National Professional Center Laboratory of Basic Research of Mine Gas and Dust Control Technology, China University of Mining and Technology
School of Safety Engineering, China University of Mining and Technology
College of Engineering, PekingUniversity
School of Safety Science and Emergency Management, Wuhan University of Technology

The priority direction of mine dust control is to suppress dust generation and flying at the source. Foam, a gasliquidtwo-phase medium, has some unique advantages of large dust covering area, strong adhesion ability and fast wettingof dust. It is an efficient way of dust suppression, especially for respiratory dust. However, there is limited research on the morphology and properties of dust suppression foam in the past, resulting in a certain blindness in the preparation andutilization of dust suppression foam. And there is a problem of a large amount of spray foam in exchange for higher dustsuppression efficiency, which restricts the low-cost application of this technology in mines. Therefore, in this study, a theoreticalderivation was combined with experimental research and quantitative analysis to study the process and law of dustsuppression foam drain, the micromorphology of dust suppression foam, the performance influence mechanism and thequantitative evaluation method. These results show that the drain factor w is related to the height of the foam column andthe liquid of foam in the foaming process. The higher height of the dust suppression foam and the greater liquid content,the value of the discharge factor w will be lower. The predicted value of w and the theoretical discharge curve calculatedby the drainage model show a high degree of consistency with the experimental results, which verifies the accuracy of thetheoretical model. The results show foam size distribution, average diameter with the concentration of foaming agentchanges. At a low concentration (1%), thenumber of foam decreases and large particle size bubbles increase. The addition of low-concentration (

国家自然科学基金资助项目(52274237, 51474216, 51504249)

王和堂，章琦，王德明，等. 矿山抑尘泡沫基础特性及性能定量评估方法[J]. 煤炭学报，2023，48(4)：1584−1595

WANG Hetang，ZHANG Qi，WANG Deming，et al. Basic characteristics of mine dust suppression foam and the quantitative evaluation method of its performance[J]. Journal of China Coal Society，2023，48(4)：1584−1595