摘要
为直观深入地研究导爆管雷管爆炸过程中头部聚能射流和尾部杵体的传播规律,采用高速摄像技术对8号铝壳工业导爆管雷管爆炸过程进行室内试验研究。精细观察和测量分析多组不同帧数及曝光率的高速摄像图,结果表明该雷管爆炸后约50μs,其爆炸火焰最大,侧向爆炸气体及冲击波的作用范围在11 cm左右;轴向聚能射流由于受到尾部杵体的拉应力作用速度先降低,并在雷管爆炸后105μs左右开始与尾部杵体分离,断裂后拉应力突然消失,速度陡升,其射流最大距离在65 cm以上,且在55 cm距离范围内其射流平均速度为4 024 m/s,尾部杵体的平均速度为1 290 m/s,传播的最大距离约为60 cm。
In order to figure out propagation law of pestle and jet flow in No. 8 aluminum detonator explo- sion intuitively and further, indoor laboratory experiments were carried out using high-speed photography. The average velocity of normal nonel tube using in test is 1 750 m/s. Through observation and calculation analysis of slow motion picture taken by high-speed camera, the results show that biggest explosion flame appears 50 Ixs after detonating, that effect range of lateral explosive gas and shock wave is about 11 cm, at a distance outside range, the main killing form of lateral effect is shell fragments. The speed of axial shaped head jet flow decreases first due to the tensile stress of tail pestle, then the head jet flow separates from the tail pestle 105 p,s after explosion, coming along with the increase of head jet flow＂ speed as the tensile stress suddenly disappears, and that the maximum distance of the head jet flow is more than 65 cm, in range of 55 cm distance the average veloci about 1 290 m/s, and maximum transmission of jet is 4 024 m/s, the average velocity of tail pestle is stance is about 60 cm.
出处
《中国安全科学学报》
CAS
CSCD
北大核心
2014年第2期47-51,共5页
China Safety Science Journal
基金
国家自然科学基金资助(51104112)
关键词
导爆管雷管
高速摄像
聚能射流
尾部杵体
传播规律
安全防范
nonel detonator
high-speed photography
jet flow
tail pestle
safety precautionspropagation law
