摘要
根据微差爆破理论，分析了立井基岩掘凿采用深孔爆破时，应用直眼分段掏槽的爆破效率和对岩石破碎块度影响的机理，并通过实验室的模型试验，验证了机理的客观性。
In the light of the theorety of millisecond delay blasting the machanism of im proving blasting fragmentsize is analysed when stage parallelhole cut is used in rock blasting in shaft drifting.Besed on the above the model test about stage parallelhole cut is carried out in laboratory.
关键词
筒形直眼分段掏槽
微差爆破
破碎块度
模型试验
stage parallelhole cut,millisecond delay blasting,frag mentsize,model test
