A comparative study of dust control practices in Chinese and Australian longwall coal mines

Ji, Yinlin; Ren, Ting X; Wynne, Peter; Wan, Zhijun; Ma, Zhaoyang; Zhi-min, Wang

doi:10.1016/j.ijmst.2015.12.004

Cited by 77 publications

(27 citation statements)

References 19 publications

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“…The presence of hazards in underground mining is related to the ongoing exploitation activity and results from the disruption of the initial balance in the intact rock mass. One of such hazards that poses a significant threat to the life and health of mine workers is harmful dust [ 2 , 3 , 4 , 5 , 6 ]. It results from the widespread presence of coal and stone dust in mine headings (as a mixture of silica, aluminosilicates and other elements, including trace metals), which is generated in the mining and transportation of the excavated coal material [ 2 , 3 , 4 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

“…The issues related to the dust hazard appear in numerous publications [ 2 , 3 , 4 , 5 , 6 , 7 , 11 , 12 , 15 , 16 , 23 , 30 , 31 , 32 , 33 ], but they mainly concern the methods for measuring dust levels in mine headings [ 2 , 4 , 11 , 30 ], the analysis of average dust values occurring in underground mining or for the particular groups of working positions [ 31 , 32 , 33 ]. As a result, the publications mostly provide a general analysis of the dust content in all the mine headings, without account being taken of the type of these headings (longwall or dog headings) and the specificity of the particular working positions.…”

Section: Introductionmentioning

confidence: 99%

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Exposure to Harmful Dusts on Fully Powered Longwall Coal Mines in Poland

Brodny

Tutak

2018

IJERPH

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The mining production process is exposed to a series of different hazards. One of them is the accumulation of dust which can pose a serious threat to the life and health of mine workers. The analysis of dust hazard in hard coal mining should include two aspects. One is the risk of coal dust explosions, which poses a direct risk of injury or even loss of life, the second is the risk of harmful dust, associated with the possibility of negative health effects as a result of long-term exposure to dust in the worker’s body. The technologies currently applied in underground mining produce large amounts of coal and stone dust. Long-term exposure to dust and crystalline silica may cause chronic respiratory disease. The article presents the results of tests on the dust levels in the area of a fully-powered longwall. The tests were conducted for five longwalls from different hard coal mines. In each of them, the average values of inhalable and respirable dust as well as the percentage content of free silica in the dust were determined in ten selected working positions. Additionally, for the longwall with the highest dust concentration, the levels of dust were determined for the basic activities related to the phases of the technological cycle. The comparative analysis conducted and the results obtained demonstrate large variations in the dust levels in the different areas. The permissible values were significantly exceeded in a number of cases. This poses a great threat to the health of Polish miners. The results obtained indicate that it is necessary to undertake more effective measures in order to improve the working environment of the crew in hard coal mines.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Exposure to Harmful Dusts on Fully Powered Longwall Coal Mines in Poland

Brodny

Tutak

2018

IJERPH

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“…Previous studies have mostly taken a single perspective on coal dust control such as control technology and equipment, or the risk of coal dust or silica exposure [ 18 , 19 ], lacking the systemic considerations of coal workers’ lung diseases in various countries. This paper extends previous studies of coal workers’ lung diseases by comprehensively comparing the current statistics of coal workers’ lung diseases and the entire process of coal dust management and health assessment management within three major coal-producing countries.…”

Section: Introductionmentioning

confidence: 99%

Focusing on Coal Workers’ Lung Diseases: A Comparative Analysis of China, Australia, and the United States

Han

Chen

Harvey

et al. 2018

IJERPH

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China has high and increasing annual rates of occupational lung diseases such as pneumoconiosis and silicosis. In contrast, Australia and the United States of America (USA) have greatly lowered their annual rates of lung diseases since the 1970s. This paper systematically compared and analysed the multi-elements of coal dust management and health management in these three countries to provide a reference for China. Regarding coal dust management, this paper found that coal workers in China are more susceptible to lung diseases compared to workers in the USA and Australia, considering fundamental aspects such as mine type, coal rank, and geological conditions. In addition, the controllable aspects such as advanced mitigation, monitoring methods, and the personal protective equipment of coal dust were relatively inadequate in China compared to the USA and Australia. Health management in China was found to have multiple deficiencies in health examination, co-governance, and compensations for coal workers suffering from lung diseases and healthcare for retired coal workers. These deficiencies may be attributed to insufficient medical resources, the Chinese government-dominated governance, ineffective procedures for obtaining compensation, and the lack of effective and preventive healthcare programs for the retired coal workers. Based on the USA and Australia experience, some suggestions for improvement were proposed.

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“…Longwall mining is currently the predominant coal mining method in China, thanks to its high efficiency of coal production [1,2]. e recent advances in large-cuttingheight mining has launched a new era of longwall coal mining [3].…”

Section: Introductionmentioning

confidence: 99%

Shield-Roof Interaction in Longwall Panels: Insights from Field Data and Their Application to Ground Control

Cheng

Wan

2018

Advances in Civil Engineering

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The shield-roof interaction as mining proceeds in longwall panels remains unclear, hindering the further increase of longwall productivity. To uncover the mechanisms of shield-roof interaction, using our self-developed Status of Shield and Roof IntelliSense (SSRI) system, we investigated the effects of idle time, retreating rate, setting pressure, yielding, and shearer’s cutting, as well as neighboring shields’ advance on the spatial-temporal evolution of leg pressure and leg closure of shields. Our results show that the shield-roof interaction is not only dependent on the shield capacity, but also collectively determined by the time-related factors, the geological condition, the setting pressure, yielding characteristics, and mining method. Understanding the shield-roof interaction in longwall panels enables us to apply the SSRI system for ground control in longwall coal mines. Early warning of severe roof weighting can be achieved by establishing a warning model based on the decision tree algorithm. Apart from this, we can also assess the working condition of yield valve and diagnose fluid leakage of shield cylinder using the SSRI system. Finally, we propose the research prospects on shield-roof interaction in longwall panels to achieve a more reasonable determination of shield capacity, prediction of roof fall and coal wall spalling, and self-adaptive control of the shield.

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A comparative study of dust control practices in Chinese and Australian longwall coal mines

Cited by 77 publications

References 19 publications

Exposure to Harmful Dusts on Fully Powered Longwall Coal Mines in Poland

Exposure to Harmful Dusts on Fully Powered Longwall Coal Mines in Poland

Focusing on Coal Workers’ Lung Diseases: A Comparative Analysis of China, Australia, and the United States

Shield-Roof Interaction in Longwall Panels: Insights from Field Data and Their Application to Ground Control

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