用率可达到93%以上,成巷效果良好,巷道围岩变形量较小,实现了巷道的安全快速掘进。

In this paper,the blasting parameters of the half coal roadway in the 3806 transportation roadway are selected and calculated,and the blasting parameters are determined.Using the combined support method of Bolt＋anchor＋metal NET,the average per cycle can be dug into 1.84m,the perforation utilization can reach more than 93%,the lane effect is good,the deformation of the surrounding rock is small,and the safe and fast excavation of roadway is realized.