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HEAVY-DUTY DUST SUPPRESSION SYSTEM FOR LARGE-SCALE BLASTING IN OPEN PIT COAL MINING



The article discusses the use of water-and-gas jet unit RD-3M-500 mounted in the body of large-capacity dump truck BelAZ-7519 jointly with sprinkler BelAZ-76135 with a tank capacity of 119 m3 for the prompt suppression of gas-and-dust cloud after blasting in open pit mines. Prior to blasting, the dump trucks with the gas-and-dust suppression unit and the sprinklers are arranged along the boundary of the buffer zone on a leeward side with regard to the wind rose. At the moment when the cloud of dust and gas emerges from the open pit mine, the gas-and-dust suppression system is actuated and jet-sprays the cloud for some minutes. The anticipated efficiency of such system of gas and dust suppression is reduction in concentration of dust and toxic gases by 2 and 3–5 times, respectively.

: 1
2019
ISBN: 0236-1493
УДК: 622.236.4
DOI: 10.25018/0236-1493-2019-01-0-77-83
Authors: Teryekhin E. P., Bulgakov I. S.

Authors' Information:
Teryekhin E.P., Candidate of Technical Sciences, Senior Lecturer, e-mail: 451222@sf-misis.ru,
Bulgakov I.S., Candidate of Technical Sciences, Assistant Professor,
Stary Oskol Technological Institute named after A.A. Ugarov,
National University of Science and Technology «MISiS» branch, 309530, Stary Oskol, Russia.

Key words:
Gas-and-dust reduction, open pit mines, jet, water and gas jets.

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