Experimental Study on Dust Control in Bolt-shotcrete Working Face

Aiming at the dust-producing characteristics of bolt-shotcrete working face in underground coal mine, a comprehensive dust-control technology combining eddy current dust-control, dustproof cover and wet dust-collector dust-removal is adopted. The dust removal technologies for the dust-producing area of the sprayer and the dust-producing area of sprayer itself was tested and studied respectively, and relevant technical parameters and structural parameters were optimized. Finally, the dust removal efficiency of the dust producing area and the dust producing area of the sprayer itself is tested by simulating the working condition of coal mine underground bolt-shotcrete working face. The results show that the dust removal efficiency in the dust-producing area of the sprayer and the dust-producing area of the sprayer itself can reach 98.4% and 98.1% respectively after adopting the comprehensive dust control technology.