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切割槽的形成是无底柱分段崩落法关键开采工序之一，但施工难度大、安全性差、质量不易保证。本文介绍的有切巷、无切井的深孔爆破楔形切槽法是一种施工方便、作业安全、成本低、效率高的拉槽方法，应用于软破矿体中的高分段采场具有明显的优点。
The formation of the cutting groove is one of the key mining processes without pillar caving, but the construction is difficult, the safety is poor, the quality is not easy to guarantee. In this paper, a deep hole blasting wedge grooving method with cutting lane and no cutting is a kind of slotting method with convenient construction, safe operation, low cost and high efficiency. The high section stope used in soft broken ore body has Obvious advantages.