We investigate the capture process of dust flow through a vibrating wire, water fog, and a water film to address the problem of excessively high exhaust dust concentrations in mine exhaust shafts according to the theory of liquid-solid flow and capillary film formation. Functional expressions of the thickness and height of dust-trapping water film are derived by using Young-Laplace equations and Navier-Stokes equations, respectively. The theoretical relationship between the effective water film area and dedusting efficiency on a vibrating wire is obtained.The dedusting efficiency of a resonant chord grid is measured experimentally.The results show that wire spacing plays a decisive role in water film formation.The instantaneous effective water film area of the vibrating wire grid is proportional to the dedusting efficiency. When the diameter distance ratio of the resonance chord grid was 1.14 with the dedusting wind speed controlled at 3 m/s and a spray pressure of 0.7 MPa. The total dust control efficiency can reach > 92%.