Air bubble curtain anti-fouling systems, which meet both the environmental standards of suspended solids diffusion and navigation requirements, have unique advantages in environmental dredging technology. Through the bubble plume formed by dense bubble hole jets, the bubble curtain blocks the material exchange between the designated area and other areas in the water to prevent the diffusion of suspended pollutants and protect the water environment. The protection efficiency of the bubble curtain is determined by the fusion of the bubble flow in the rising process and the stability of the plume under the action of a cross flow. The feasibility of a bubble curtain in field engineering is evaluated in this paper. Using two fluid models, the time-varying process of bubble fusion and migration in a bubble plume is analyzed. The dynamic behavior characteristics of the bubble plume are obtained, and the factors influencing the stability of the bubble plume are quantitatively described. The results show that the turbidity of the water body decreases in front of and behind the bubble curtain, which proves that the bubble curtain system is practical in dredging engineering. The number, size range and median value of bubbles in the flume are related to the ventilation pressure and pipe structure. There are three different phenomena in the half-width of the bubble plume at different heights. With the general linear model, it is concluded that the fusion height of the bubble plume is the most sensitive to the change in the bubble tube hole spacing and that the migration characteristics of the bubble plume are most significantly affected by the air flow at the bubble hole. The mechanical analysis of the plume stability shows that the Weber number is the most important parameter affecting the failure of the bubble curtain.

同时满足悬浮物扩散和导航要求的环境标准的气泡幕防污系统在环境疏technology技术方面具有独特的优势。气泡幕通过密集的气泡孔喷流形成的气泡羽流，阻止了指定区域和水中其他区域之间的物质交换，从而防止了悬浮污染物的扩散并保护了水环境。气泡帘的保护效率取决于上升过程中气泡流的融合以及在交叉流的作用下羽流的稳定性。本文评估了气泡帘在现场工程中的可行性。使用两个流体模型，分析了气泡羽流中气泡融合和迁移的时变过程。获得了气泡羽流的动态特性，定量描述了影响气泡羽流稳定性的因素。结果表明，气泡帘前后水体的浊度降低，说明气泡帘系统在疏engineering工程中是可行的。水槽中气泡的数量，大小范围和中值与通风压力和管道结构有关。在不同高度的气泡羽流的半宽中存在三种不同的现象。根据一般线性模型，可以得出结论，气泡羽流的融合高度对气泡管孔间距的变化最敏感，并且气泡羽流的迁移特性受气泡处的空气流影响最大。孔。