Risk of arterial hypertension in workers employed at coal-mining enterprises: social and hygienic assessment

In the article, aerodynamic resistance of the stope face is studied in case of selective mining the coal seam. To carry out the research, the methodology of the computational experiment for evaluating the longwall face aerodynamic resistance influence on the efficiency of airing the stope face has been substantiated. The model of the stope face section, equipped with mining and backfilling mechanized complex based on the serial 1KD90 roof support has been developed in the 3D modeling software SolidWorks. The diagrams of the air stream velocity distribution, when it flows in the cross section of the longwall face working space with different positions of stoping equipment and the values of rock-cutting thickness of the seam bottom (rock ledge) have been obtained in the environment of computational module FlowSimulation. The pressure drop along the length of the aerodynamic model of the stope face section has been assessed. The dependences of the average velocity of the air stream flow on the value of rock-cutting thickness have been obtained. The obtained results can be used to improve and modernize the elements of mining and backfilling mechanized complex of machinery and equipment, as well as the technology for selective mining of thin and very thin coal seams in the Western Donbas.

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“…-differential equation of the flow continuity: According to the Safety Rules [6,8,15], velocity of air motion in a stope is limited:…”

Section: Numerical Modeling Approachmentioning

confidence: 99%

Studying aerodynamic resistance of a stope involving CAD packages modeling

Mukha¹,

Cheberiachko²,

Sotskov³

et al. 2019

E3S Web Conf.

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Analysis of the factors influencing the level of professional health and the biological age of miners during underground mining of coal seams

Cheberiachko¹,

Cheberiachko²,

Sotskov³

et al. 2018

Min. miner. depos.

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Setting of the work environment of workers at mining enterprises during thin coal seams extraction influence on the character and the rate of their aging by determination of the biological age and estimation of the occupational diseases development risk value.Methods. The hygienic estimation of the work environment and the occupational diseases development risk value have been determined according to known standard techniques. The approach developed at the Institute of Herontology of National Academy of Medical Sciences of Ukraine has been used for determination of the miners biological age. The aggregate dust load in the air of mining developments has been determined by "АЕRА" respirator. The following equipment has been used for estimation of the human functional state: "Nissei DS-1902" and "Omron M10-IT" tonometers, "Maniquick MQ-160" infrared contactless thermometer, "VМ-150" medical balance. Sampling in the miners breathing zone has been made by "АFА-20" analytical filters. The research results processing has been fulfilled by the method of statistical analysis.Findings. The exceeding of the maximum permissible rates of adverse factors for miners, such as dust, noise and vibration has been set. The work environment is featured by the constant uncomfortable position of miners bodies and the sufficient loading level. It is determined, that the maximum risk of occupational diseases development is connected with the dust and the static loading factors. The work in such conditions leads to rising of the miners aging rate. Thus, the aging rate is equal to 7 years while having 28.3 years of average age for less than 10 years of service length, and correspondingly 9 years for more than 10 years of service length. The exceeding of the biological age on the calendar age is 15 years in average after the shift.Originality. The character of interrelation between the complex of harmful factors, the occupational diseases development risk and the workers aging rates has been set in the conditions of thin coal seams extraction. Practical implications.It is necessary to change the working and recreation modes of miners and to guarantee the work for not more than 4 hours with obligatory breaks for rest, in order to enhance the life time of the miners occupied at coal-face works on the thin coal seams extraction.

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The prospects of occupational risk management during reforms of regulatory legislation basis

Алексеев

Зайцева

Шур

2019

Myditsina truda I promyshlennaya ekologiy

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Despite wide legislation basis of regulating relations in work safety and workers’ health, one third of workplaces demonstrate exceeded allowable normal levels of workers’ exposure to occupational hazards and present occupational risk for health disorders.In accordance to national legislation acts, evaluation should cover factors of occupational environment and working process, and occupational risk is understood in context of mandatory social insurance. This approach has been formed due to mostly compensatory trend in legal principles of work safety in Russia by now. Implementation of new preventive concept of work safety, based on idea of risk management for workers, necessitates development of legal acts that regulate requirements to evaluation of occupational risk and its reports with consideration of changes in Federal Law on 30 March 1999 №52 FZ “On sanitary epidemiologic well-being of population”.Those acts can include Sanitary Rules and Regulations “Evaluation of occupational risk for workers’ health”, that will contain main principles of risk assessment, requirements to risk assessment, including its characteristics which can serve as a basis of categorizing the risk levels with acceptability.To standardize requirements for informing a worker on the occupational risk, the expediency is specification of sanitary rules “Notifying a worker on occupational risk”. These rules should contain requirements: to a source of data on occupational risk level at workplace, to informational content and to ways of notifying the worker. Specification and implementation of the stated documents enable to fulfil legal requirements completely on work safety — that will provide preservation and increase of efficiency in using work resources.

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Risk of arterial hypertension in workers employed at coal-mining enterprises: social and hygienic assessment

Cited by 5 publications

References 1 publication

Studying aerodynamic resistance of a stope involving CAD packages modeling

Studying aerodynamic resistance of a stope involving CAD packages modeling

Analysis of the factors influencing the level of professional health and the biological age of miners during underground mining of coal seams

The prospects of occupational risk management during reforms of regulatory legislation basis

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