INCREASING EFFICIENCY OF VENTILATION IN DEEP-LEVEL IRON ORE MINES

The article offers theoretical and practical research findings on temperatures, moisture content and flow velocity of air in deep mines of the Krivbass and Zaporozhsky Ore Mining and Metallurgy Plant, Ukraine. The physical and mathematical models to analyze efficiency of a direct-contact condenser and a spray air cooling laboratory-scale set-up are described. The experimental results on engineering data and aerodynamic parameters of double-end tangent hydraulic system for spray cooling Oasis and ejector Dispersoid, as well as industrial tests of microclimate and ventilation efficiency are presented. New technologies and equipment are developed and trialed in Krivbass mines in spray cooling of mine air using mine water with a view to decreasing initial air temperature by 8–10°С on average and to reduce moisture content to 60–70%. Efficiency of ventilation and sufficiency of fresh air supply in underground excavations is determined. Technical and economic indexes of normalization of microclimate in deep ore mines are given.

Keywords

Protection, labor safety, microclimate, efficiency, mine excavations, ventilation, deep mines.

Issue number: 8
Year: 2018
ISBN:
UDK: 622.418: 622.8
DOI: 10.25018/0236-1493-2018-8-0-108-122
Authors: Lapshin A. A., Lyashenko V. I.

About authors: Lapshin A.A., Doctor of Technical Sciences, Professor, Kryvyi Rih National University, 50000, Krivoy Rog, Ukraine, e-mail: alexandr.lapshin-ua@yandex.ru, Lyashenko V.I., Candidate of Technical Sciences, Senior Researcher, Head of Department, Ukrainian Scientific-research and Design-prospecting Institute of Industrial Technology, 52204, Zheltye Vody, Ukraine, e-mail: vi_lyashenko@mail.ru

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