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为加快岩巷施工进度,提高岩巷循环单进,必须对旧有的爆破方式进行适当的改进。就目前的钻爆法来说,有如下问题:炮眼利用率低、掏槽孔不合理(布孔不合理、钻孔不规范、钻孔直径太小、装药量少,装药结构不合理)、装药封孔速度慢且不牢固等,该文针对钻爆法施工各爆破要素进行针对性改进,增加了爆破效率,提高了炮眼利用率,降低了循环作业时间,减少了施工作业人员,有效的解决了中硬岩石条件下中深孔爆破的相关问题。
In order to speed up the rock roadway construction progress and improve rock roadway single cycle, the old blasting mode must be properly improved. As far as the current drilling and blasting method is concerned, the following problems exist: low utilization of blastholes and unreasonable cutting holes (unreasonable cloth holes, non-standard drilling holes, too small hole diameters, small charge and improper charging structure ), Filling slow and unstable sealing, etc. In this paper, the blasting blasting method for the construction of various blasting elements targeted to improve and increase the blasting efficiency and improve the utilization of blasthole, reducing the cycle time and reduce the construction workers , Which effectively solves the related problems of medium-deep borehole blasting under medium-hard rock conditions.