Reduction of respirable dust-induced impact on open pit mine personnel in large-scale blasting

Various genesis occupational diseases are the problem in mineral mining. The aeroinduced impact on personnel in an open pit mine, due to the increased dust content of air, leads to development of respiratory diseases. The main sources of dusting in open pit mining are drilling and blasting, rock excavation and haulage, and dumping. The heaviest impact is exerted on respiratory organs by respirable dust to 10 µm in size. Large-scale blasting leads to atomization of rocks and to a single-step emission of appreciable quantity of finest dust particles. Efficiency of dust combating in large-scale blasting depends on the local climate, physical and mechanical properties of rocks and blasting design. In the negative temperature seasons, dust suppression in large-scale blasting uses snow cover on a block subjected to blasting; in the positive temperature seasons, surfactants are added in hydraulic stemming of blast holes. This article describes the theoretical, in-situ and lab-scale research of the snow cover efficiency, and offers a substantiation of the selection procedure of hydraulic stemming composition using surface active substances for dust suppression in large-scale blasting.

Korshunov G. I., Karimov A. M., Magamedov G. S., Tyulkin S. A. Reduction of respirable dust-induced impact on open pit mine personnel in large-scale blasting. MIAB. Mining Inf. Anal. Bull. 2023;(7):132-144. [In Russ]. DOI: 10.25018/0236_1493_2023_7_0_132.

G.I. Korshunov¹, Dr. Sci. (Eng.), Professor, e-mail: korshunov_gi@pers.spmi.ru, ORCID ID: 0000-0003-2074-9695,
A.M. Karimov¹, Graduate Student, e-mail: arturkarimov762@gmail.com, ORCID ID: 0000-0002-1261-6414,
G.S. Magamedov², General Director, e-mail: aogku@yandex.ru,
S.A. Tyulkin², Head of Drilling and Blasting Section, e-mail: aogku@yandex.ru,
¹ Saint-Petersburg Mining University, 199106, Saint-Petersburg, Russia,
² JSC «Gavrilovo Quarry Management», 188870, Gavrilovo, Russia.

A.M. Karimov, e-mail: arturkarimov762@gmail.com.

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