Research progress and prospect of wet dust control technology in fully mechanized excavation face

Abstract

The ventilation of fully mechanized roadway in coal mine is easy to cause the rapid diffusion of dust, which makes it more difficult to control dust pollution. In order to improve the working environment of fully mechanized coal mining face, the progress of wet dust control technology such as spray and wet dust collector in fully mechanized coal mining face treatment is summarized, and the development direction of research on dust control technology of fully mechanized coal mining face is expounded. The results show that the current spray dust suppression mainly studies the influence of different working parameters and external media on the atomization characteristics and dust suppression efficiency under the condition of no air flow disturbance; wet dust collector mainly studies the influence of power device and dust removal structure on the performance of air absorption, dust collection and dehydration. In the future, it is necessary to strengthen the test and research on the actual impact zone range of nozzles under the influence of air flow return in the fully mechanized roadway, and research and develop the nozzle that is less affected by return air wind resistant nozzles and effectively cover dust sources, develop airborne all-in-one wet dust collectors without nozzles and filters, complete frequency conversion control and linkage operation of wet dust collectors and roadheader, and realize intelligent integrated operation of spray wet dust collectors in fully mechanized mining faces.

Keywords

• fully mechanized excavation face
• dust control
• spray dust reduction
• wet dust remover
• progress outlook