Purpose. To reduce the risks of accidents and injuries on the basis of vocational selection of the stuff for work in the mining industry, as well as training and maintaining their skills of safe work. Methodology. To solve the problems considered in the article, the following were used: analysis of information from scientific and technical sources on the influence of psychophysiological factors on occupational injuries; correlation-regression analysis of statistical data on occupational injuries; experimental research on efficiency of miners work in laboratory and mine conditions at various physical activities. Findings. The article substantiates the role and necessity of conducting professional psychophysiological selection procedures for mining workers, monitoring their functional state. The methodology of professional psychophysiological selection procedures, innovative training and behavioral audit is proposed in order to increase the injury protection of workers. Innovative ways of training and maintaining the safe working skills of miners are explored. The role of modern gadgets with installed applications for assessing the severity of physical work in terms of heart rate is investigated. Originality. The novelty of this study is to substantiate a comprehensive approach to the preventive precautions against occupational injuries in the mining industry at the stages of personnel selection, training and further control of the consequences of production activities. Practical value. Principles are developed for selecting, training, and maintaining skills for the safe work of personnel for the mining industry.
The relationship of the fractional composition is revealed and its influence on the explosiveness of the air in coal mines is revealed. The aim of the work is to determine the fractional composition of the studied samples of coal grades “L” (long-flame), “F” (fat) and “A” (anthracite) and its effect on the physical and explosive properties. It has been established that coal dust has a fractional composition containing more than 55% of fractions less than 94 microns and during natural grinding (without discharge of static electricity) in fine fractions (less than 94 microns) there are large conglomerates of particles that disintegrate when exposed to air currents similar to the speed of air movement in mountainous areas. workings. Based on the results obtained, further stages of work on the study of the explosive properties of coal dust are determined. The data on the granulometric and optical types of analysis are presented.
This article presents some results on the selection of the necessary micro-hardness tester for the purposes of research. In accordance with the objectives, namely the scientifically based choice of a hardness meter for the purposes of fire-technical examination and evaluation of its capabilities, aimed primarily at the possibility of identifying the most high-temperature combustion zone in fires in transport. The selection of a device for measuring microhardness was carried out in accordance with current methods for measuring microhardness, first of all for determination of microhardness for products based on metals and their alloys, as well as materials found in vehicles. The paper describes the main types of hardness testers and their applications. On the basis of the analysis programmable electronic small-sized hardness tester TEMP-4 was chosen. This device met all the requirements on the decision of set tasks of research connected with express researches both laboratory and industrial conditions, and the field at the decision of tasks of fire-technical examination directly on a place of ignition of the transport unit. Experimental results of nondestructive express measuring of various metal samples are described. Metal fasteners and supporting constructions are chosen as samples for research. The thermal effect on the test specimens was carried out in a thermostat chamber allowing for an impact heating rate. The results, testifying about change of microhardness of metal products as a result of influence of a high-temperature field are received.
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