挪威掏槽与楔形掏槽相比，可以提供更可靠的每次爆破的进度。
The norwegian cut can provide more dependable advance per round than the plough cut .
在楔形掏槽眼外侧的扩槽眼也要有角度以改善爆破效果。
The loosening holes outside the plough cut are also drilled at an Angle which improves the breakage possibility.
岩石巷道； 爆破掘进； 楔形掏槽； 爆破参数；
Rock tunnel; Briving by blasting; Wedge-shaped cutting; Blasting parameters;
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