摘要
直眼掏槽是隧道掘进深孔爆破中的关键技术 ,炮孔深度对掏槽爆破效果有重要影响。本研究通过建立槽腔内抛体运动的二相流力学模型 ,揭示了炮孔深度影响掏槽效果的物理本质 ,阐述了炮孔深度对掏槽效果的影响规律 ;为含空孔直眼掏槽爆破参数设计提供了依据。理论分析结果与工程实践相吻合。
The parallel cut is a key technique for excavation of tunnels by deep hole blasting The depth of a blast hole affects the cut blasting greatly In this study,the physical nature and law of which the effect of cut blasting is influenced by the hole depth have been uncovered through the development of a two phase flow mechanical model for the throwing of broken rock pieces The study has provided a base for design of blasting parameters of parallel cut The analysis results are in line with the engineering practice
出处
《工程爆破》
2001年第1期1-6,共6页
Engineering Blasting
基金
国家自然科学基金资助项目 !(批准号 5 99740 19)
