工程爆破

2001, (01) 1-6

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含空孔直眼掏槽爆破效果分析模型
A MODEL FOR ANALYSIS OF THE BLASTING EFFECT OF PARALLEL CUT

张奇,王小林,杨永琦,王树仁
ZHANG Qi 1,WANG Xiao lin 1,YANG Yong qi 2,WANG Shu ren 2 (1 Xin University of Science and Technology,Xin 710054,China; 2 China University of Mining and Technology Beijing,Beijing 100083,China)

摘要(Abstract):

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

关键词(KeyWords): 直眼掏槽;深孔爆破;隧道掘进
Parallel cut; Deep hole blasting; Tunnel excavation

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基金项目(Foundation): 国家自然科学基金资助项目 !(批准号 5 99740 19)

作者(Author): 张奇,王小林,杨永琦,王树仁
ZHANG Qi 1,WANG Xiao lin 1,YANG Yong qi 2,WANG Shu ren 2 (1 Xin University of Science and Technology,Xin 710054,China; 2 China University of Mining and Technology Beijing,Beijing 100083,China)

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