1. Introduction. Coal, which plays a dominant role in satisfying the energy needs in China, serves as the main energy supply of China (Andrews-Speed et al., 2003; Li et al., 2019a).Although coal industry makes considerable contribution to the Chinese economic development, its safety record is the worst in the world (Kong et al., 2018; …
قرأ أكثر
This manuscript details the process undertaken by researchers at the National Institute for Occupational Safety and Health (NIOSH) Office of Mine Safety and Health Research …
قرأ أكثر
System for Heat Hazard Control in Coal Mines ZHAI Xiaowei1,2, XU Yu1,2*, YU Zhijin 1,2 1. College of Safety Science and Engineering, Xi'an University of Science and Technology, Xi'an 710054 ...
قرأ أكثر
Coal has been in the news over the past few months. Not without reason. The recent power crisis in India has moved coal to the centre stage. India's energy sector depends heavily on coal as fuel for its thermal power plants. The ability of coal-based power plants to operate round-the-clock and provide base load capacity is central to meeting the …
قرأ أكثر
The identification of the dust characteristics in coal mine working faces is essential for preventing coal dust explosion and occupational diseases. In this paper, dust samples from the coal mines in southern Shanxi province and Henan province, central North China, were selected as the research objects. The results show that the dust contains primarily …
قرأ أكثر
Based on the results of multi-factor analysis, the best ventilation parameters for reducing coal dust pollution during coal energy mining are as follows: the distance between the compressed air duct and working face should be 5 m, the distance between the exhaust duct and working face should be 4 m, the compressed air rate of the …
قرأ أكثر
However, 60% of the total coal production in the world is from underground mines, whereas in India it constitutes only 6.74% in the financial year 2016-17. Thus, underground coal production in ...
قرأ أكثر
With the changing time now, continuous miners of different heights are available, which helps for optimum use of technology to mine out varying in situ height …
قرأ أكثر
Mining safety is recognized as one of the factors influencing the mining industry's long-term viability. Therefore, we did a bibliometric analysis to take stock of safety management in the coal mining industry. This study suggests a three-step strategy, comprising literature extraction and screening, bibliometric analysis, and discussion, to …
قرأ أكثر
Technical Paper. A research on dust suppression mechanism and application technology in mining and loading process of burnt rock open pit coal mines. …
قرأ أكثر
Surface mining techniques can be broadly cl assified into the following types: (1) contour strip mining, (2) area strip mining, (3) open-pit mining, and. (4) auger mining. 6.1 Contour strip mining ...
قرأ أكثر
In Chinese coal mining, high-intensity mine pressure in the roadway and working face has been the critical factor that endangers the average coal production [1,2,3,4].In the past 30 years, with the rapid development of computer science and sensor technology, the study of mine pressure in the coal mining process has become more …
قرأ أكثر
The gas content of the current global underground hard coal mix 1 thus is in the range between 13 and 18 m 3 /t for mining depths from 450 to 1120 m. For surface mines, the gas content of hard coal is 3–5 m 3 /t for depths from 50 to 200 m and 0.77 m 3 /t at the constant depth of 50 m for brown coal.. However, the gas content per ton of …
قرأ أكثر
China is home to the most complicated geological conditions for coal mining in the world. As such, China's coal mine water hazard types are based on: (1) the various geological and hydrogeological structures associated with coal seams throughout time and space; (2) the spatial relationship between major water-filling sources and the mining …
قرأ أكثر
One of the important issue involved in coal mining is coal dust, which can lead to a series of health problems (Yao et al., 2020).Nearly the whole mining processes is accompanied by coal dust generation (Shahan and Reed, 2019).Fig. 2 depicts the processes of coal dust generation during mining, showing that dust is generated during …
قرأ أكثر
The MINER Act of 2006 mandates wireless two-way communication systems in underground coal mines in the USA. In addition, in 2015, the Mine Safety and Health Administration (MSHA) issued a final rule that requires operators of underground coal mines to equip place-changing continuous mining machines (CMMs) with proximity …
قرأ أكثر
underground part of the coal mine, no personnel in the underground part of the mine and no emissions into the air. In the paper [4], the term "intelligent coal mining" was …
قرأ أكثر
Ventilation is critical in underground coal mining (UCM) for safety and productivity. Challenges include mitigating hazardous gases, preventing coal dust accumulation, and achieving a balance between extraction efficiency and environmental concerns. Optimization techniques address these challenges, aiming for enhanced …
قرأ أكثر
This paper summarised the typical pro-active ground control management system (PGCMS) implemented in various Australian underground coal mines. Australia produces approximately 100 million tonnes ...
قرأ أكثر
The production cycle of open-cast coal mines generally includes drilling, blasting, loading, hauling and coal preparation activities. Individual optimization of these activities does not mean that the whole system is optimized. This paper proposes a cost model considering all activities in mining cycle and system-wide approach to minimize …
قرأ أكثر
27th International Conference on Ground Control in Mining 297 Figure 6. Automated Rotary Coal Cutting Simulator. Figure 5. A Typical Cutting Drum with Bits. 1. Kennametal Bit - A 2. Kennametal Bit ...
قرأ أكثر
In order to calculate the critical depth of a typical rockburst coal mine quantitatively, which is helpful in rockburst prevention and control, in this paper, the concept of typical rockburst coal ...
قرأ أكثر
To summarize the beneficial effects of the intelligent and efficient construction of coal mines in China under different paths, the fsQCA method is applied for the first …
قرأ أكثر
The paper presents the methane drainage efficiency for different systems used in Polish coal mines. Methane captured by drainage system is utilized in varying degrees. It is worth noting that this ...
قرأ أكثر
EF is the emission factor for abandoned underground mines, measured in million m 3 methane/mine. This paper calculates the methane emissions from the underground, surface, and abandoned coal mines in China and adds the results for each province to obtain the total emissions in 2020. ... CMM reduction from coal mines could …
قرأ أكثر
At present, the open-pit coal production of China ranks second in the world (Wang Citation 2014) and is developing toward a large-scale direction.It has been proven that large-scale open-pit coal fields are concentrated in Xinjiang, Inner Mongolia, and other ecologically vulnerable areas (Jiskani et al. Citation 2021).Green mining is the theme of …
قرأ أكثر
The continuous miner as used in coal mining is a machine capable of breaking, loading, and transferring coal from the seam being extracted on to a suitable transportation system in an almost ...
قرأ أكثر
1. .Introduction. China's energy structure is characterized by being rich in coal, but it is comparably much poorer in oil and gas, which gives coal the leading role in energy consumption (Liu and Li, 2013, Shen et al., 2012).A total of 2.75 billion tons of coal was consumed in power, metallurgy, chemical industries and building materials, …
قرأ أكثر
iv) The 5-yearly average fatalities have reduced from 196 to 66 in the said period (i.e 66%). The 5 yearly average fatality rate per MT of Coal produ-ction have reduced from 2.18 to 0.15 in the said period (i.e. 93%) The 5 yearly average serious injuries have reduced from 1278 to 233 (i.e 85%) in the said period.
قرأ أكثر
references. These give a wide-ranging insight into the causes and control of spontaneous combustion in coal mining and coal storage. In order to assist individuals who wish to obtain a deeper understanding of spontaneous combustion, the literature survey of Project 3.4.1 is reproduced at the end of this report as Appendix 5.
قرأ أكثر