在岩巷掘进过程中使用小直经钻尖，小直径药卷和小直径锚杆，可实现光面爆破，有效提高成巷建设，降低掘进成本。
This paper introduces driving rock drift with minor diameter bit , minor diameter cartridage and minor diameter bolt , it can realize smooth blasting , roadway speed is raised , driving cost is reduced .
药卷锚杆