KCl含量对乳化炸药压力减敏的影响

doi:10.11949/j.issn.0438-1157.20150228

化工学报 ›› 2015, Vol. 66 ›› Issue (12): 5179-5184.DOI: 10.11949/j.issn.0438-1157.20150228

• 其他 • 上一篇

KCl含量对乳化炸药压力减敏的影响

杜明燃¹, 汪旭光², 颜事龙¹

1 安徽理工大学土木建筑学院, 安徽淮南 232001;
2 北京矿冶研究总院, 北京 100044

收稿日期:2015-02-13 修回日期:2015-09-21 出版日期:2015-12-05 发布日期:2015-12-05
通讯作者: 颜事龙
基金资助:
国家自然科学基金项目(51134012)。

Influences of KCl content on pressure desensitization of emulsion explosives

DU Mingran¹, WANG Xuguang², YAN Shilong¹

1 School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan 232001, Anhui, China;
2 Beijing General Research Institute of Mining and Metallurgy, Beijing 100044, China

Received:2015-02-13 Revised:2015-09-21 Online:2015-12-05 Published:2015-12-05
Supported by:
supported by the National Natural Science Foundation of China (51134012).

摘要/Abstract

摘要：

在相同的乳胶基质中分别添加0%、2%、4%、6%和8%的KCl,再分别用膨胀珍珠岩和化学发泡剂敏化制备2组乳化炸药。测试各乳化炸药水中爆炸冲击波,得出它们未受压和受压后的爆炸冲击波压力峰值,利用波峰值计算乳化炸药的压力减敏度。依据压力减敏度数值,分析KCl含量对乳化炸药压力减敏作用的影响,并测试不同KCl含量下分散相的析晶点,分析不同KCl含量造成压力减敏变化的原因。结果表明:KCl含量在0%～2%之间时,乳化炸药的压力减敏度无明显变化,KCl含量在2%～8%之间时,KCl含量对乳化炸药的压力减敏度有较大影响,而且呈现出正线形相关性。

关键词: 爆炸, 乳化炸药, 敏化剂, 压力减敏, 结晶, 氯化钾

Abstract:

An emulsion matrix was mixed with 0%, 2%, 4%, 6% and 8% by the mass of KCl separately, and then expanded perlite and chemical foaming agent as sensitizing agent were used separately to make two groups of emulsion explosives. Their explosion shock waves were tested in water before and after compression by shock waves produced by the host charge underwater. The pressure desensitization degrees of these emulsion explosives were calculated with the peak pressure values of tested shock waves and compared, and the influence of KCl content was analyzed. Results show that when KCl content is between 0% and 2%, the pressure desensitization degrees of the emulsion explosives are unchanged; when KCl content is between 2% and 8%, KCl content shows strong influence, desensitization degree increases with the KCl content. It means that the anti-pressing performance of explosives is worse with the increase of KCl content, the change of the quality and crystallization point of dispersed phase is a factor to change the pressure desensitization degree. These results can provide reference for coal mine blasting and further study on mechanism of pressure desensitization.

Key words: explosions, emulsion explosive, sensitizing agent, pressure desensitization, crystallization, KCl

中图分类号:

TQ560.7
O384

杜明燃, 汪旭光, 颜事龙. KCl含量对乳化炸药压力减敏的影响[J]. 化工学报, 2015, 66(12): 5179-5184.

DU Mingran, WANG Xuguang, YAN Shilong. Influences of KCl content on pressure desensitization of emulsion explosives[J]. CIESC Journal, 2015, 66(12): 5179-5184.

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KCl含量对乳化炸药压力减敏的影响

Influences of KCl content on pressure desensitization of emulsion explosives

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