爆破2026，Vol.43Issue(2)：245-252,8.DOI:10.3963/j.issn.1001-487X.2026.02.026
混装乳化炸药基质温度与敏化剂浓度匹配试验研究及应用
Experimental Study and Application on the Matching of Temperature and Sensitizer Concentration for Bulk Emulsion Explosive Matrix
摘要
Abstract
This study systematically investigated the synergistic relationship between matrix temperature and so-dium nitrite concentration to resolve density unevenness and explosive power instability in site-mixed emulsion explo-sives caused by the mismatch between matrix temperature and sensitizer(sodium nitrite)concentration during pro-duction.Using an orthogonal experimental design,matrix temperature gradients ranging from 40℃ to 70℃ and sodi-um nitrite concentration gradients ranging from 1.2％to 2.8％were systematically established.Multiple sets of com-parative tests were conducted to comprehensively examine the impact of these two factors on the density of emulsion explosives.The experimental results demonstrate that matrix temperature plays a critical role in determining the foa-ming reaction rate,with elevated temperatures markedly accelerating the reaction and,consequently,the foaming process.However,this acceleration often leads to excessive foaming,consequently reducing the explosive density.In contrast,lower temperatures slow the reaction,often resulting in insufficient foaming,which increases explosive densi-ty and adversely affects blasting stability.Additionally,the concentration of sodium nitrite,acting as the sensitizer,di-rectly influences both the foaming efficiency and the structural stability of the bubbles.For different matrix tempera-tures,there is an optimal concentration range to achieve ideal explosive density and detonation performance.Based on comprehensive experimental data,this study developed practical guidelines for sodium nitrite proportions across vari-ous matrix temperature ranges.These guidelines explicitly recommended specific sensitizer concentrations for low-to high-temperature conditions,providing quantitative references for field applications.Field validation confirmed that implementing this matching table and associated control techniques substantially enhanced the accuracy of emulsified explosive density regulation.This improvement not only boosted the effective release of explosive energy but also miti-gated safety risks,including density-related misfires,resulting in overall optimization of both blasting performance and operational safety.This study's findings offer valuable theoretical insights and practical applications for enhancing quality control in field-mixed explosives and systematically improving blasting performance.关键词
混装乳化炸药/基质温度/敏化剂浓度/密度控制Key words
bulk emulsion explosive/matrix temperature/sensitizer concentration/density control分类
矿业与冶金引用本文复制引用
陈运成,管伟明,杨志勇,赵明生,颜世留,李铁龙,侯得峰..混装乳化炸药基质温度与敏化剂浓度匹配试验研究及应用[J].爆破,2026,43(2):245-252,8.基金项目
地球深部探测与矿产资源勘查国家科技重大专项基金资助项目(2024ZD1003406) （2024ZD1003406）
非煤露天矿山安全智能开采国家矿山安全监察局重点实验室开放课题基金资助项目(2024-K03、2024-K05) National Major Science and Technology Project for Deep Earth Exploration and Mineral Resources Exploration(2024ZD1003406),Open Fund Project of the National Mine Safety Administration Key Laboratory for Safe and Intelligent Mining of Non-coal Open-pit Mines(2024-K03,2024-K05) （2024-K03、2024-K05）
