工程爆破

2000, (01) 21-24

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槽腔顶部爆破漏斗形成及作用
FORMATION AND FUNCTION OF BLASTING FUNNEL AT TOP OF CUT CAVITY

张奇,杨永琦,王树仁,王仲琦
ZHANG Qi 1, YANG Yong qi 2, WANG Shu ren 2, WANG Zhong qi 3 (1. Xi'an Mining Institute, Xi'an, Shanxi 710054, China; 2. Beijing district, China University of Mining and Technology, Beijing 100083, China; 3. Beijing Institute of Technology,

摘要(Abstract):

空孔直眼掏槽爆破时 ,因槽腔内高压爆生气体膨胀 ,岩石碎块沿轴向向槽外运动。孔口非装药段在爆炸载荷作用下形成爆破漏斗 ,成为腔内抛体的前沿。本文结合模型实验和高速摄影观测 ,探讨槽腔顶部漏斗范围 ,提出顶部漏斗抛掷及作用过程
In parallel cut blasting, the broken rocks move out of the cut cavity in the axial direction of cut cavity because explosion gases expand in the cavity. A blasting funnel will be formed in the noncharging section of a blasthole under explosion load. It becomes the front of the throwing body in the cavity. In this paper, the dimension of blasting funnel at top of cut cavity is discussed and the throwing and action processes of the funnel are described on the basis of model experiment and high speed photograph.

关键词(KeyWords): 直眼掏槽;爆破漏斗;高速摄影
Parallel cut; Blasting funnel; High speed photograph

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助课题 !(批准号 5 9972 0 19)

作者(Authors): 张奇,杨永琦,王树仁,王仲琦
ZHANG Qi 1, YANG Yong qi 2, WANG Shu ren 2, WANG Zhong qi 3 (1. Xi'an Mining Institute, Xi'an, Shanxi 710054, China; 2. Beijing district, China University of Mining and Technology, Beijing 100083, China; 3. Beijing Institute of Technology,

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