Study on dust movement in belt transportation roadway and pneumatic spray dust control technology

doi:10.16265/j.cnki.issn 1003-3033.2021.11.013

Abstract

Abstract: In order to address the problem of excessive dust concentration in mine belt transportation roadway, a new type of energy-saving pneumatic spray dust reduction program was designed. Dust migration in the roadway under 3m/s ventilation condition was studied by using numerical simulation method, and process of dust spraying from guide chute to polluting the entire roadway as well as spatial distribution of dust velocity were simulated. Then, a comprehensive spray dust reduction program of “central inhibition, bilateral partition" was proposed for simultaneous control of guide chute and roadway. Finally, 6 new energy-saving pneumatic spray nozzles were installed at both sides of guide chute, and 4 fog screens, formed by the nozzles, were arranged in belt transportation roadway. The results show that the proposed design can effectively reduce amount of dust from guide chute, and it has a very obvious effect on dust collection and isolation. This solution effectively controls the dust within 20m of space on both sides of transshipment point, with a dust removal efficiency of 94.1%.

Key words: belt transportation roadway, dust migration, pneumatic spray, numerical simulation, guide chute

CLC Number:

X936

JING Deji, WEI Dening, MA Mingxing, ZHANG Tian, MENG Xiangxi, REN Shuaishuai. Study on dust movement in belt transportation roadway and pneumatic spray dust control technology[J]. China Safety Science Journal, 2021, 31(11): 93-99.

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