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| Study on the influence of gas-water pressure on ultrasonic atomization characteristics |
| Zhang Xuequn |
| Shanxi Guxian Jinggu Coal Industry Co., Ltd., Linfen 042403, China |
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Abstract Spray dust reduction technology is one of the most widely used dust reduction technologies in underground mine, but there are some problems such as poor spray atomization effect and low dust capture efficiency. In order to guide the efficient application of downhole spray dust reduction technology, this study takes ultrasonic atomization dust reduction technology as the research object, and uses laboratory experiments to study the influence of gas-water pressure on ultrasonic atomization parameters. The results show that the air pressure has a significant effect on the ultrasonic spray range, atomization angle and droplet size. With the increase of air pressure, the ultrasonic spray range increases logarithmically, the atomization angle increases nearly linearly, and the droplet size decreases significantly. The water pressure has no significant effect on the ultrasonic spray range, but has a significant effect on the atomization angle. The larger the water pressure, the smaller the spray atomization angle.
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| 1 ] 顾大钊，李全生. 基于井下生态保护的煤矿职业健康防护理论与技术体系[ J ]. 煤炭学报，2021，46（ 3 ）：950 - 958.
[ 2 ] Fan Y L, Xu W J, Wang Y Y, et al. Association of occupational dust exposure with combined chronic obstructive pulmonary disease and pneumoconiosis: a cross-sectional study in China[ J ]. BMJ Open, 2020, 10( 9 ).
[ 3 ] 李 刚，吴将有，金龙哲，等. 我国金属矿山粉尘防治技术研究现状及展望[ J ]. 金属矿山，2021（ 1 ）：154 - 167.
[ 4 ] 金龙哲，刘建国，林清侠，等. 矿山喷雾降尘技术研究与应用现状综述[ J ]. 金属矿山，2023（ 7 ）：2 - 17.
[ 5 ] 金龙哲. 我国作业场所粉尘职业危害现状与对策分析[ J ]. 安全，2020，41（ 1 ）：1 - 6.
[ 6 ] 2021年我国卫生健康事业发展统计公报[ J ]. 中国病毒病杂志，2022，12（ 5 ）：321 - 330.
[ 7 ] Wang B, Wu C, Kang L G, et al. Work safety in China’s Thirtee-
nth Five-Year plan period (2016-2020): Current status, new challenges and future tasks[ J ]. Safety Science, 2018, 104: 164 - 178.
[ 8 ] Liu J, Lin M, Jin L, et al. Influence of Molasses on the Explosion and Decomposition Properties of the Coal Dust Deposited in Underground Mines[ J ]. Energies, 2023, 16( 6 )：2 758.
[ 9 ] 朱月敏. 煤矿安全事故统计分析[ D ]. 阜新：辽宁工程技术大学，2012.
[ 10 ] Zhou G, Zhang Q, Hu Y, et al. Dust removal effect of negatively-
pressured spraying collector for advancing support in fully mechanized coal mining face: Numerical simulation and engineering application[ J ]. Tunnelling and Underground Space Technology, 2020, 95: 103 149.
[ 11 ] 秦波涛，周 群，李修磊，等. 煤矿井下磁化水与表面活性剂高效协同降尘技术[ J ]. 煤炭学报，2017，42（ 11 ）：2 900 - 2 907.
[ 12 ] 王鹏飞，刘荣华，汤 梦，等. 煤矿井下高压喷雾雾化特性及其降尘效果实验研究[ J ]. 煤炭学报，2015，40（ 9 ）：2 124 - 2 130. |
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