为改变平泉小寺沟矿业有限公司危险系数高、施工成本高、生产效率低的人工开凿切割井拉槽工艺，通过分析各类拉槽工艺特点，并考虑小寺沟铜矿矿房分段高、拉槽长度长和矿岩为中硬的开采特点，利用上向束状中深孔爆破和微差分段一次爆破技术，实现上向束状中深孔微差分段一次爆破起槽和分段多次爆破扩槽的无切割井拉槽工艺。在小寺沟铜矿 630 m水平 10勘探线半—12勘探线钼采场开展了上向束状中深孔起槽和扩槽的拉槽试验，取得了良好的试验效果，解决了矿山实际问题，并在 630 m、598 m和 581 m水平进行了工艺推广。此工艺不仅改变了矿山切割井切割巷拉槽现状，而且在高分段中硬矿岩中表现出较高适用性和可控性，有效保证了矿山安全、高效、稳定生产。

In order to change the high risk, high construction cost, and low production efficiency of the manual cuttingshaft slotting technology in Pingquan Xiaosigou Mining Co., Ltd., by analyzing the characteristics of various slottingtechnologies and considering the mining characteristics of the Xiaosigou Copper Mine, such as high ore chambersublevels, long slotting lengths, and medium‑hard rock, the upward bundle medium‑long hole blasting and micro‑differen‑tial sublevel single blasting technology were utilized to achieve the non‑cutting shaft slotting technology of upwardbundle medium‑long hole micro‑differential sublevel single blasting slotting and multi‑time blasting slot expansion.Based on this technology, slotting tests for upward bundle medium‑long hole slot initiation and slot expansion wereconducted in the molybdenum mining area from the middle Exploration Line 10 to Exploration Line 12 at the 630 mlevel in the Xiaosigou Copper Mine, achieving good test results, solving practical problems in the mine and promotingthe technology at the 630 m, 598 m, and 581 m levels. This technology not only changed the current situation of cuttingshaft and slotting roadway in the mine, but also showed high applicability and controllability in high sublevels of medium‑hard rock, effectively ensuring the safe, efficient, and stable production of the mine.