Generation and accumulation of sulphide dust in underground mining causes risk of accidents, up to mortality, which impairs mine performance. The Soviet school of occupational safety and health created a valid methodical framework for prevention of sulphide dust explosions, and the accident rate of sulphide dust explosion was minimized. However, the earlier technical, methodical and other solutions on occupational safety omitted the trend of depletion of mineral resources, as well as capacities of modern mining equipment and blasting facilities, and were inadaptable to the present-day working environment. Transition to large-diameter drilling and basting, application of cutter–loaders, sectional blasting in VCR raisers has resulted in generally increased dusting in mines, with higher fraction of finely dispersed dust particles. In sulphide ore mining, this conditions risk of exothermal processes and explosion hazard. The current changes in the mineral reserves and mineral resources in Russia lead to extraction of low-grade sulphide ore while their fire and explosion assessment is absent. At the present time, dust explosions take place in sulphide mines even in case of low sulfur content of ore. This article describes the assessment procedure of fire and explosion assessment of low-grade sulphide ore in underground mines. The procedure provides an integrated estimate of the mineral composition of ore and enclosing rocks, analysis of material constitution and grain size distribution of dust cloud, determination of spontaneous ignition temperature in dust samples, and examination of interaction between sulphide dust and explosive applied in mines. The developed procedure for studying basic factors of dust explosion safety is a part and parcel of the production safety as it predicts and estimates potential hazard sources during underground mining of low-grade sulphide ore.

For citation: Rylnikova M. V., Mitishova N. A. Research technique for explosion hazard of low-grade sulphide ore in underground mines. MIAB. Mining Inf. Anal. Bull. 2019;(9):41-51. [In Russ]. DOI: 10.25018/0236-1493-2019-09-0-41-51.


Sulphide dust, sulfur, sulphide ore deposit, low-grade sulphide ore, explosion hazard, spontaneous ignition, accident, procedure, factors, conditions, laboratory studies, production safety.

Issue number: 9
Year: 2019
ISBN: 0236-1493
UDK: 622.2 : 622.814
DOI: 10.25018/0236-1493-2019-09-0-41-51
Authors: Rylnikova M. V., Mitishova N. A.

About authors: M.V. Rylnikova, Dr. Sci. (Eng.), Professor, Head of Department, Chief Researcher, e-mail:, N.A. Mitishova, Graduate Student, Junior Researcher, e-mail:, Institute of Problems of Comprehensive Exploitation of Mineral Resources of Russian Academy of Sciences, 111020, Moscow, Russia. Corresponding author: M.V. Rylnikova, e-mail:


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