Pneumoconiosis and quartz content of respirable dusts in the coal mines in Zonguldak, Turkey

Erol, İlknur; Aydın, Hamit; Didari, Vedat; Ural, Suphi

doi:10.1016/j.coal.2013.05.008

Cited by 40 publications

(20 citation statements)

References 24 publications

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“…Such as, humidity, coal rank, ash, volatile matter, Fixed-C, calorific value, hydrogen, oxygen, nitrogen, Sulphur and carbon percentage. Ash, volatile matter and fixed-carbon values of every seams are showed in Table 1 [6]. The dust concentrations are estimated using fuzzy method according to Table 1.…”

Section: Study Areamentioning

confidence: 99%

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A Simple Numerical Model for Studying Cloud Formation Process Inthe Tropics : Heated and Cooled Surface Experiments

Noisri

2020

Wseas Transactions on Systems

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The coal dust explosion is a serious problem in under ground coal mines. Especially, Turkish Hard Coal Enterprise (TTK) has high dust concentration levels. Many parameters (humidity, ash, volatile matter, Fixed-C, calorific value, toxic gas amounts et al.) effect to dust concentration. In this study, ash, volatile matter and Fixed-C parameters are evaluated by fuzzy fault tree analysis for dust concentration in the coal seams in Karadon, Kozlu, Armutçuk, Amasra and Üzülmez collieries of TTK. The fuzzy fault tree analysis (FFTA) assesses the risks to control measurement and support decision-making for personnel safety. The model can be decision of coal dust factors to remove before dust explosions occur. Results show that the volatile matter mainly effects than others to dust concentration level. Additionally, the Armutçuk colliery (the Büyük coal seam) has maximum dust level (6.36 mg/m3) and the Üzülmez colliery (the Taban Acılık coal seam) has minimum dust level (0.77 mg/m3).

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Section: Study Areamentioning

confidence: 99%

“…Sastry et al (2015) estimated dust concentration by USEPA models [5]. Erol et al (2013) investigated to dust levels and quartz contents by variance analysis in Turkish Hard Coal Enterprises (TTK) [6]. Jiang et al (2020) forecasted to the safety investment decision making in coal mining enterprises [7].…”

Section: Introductionmentioning

confidence: 99%

A Simple Numerical Model for Studying Cloud Formation Process Inthe Tropics : Heated and Cooled Surface Experiments

Noisri

2020

Wseas Transactions on Systems

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“…American scholar Wang 23 carried out gas–solid two-phase flow experiments and concluded that the velocity of dust movement in the boundary layer is greater than the gas velocity. Hodkinson 24 experimentally studied the mixing of respirable dust in the airflow in a fully mechanized mining face. Through an experiment of dust dispersion in the working space, the distribution curve was drawn based on the measured data.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of the Dust Production and Transportation Law of an Intermediate Mine Heap

Huang

Yang³

et al. 2021

ACS Omega

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In view of the current serious dust generation and environmental pollution that occur during the unloading process of an intermediate mine heap, in this study, the flow field and dust migration law for an intermediate mine heap were simulated numerically. Based on the mathematical model of the flow field and dust field, a numerical simulation was used to obtain the impact airflow and dust distribution law under different unloading conditions. The effects of different factors on the impact airflow and dust were studied. It could be concluded that the maximum impact wind velocity and dust concentration increased with an increase in the unloading flow. When the heap height is 23 m, the relationship between the maximum impact wind velocity and unloading volume was v = 0.05124(M p)0.62584 and the relationship between the dust concentration and mine unloading flow was c = 7.05613(M p)0.35002. The smaller the ore particle size, the larger the impact airflow and the greater the dust concentration. The relationship between the maximum impact wind velocity and the particle size was v = 1.54000(d)−0.23786. The relationship between the dust concentration and ore particle size was c = 30.45323(d)−0.54273. The greater the maximum impact wind speed, the more the dust generated. The existence of natural wind flow will initially accelerate the speed of dust diffusion and increase the dust concentration, but with the increase in natural wind flow, the diffusion effect will gradually reduce the dust concentration. An increase in the mine heap height will cause the impact wind’s speed and influence range to continuously decrease but will only have a small effect on the dust concentration.

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“…Mining operations, such as underground roadway blasting processes, tend to generate dust in both the respirable and non-respirable size range 2 . Respirable dust is a main factor which has led to coal workers’ pneumoconiosis 3 . PM 2.5 is classified as a respirable dust, and is known to have toxic effects on the cardiovascular system by directly entering into the human pulmonary alveolus 4 .…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Particulate Matter 2.5 Distribution in a Roadway

Feng

Liao

2018

Sci Rep

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Large amounts of dust particles pose serious hazards to the health and safety of China’s coal miners during roadway blasting processes. It is known that among these dust particles, Particulate Matter 2.5 (PM2.5) does the greatest amount of harm. In order to study the distributions of the PM2.5 in roadway blasting processes, a mathematical model of the gas-solid two-phase flow was established in this study, which was based on a Direct Simulation Monte Carlo Method (DSMC). Then, a multiphase flow program was developed. This study’s results indicated that following the blasting processes, fine dust particles gradually floated up and were suspended for long durations in the underground roadway space. The medium-sized dust particles slowly sink to the ground and were eventually expelled before settling to the floor of the roadway. The coarse particles were rapidly settled to the roadway floor. It was determined that the PM2.5 particles in the front end of the dust group could not be quickly diluted, and the concentrations were high until it is expelled from the roadway, whereas the PM2.5 dust particles in the back end of the underground roadway were found to be gradually diluted. Eventually, the PM2.5 concentrations exhibited an alternating thin to dense phase distribution. When compared with the Particulate Matter 5 (PM5), it was found that the PM2.5 was more difficult to discharge, and easily formed serious PM2.5 dust air pollution. This study’s results were determined to be conductive to the future control of PM2.5 in the underground roadway blasting processes.

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Pneumoconiosis and quartz content of respirable dusts in the coal mines in Zonguldak, Turkey

Cited by 40 publications

References 24 publications

A Simple Numerical Model for Studying Cloud Formation Process Inthe Tropics : Heated and Cooled Surface Experiments

A Simple Numerical Model for Studying Cloud Formation Process Inthe Tropics : Heated and Cooled Surface Experiments

Numerical Simulation of the Dust Production and Transportation Law of an Intermediate Mine Heap

Numerical Simulation of Particulate Matter 2.5 Distribution in a Roadway

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