高压物理学报2024，Vol.38Issue(4)：137-144,8.DOI:10.11858/gywlxb.20240712
低温环境对乳化炸药爆炸性能的影响
Effect of Low Temperature Environments on the Explosive Properties of Emulsion Explosives
摘要
Abstract
The decline of explosive properties of emulsion explosives will seriously affect the blasting effect in the environment of low temperature.The study on the evolution law of explosive properties of the emulsion explosives in coordination with the temperature variation of the emulsion explosives presents a certain engineering application value.A series of precise temperature control devices for emulsion explosives were designed,and then the detonation velocity,the brisance,the working capacity and the overpressure of air shock wave were measured with various temperature of 25,0,-5,-10 and-15℃.Meanwhile,the microstructure of the emulsion explosives was characterized.The experimental results showed that when the temperature of the emulsion explosives was reduced from 25℃to-15℃,the detonation velocity of the explosive was reduced from 4227 m/s to 3291 m/s,the brisance of the explosive was reduced from 13.0 mm to 5.2 mm,the working capacity of the explosives was reduced from 323 mL to 208 mL,and the overpressure of air shock wave was reduced from 284.9 kPa to 115.8 kPa.With the decrease of the temperature of the emulsion explosives,the precipitation of ammonium nitrate crystal increased along with the partial structure failure of the emulsion particles,resulting in changes in the microstructure and declines in the explosive properties of the emulsion explosives.Low-temperature environment mostly affected the brisance of emulsion explosives,but slightly affected the detonation velocity.With the decrease of temperature,the decline amplitude of explosive properties would be accelerated.It is suggested that the design of blasting properties should be adjusted according to the decline amplitude of explosive properties.关键词
乳化炸药/低温环境/温度控制装置/爆炸性能Key words
emulsion explosives/cryogenic environment/temperature control device/explosive properties分类
数理科学引用本文复制引用
刘赛,韩体飞,王猛,陈凯强,刘广鹏,姜鑫,孙彦臣..低温环境对乳化炸药爆炸性能的影响[J].高压物理学报,2024,38(4):137-144,8.基金项目
安徽理工大学研究生创新基金(20232cx2117) （20232cx2117）
