Solar energy is one of the most promising forms of renewable energy for solving the energy crisis and environmental problems. Dust deposition on photovoltaic mirrors has a serious negative impact on the photoelectric conversion efficiency of solar power stations. In this paper, the influence mechanism of the dynamic and static liquid bridge forces on particle deposition behaviors on solar photovoltaic mirrors is investigated. In addition, the expression and physical meaning of the particle critical separation velocity are proposed. The research results show that the static liquid bridge force can be the primary deposition force causing dust particles to adhere to photovoltaic mirrors. However, the dynamic liquid bridge force can act as a resistance force for the particle motion process and even make dust particles roll along and finally stay on the mirror. The contact force is the primary separation force that causes dust particles to flow away from the mirror. Whether dust particles adhere to the mirror depends on the relative size of the deposition and separating forces. The particle critical separation velocity describes the relative size of the collision-rebound effect and mirror adhesion effect and is expressed in Eq. (16). These research findings can provide theoretical guidance for mirror cleaning methods in the operation process of photovoltaic mirrors.

太阳能是解决能源危机和环境问题的最有前途的可再生能源之一。光伏镜上的灰尘沉积会对太阳能发电站的光电转换效率产生严重的负面影响。本文研究了动，静态液桥作用力对太阳光电镜上颗粒沉积行为的影响机理。此外，还提出了颗粒临界分离速度的表达式和物理意义。研究结果表明，静态的液桥力可能是导致粉尘颗粒粘附到光电镜的主要沉积力。然而，动态的液桥力可以作为粒子运动过程中的阻力，甚至使灰尘粒子滚动并最终停留在镜子上。接触力是主要的分离力，它导致灰尘颗粒从反射镜上流走。灰尘颗粒是否附着在反射镜上取决于沉积和分离力的相对大小。粒子临界分离速度描述了碰撞回弹效应和镜面粘附效应的相对大小，并用等式表示。（16）。这些研究成果可为光伏镜运行过程中的镜面清洁方法提供理论指导。灰尘颗粒是否附着在反射镜上取决于沉积和分离力的相对大小。粒子临界分离速度描述了碰撞回弹效应和镜面粘附效应的相对大小，并用等式表示。（16）。这些研究成果可为光伏镜运行过程中的镜面清洁方法提供理论指导。灰尘颗粒是否附着在反射镜上取决于沉积和分离力的相对大小。粒子临界分离速度描述了碰撞回弹效应和镜面粘附效应的相对大小，并用等式表示。（16）。这些研究成果可为光伏镜运行过程中的镜面清洁方法提供理论指导。