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optimization and improvement of adaptability formula of on-site mixed emulsion explosives
首发时间：2024-07-22
abstract：in order to solve the problems of single formula of mixed emulsion explosives, failure to adjust the formula of explosives in time according to different geological conditions, poor matching effect between explosive performance and rock, low utilization rate of explosive energy, large rock blasting block size, etc., theoretical calculation is used to analyze the formula of mixed emulsion explosives with different proportions. starting from the oxygen balance, explosion heat, explosion volume, explosion velocity, working capacity and other aspects of the explosives, the wave impedance of the explosives is calculated in combination with the density and explosion velocity of the explosives, so as to provide an optimized design for the problems such as the poor adaptability of the on-site mixed emulsion explosive formula to the rock breaking energy and the high production cost. in this study, 11 groups of explosive formulas with different components were designed. the results showed that as the ammonium nitrate content increased from 73% to 78%, the explosive heat increased from 2190 kj kg-1 to 2575 kj kg-1; the detonation velocity increased from 4042 m s-1 to 4467 m s-1; the oxygen balance decreased from -7.38% to -6.35%; and the explosion volume decreased from 1073 l kg-1 to 1045 l kg-1. this shows that the explosive heat, detonation velocity, and working capacity of the explosive all increase with the continuous increase of the ammonium nitrate content, while the negative oxygen balance and explosion volume of the explosive decrease with the continuous increase of the ammonium nitrate content. therefore, the explosive wave impedance and detonation parameters can be changed by adjusting the ammonium nitrate content in the explosive components, so that the explosive performance can be adjusted according to the properties of different rocks, and the diversification of explosive matching can be achieved.
keywords： explosive formulation performance optimization impedance matching energy matching
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现场混装乳化炸药适应性配方优化与改进
摘要：为解决混装乳化炸药配方单一，不能根据不同地质条件及时调整炸药配方，使炸药性能与岩石匹配效果不佳，导致炸药能量利用率不高、岩石爆破块度较大等问题，通过理论计算，对不同配比的混装乳化炸药配方进行计算分析，从炸药的氧平衡、爆热、爆容、爆速、作功能力等方面入手，结合炸药的密度、爆速计算出炸药波阻抗，为现场混装乳化炸药配方与破岩能量匹配的适应性不强、生产成本偏高等难题提供优化设计。本次研究设计出11组不同组分炸药配方，结果表明：硝酸铵含量从73%增加至78%，炸药的爆热从2190 kj?kg-1增加到2575 kj?kg-1；爆速从4042 m?s-1增加到4467 m?s-1；氧平衡从-7.38%下降至-6.35%；爆容从1073 l?kg-1下降至1045 l?kg-1。表明炸药的爆热、爆速、作功能力均随着硝酸铵含量的不断增加而增加，炸药的负氧平衡、爆容随着硝酸铵含量的不断增加而减小。因此，可以通过调整炸药组分中硝酸铵含量改变炸药波阻抗及爆轰参数，使炸药性能可以根据不同岩石性质进行调整，实现炸药匹配的多样化。
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