RESEARCH TECHNIQUE FOR EXPLOSION HAZARD OF LOW-GRADE SULPHIDE ORE IN UNDERGROUND MINES

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.

Keywords

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: rylnikova@mail.ru, N.A. Mitishova, Graduate Student, Junior Researcher, e-mail: geo-science@mail.ru, Institute of Problems of Comprehensive Exploitation of Mineral Resources of Russian Academy of Sciences, 111020, Moscow, Russia. Corresponding author: M.V. Rylnikova, e-mail: rylnikova@mail.ru.

REFERENCES:

1.        Kaplunov D. R., Ryl'nikova M. V., Radchenko D. N. Implementing the concept of sustainable development of mountain territories — expansion basis of mineral resources sector of the Russian Federation. Ustoychivoe razvitie gornykh territoriy. 2015. Vol. 7, no 3, pp. 46—50. [In Russ].

 

2.        Kaplunov D. R., Radchenko D. N. Design philosophy and choice of technologies for sustainable development of underground mines. Gornyy zhurnal. 2017, no 11, pp. 52—59. DOI: 10.17580/gzh.2017.11.10. [In Russ].

 

3.        Ilimbetov A. F., Ryl'nikova M. V., Radchenko D. N., Milkin D. A. New solutions to the problem of integrated development of ore deposits. Vestnik MGTU im. G.I. Nosova. 2006, no 4 (16), pp. 8—13. [In Russ].

 

4.        Anferov B. A., Goosen E. V., Zakharov V. N. Sostoyanie i perspektivy razvitiya proektov gosudarstvenno-chastnogo partnerstva v kontekste kompleksnogo osvoeniya nedr [The state and prospects of development of public-private partnership projects in the context of the integrated development of mineral resources], Sibirskaya izdatel'skaya gruppa Moskva-Kemerovo, 2015, 331 p.

 

5.        Paramanov G. P. Preduprezhdenie vzryvov sul'fidnoy pyli na kolchedannykh rudnikakh [Prevention of sulphide dust explosions in a pyrite mine], Saint-Petersburg, SPGGI, 1999, 130 p.

 

6.        Ermolaev A. I., Teterev N. A. Analysis of research in the field of dust explosions and their prevention in underground mines. Izvestiya vuzov. Gornyy zhurnal. 2015, no 8, pp. 75—80. [In Russ].

 

7.        Gorinov S. A., Maslov I. Yu. Ignition of dust-air mixtures under the action of air shock waves in underground mining of massive sulfide ores. Gornyy informatsionno-analiticheskiy byulleten’. 2017. Special edition 33, pp. 13—22. [In Russ]. DOI: 10.25018/0236-1493-2017-12-33-13-22.

 

8.        Chernobai V. I., Moldovan D. V. Model of formation of dust and gases in the explosion chamber of the blasthole charge in sulphur-containing ore. Journal of Industrial Pollution Control. 2017. Vol. 33(1). Pp. 804—808.

 

9.        Zhang Q., Ma Q., Zhang В. Approach determining maximum rate of pressure rise for dust explosion. Journal of Loss Prevention in the Process Industries. 2014. Vol. 29 (1). Pp. 8—12. https://doi.org/10.1016/j.jlp.2013.12.002.

 

10.     Paul R. Amyotte Some myths and realities about dust explosions. Process Safety and Environmental Protection. 2014. Vol. 92, Issue 4. Pp. 292—299. https://doi.org/10.1016/j. psep.2014.02.013.

 

11.     Zhi Yuan, Nima Khakzad, Faisal Khan, Paul Amyotte Dust explosions. A threat to the process industries. Process Safety and Environmental Protection. 2015. Vol. 98. Pp. 57—71. https:// doi.org/10.1016/j.psep.2015.06.008.

 

12.     Chanturiya V. A., Trubetskoy K. N., Viktorov S. D., Bunin I. Zh. Nanochastitsy v protsessakh razrusheniya i vskrytiya geomaterialov [Nanoparticles in the processes of destruction and opening of geomaterials], Moscow, 2006, 216 p.

 

13.     Pupkov V. V., Maslov I. YU., Bachurin L. V. Evaluation of chemical compatibility of industrial explosives with the developed rocks. Bezopasnost' truda v promyshlennosti. 2004, no 4, pp. 37—40. [In Russ].

 

14.     Gorinov S. A., Maslov I. Yu. Physical and mathematical model of heating of sulfide-bearing inclusions in ammonium nitrate explosives. Gornyy informatsionno-analiticheskiy byulleten’. 2017. Special edition 12, pp. 3—12. [In Russ]. DOI: 10.25018/0236-1493-2017-12-33-3-12.

 

15.     Ryl'nikova M. V., Radchenko D. N., Mitishova N. A. Investigation of the conditions and mechanism of the explosion of dust-air mixtures in the mine workings in underground mining of pyrite deposits. Nauchnye osnovy bezopasnosti gornykh rabot. Materials of the all-Russian scientific-practical conference], Moscow, IPKON RAN, 2017, pp. 199—206. [In Russ].

Subscribe for our dispatch