基于连续压导探针的炸药爆速和临界直径测试方法  

Detonation Velocity and Critical Diameter Testing Method for Explosive Based on Pressure-conduct Probe Design

作　　者：缪玉松[1] 李晓杰[1] 闫鸿浩[1] 王小红[1] 李科斌[1] 

机构地区：[1]大连理工大学工程力学系,大连辽宁116024

出　　处：《爆破器材》2016年第6期61-64,共4页Explosive Materials

摘　　要：临界直径是确定炸药合理装药直径、预防炸药拒爆和不完全爆轰的重要指标,对炸药性能提高和高效利用有着十分重要的意义。设计了一种连续压导探针和楔形装药装置,在对炸药爆速进行测试的同时,利用炸药在临界直径不完全爆轰的特征,通过寻找爆轰波传播的拐点确定炸药临界直径。试验结果表明:装药密度为0.9g/cm3的铵油炸药爆速为3 261 m/s,临界直径为12.5 mm。提供了一种可同时测得炸药爆速和临界直径的方法,该方法简单,试验费用低,对炸药参数测试具有一定的指导意义。As an important parameter to determine the reasonable charge diameter and avoid misfire and incomplete detonation,the critical diameter of explosive has a vital signification on performance improvement and utilization efficiency.In this paper,a continuous pressure-conduct probe and wedge charge device was designed to measure the detonation velocity of the explosive and its critical diameter was determined using the incomplete detonation characteristics and locating the detonation inflection point. The experimental results on the ANFO having a charge density of 0. 9 g / cm3 show a detonation velocity of 3 261 m / s and a critical diameter of 12. 5 mm. It provides a simple and low cost method for testing detonation velocity and critical diameter of explosives at one time,which can be taken as a guideline for the determination of explosive parameters.

关 键 词：爆炸力学 临界直径 压导探针 爆速 炸药参数 

分 类 号：TD235.1[矿业工程—矿井建设]