Research on the dust-control technology of a double-wall attached-ring air curtain on an excavation face.

ABSTRACT: On the basis of the jet theory of airflow fields and the gas-solid two-phase flow theory, we studied the law of dust migration in a simulated dusting space. We used the control variable method and numerical simulation software to explore the airflow field and dust concentration distribution on the working surface of the dusting under different inlet wind speeds and different attached blades of the double-walled annular air curtain. We determined the speed of the inlet of the annular air curtain to be 30 m/s. When the angle of the attached blade was 30°, the dust concentration of the driver and other workers was controlled below 100 mg/m3, which produced the best dust control effect is the best. Using real data, we built a similar test platform to test the airflow field and dust concentrati

SUBMITTER: Yan J 

PROVIDER: S-EPMC10919721 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature