North China Institute of Science and Technology
China University of Mining and Technology

本研究旨在探究不同喷尘压力下喷射磷酸二氢铵对其分散状况及抑制9.5%甲烷爆炸特性的影响。通过在60L定容燃烧弹中进行实验,将高速摄像和压力传感器采集到的数据进行处理并结合热力学和空气动力学进行分析,发现喷尘压力通过影响分散状况对磷酸二氢铵的抑爆效果产生显著影响。实验结果表明,在1.2MPa的喷尘压力下,3g和6g磷酸二氢铵的分散效果不佳。9g磷酸二氢铵在各种喷尘压力条件下均能实现较为均匀的分散,尤其在0.8MPa喷尘压力下表现最为显著。在较高的喷尘压力下,磷酸二氢铵对爆炸初始发展的抑制效果有所减弱。0.8MPa的适中喷尘压力条件下,磷酸二氢铵展现出了优异的分散及抑爆效果。这些发现为理解喷尘压力对磷酸二氢铵抑制甲烷爆炸效果的影响提供了重要的实验依据,并对制定有效的矿井防爆措施具有重要的指导意义。

The purpose of this study is to investigate the effect of spraying ammonium dihydrogen phosphate(ADP) at different dust pressure on its dispersion and the suppression of 9.5 per cent methane explosion characteristics.Through the experiments in a 60L fixed-capacity incendiary bomb, the data collected by high-speed camera and pressure sensor were processed and analysed in combination with thermodynamics and aerodynamics, and it was found that the dust spraying pressure had a significant effect on the explosion suppression78of ADP by influencing the dispersion condition.The experimental results show that 3g and 6g of ADP arepoorly dispersed under the dust spray pressure of 1.2 MPa.9 g of ADP in a variety of dust spraying pressureconditions can achieve a more uniform dispersion, especially in the 0.8MPa dust spraying pressure is the mostsignificant performance.At higher dust pressure, the inhibition effect of ADP on the initial development of theexplosion was weakened, and at a moderate dust pressure of 0.8 MPa, ADP showed excellent dispersion andexplosion suppression effects.These findings provide an important experimental basis for understanding the influence of dust spray pressure on the inhibition effect of ADP on methane explosion, and are of great significance as a guide for the development of effective mine explosion prevention measures.

国家自然科学基金面上项目(51874134);华北科技学院科技基金项目(3142018018)

李睿德,徐景德,张延炜,荣晶晶 .喷尘压力对磷酸二氢铵分散状况及抑制甲烷爆炸影响实验研究[J].华北科技学院学报,2024,21(1):87-96

LI Ruide,XU Jingde, ZHANG Yanwei,RONG Jingjing.Experimental study on the effect of dust sprayingpressure on the dispersion condition of ammonium dihydrogen phosphate and the suppression of methane explosion[J].Journal of North China Institute of Science and Technology,2024,21(1):87-96