摘要
针对炸药爆速精确测量的需求,本文围绕装药厚度、殉爆传播规律及测试方法开展试验研究。通过设计不同装药厚度(10、15、20、25、30 mm)及殉爆距离(1、2、3、5 cm)的对比试验,采集铜管保护式探针与无保护探针的测试数据,结合电压-时间(U-t)特征曲线的转换与微分处理,获取炸药瞬时爆速变化曲线。研究结果表明:铜管保护可有效避免爆轰干扰,显著提升数据的可靠性;乳化炸药爆轰波传播呈现明显的波动性特征,且传播过程不稳定,爆速数值与传播稳定性均随装药厚度的增加而逐步提升;殉爆距离增大导致被发装药瞬时爆速下降且初始段稳定性显著降低。本试验建立的测试方法与揭示的规律,可为炸药性能评估及爆轰机理分析提供关键试验依据。
To meet the requirement for the accurate measurement of explosive detonation velocity,this paper conducts experimental study on charge thickness,sympathetic detonation propagation,and testing methods.Comparative experiments are designed with different charge thicknesses(10,15,20,25,30 mm)and sympathetic detonation distances(1,2,3,5 cm).And,datas from tests with copper tube-protected probes and unprotected probes are collected.Combined with the conversion and differential processing of voltage-time(U-t)characteristic curves,the instantaneous detonation velocity variation curves of explosives are obtained.The research results show that copper tube can effectively avoid detonation interference and significantly improve the reliability of test datas;the detonation wave propagation of emulsion explosives presents obvious fluctuation characteristics with an unstable propagation process,and both the detonation velocity and propagation stability are gradually improved with the increase of charge thickness;the increase of transmission distance leads to a decrease in the instantaneous detonation velocity of the acceptor charge and a significant reduction in the stability of the initial propagation stage.The testing method established and the laws revealed in this experiment can provide key experimental basis for explosive performance evaluation and detonation mechanism analysis.
作者
张天金
陈金华
ZHANG Tianjin;CHEN Jinhua(China Coal Research Institute,Beijing 100013,China;CCTEG Huaibei Blasting Technology Research Institute Co.,Ltd.,Huaibei 235000,China)
出处
《煤矿爆破》
2025年第4期9-15,共7页
Coal Mine Blasting
关键词
爆速测量
炸药爆轰特性
殉爆
瞬时爆速
detonation velocity measurement
explosive detonation characteristics
sympathetic detonation
instantaneous detonation velocity
