为探究起爆方式对复式楔形超深孔掏槽爆破效果的影响，采用LS-DYNA软件建立三维数值模型，研究4种不同起爆方式条件下复式楔形超深孔掏槽爆破破岩效果。从有效应力、岩体动态损伤、爆破成腔3个方面对不同起爆方式下的爆破效果进行评价，确定适用于复式楔形超深孔掏槽爆破的起爆方式。研究结果表明：正向起爆、中心起爆在掌子面处破碎程度低、易产生爆破大块与根底问题；反向起爆与混合起爆方式爆炸产生的能量主要作用于孔底与掌子面，有助于岩体的破碎与抛掷；同条件下混合起爆方式，有效解决了岩石大块率与爆破根底问题，掏槽效果最佳。研究结论可为隧道开挖、岩巷掘进等类似工程提供参考。

To investigate the influence of initiation methods on the blasting effect of double wedge ultra-deep hole cut blasting, a three-dimensional numerical model was established using LS-DYNA software, and the rock-breaking effects under four different initiation methods are studied. The blasting effects were evaluated from three aspects: effective stress, rock mass dynamic damage, and blasting cavity formation, and the optimal initiation method for double wedge ultra-deep hole cut blasting was determined. The results show that forward initiation and central initiation result in low fragmentation degree at the tunnel face, easily causing problems of large blasting blocks and toe rock residues; the energy generated by reverse initiation and mixed initiation mainly acts on the hole bottom and tunnel face, which is conducive to rock fragmentation and throwing; under the same conditions, the mixed initiation method effectively solves the problems of rock block rate and toe rock residues, achieving the best cut effect. Reference can be provided by the research conclusions for similar projects such as tunnel excavation and rock roadway driving.