摘要
利用密闭爆发器实验系统,对一种新型裂岩器材的装填药剂燃烧性能进行了研究,以此对后续产品中的药剂组分、比例进行指导性调控。设计了9∶1~4∶6不同梯度组分的混合药剂进行密闭爆发器实验,对所有药剂的p-t曲线及d p/d t-t曲线分析后确定火药力实验中所用药剂配比为7∶3与5.5∶4.5。使用0.12 g/cm^(3)、0.2 g/cm^(3)两种装填密度对混合药剂进行火药力实验,参照火药燃速处理方法,假设混合药剂为单一整体,密度为1.5 g/cm^(3),在此假设基础上得到药剂燃烧的Γ-ψ曲线及相应的火药力、燃速系数等参数,其中单+添(7∶3)配方的火药力最高,为564.87 kJ/kg,双+添(7∶3)配方的火药力比之略低,但仍高于5.5∶4.5配方的火药力。通过对药剂的Γ-ψ曲线分析解释了双+添(5.5∶4.5)配方在实验中出现明显燃烧未完全现象的原因;对混合药剂对应火药力、燃速系数的分析发现,火药对整体药剂的做功能力占主导性因素,火药占比的上升会显著提高药剂的燃烧效能,但装填密度的改变对两种火药燃烧效果的影响却不一致。装填密度的上升会导致单基药配方燃烧效能的下降,而双基药配方会出现燃烧效能的上升。
Using a closed explosion experimental system,the combustion performance of a new type of rock-splitting equipment′s loading agent was studied,providing guidance for the drug components and proportions in subsequent products.Different gradient components with a ratio of 9∶1 to 4∶6 were designed to mix the loading agents for the closed explosion experimental,and the p-t curve and d p/d t-t curve of all agents were analyzed.The drug ratio used in the explosive strength experiment was determined to be 7∶3 and 5.5∶4.5.The mixed drugs were subjected to the explosive strength experiment using two types of loading densities,0.12 g/cm^(3) and 0.2 g/cm^(3).The mixed drug was assumed as a single entity with a density of 1.5 g/cm^(3),referring to the method of treating the gunpowder burning speed.On this assumption basis,theΓ-ψcurve of the drug combustion and the corresponding parameters such as explosive strength and burning rate coefficient were obtained,among which the explosive power of the single+additive(7∶3)formula was the highest,reaching 564.87 kJ/kg.The explosive power of the dual+additive(7∶3)formula was slightly lower but still higher than that of the 5.5∶4.5 formula.The reason for the apparent incomplete combustion phenomenon observed in the experiment of the dual+additive(5.5∶4.5)formula was explained by analyzing theΓ-ψcurve of the drug.The analysis of the corresponding explosive strength and burning rate coefficient of the mixed drugs showed that the explosive force of the gunpowder on the overall drug is the dominant factor,and the increase in the ratio of the gunpowder will significantly improve the efficiency of the drug′s combustion.However,the effect of the change in loading density on the burning of the two types of gunpowder is inconsistent.The increase in loading density will cause a decrease in the burning efficiency of the monobasic formula,while the dual-base formula will exhibit an increase in burning efficiency.
作者
马健行
王彦君
赵静
陈华东
徐建勇
黄寅生
MA Jian-xing;WANG Yan-jun;ZHAO Jing;CHENG Hua-dong;XU Jian-yong;HUANG Yin-sheng(School of Chemistry and Chemical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China;Luzhou North Chemical Industry,Luzhou 646000,China;Shanghai Meitong Security Engineering Technology Company,Shanghai 200090,China)
出处
《爆破》
CSCD
北大核心
2023年第2期166-172,190,共8页
Blasting
关键词
非炸药爆破
裂岩管
密闭爆发器
燃烧性能
non-explosive methods
rock breaking cartridge
closed explosion experimental system
combustion performance
