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 …
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 …
The U.S. coal mining industry consumes a significant amount of energy, primarily diesel fuel and electricity. The continuous global increase in energy demand, high energy prices and environmental ...
Simulating computer modelling is required to develop measures for increasing the efficiency of the power supply system of operating coal mines as well as for designing new coal …
China is the world's largest coal producer and consumer (Niu, 2014).According to the statistics, China's coal production and consumption accounted for 50.4% and 54.3% of the world's total production and consumption in 2020, respectively (The International Energy Agency, 2020).So, it is very important to ensure the safe …
The intelligent transformation of coal mines is an inevitable choice to promote the green transformation of energy and to achieve safety and efficiency in the industry. Exploring the path of its efficient …
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 …
The article presents results of research of the energy efficiency of mining operations at coal mines, proposes a system of indicators for evaluating the efficiency …
China's coal mines face very complicated hydrogeological conditions and are affected by many complex water hazards. Based on the condition of the coal seams and an analysis of regional hydrogeological and geological conditions, China's coal-producing regions have been divided into six major hazard regions. This paper …
In coal-mine soils, the CRs of Cd were also lower than those of Ni and Cr, underscoring the importance of not overlooking the high CRs of Ni and Cr (Cao et al., 2015). Given the variance in the occurrence and health risks of PTEs, Cu, with its high frequency and CR, should be prioritized for control in both coal and metal mines.
The paper discusses some of the contributions Prof. Horst Wagner made during his professional career in South Africa and Austria to improve pillar mining operations in coal and hard rock mines.
However, state-owned coal mining enterprises also need to consider the value of the assets of the state-owned enterprises (the provincial group is a listed company with total assets of 8.387 ...
Mechanical cooling of the entire mining tunnel, widely used in deep coal mines, has a significant energy-intensive consumption, particularly for intelligent mining tunnels. Therefore, localized cooling would benefit the intelligent mining industry. Current studies on the temperature, relative humidity, and air velocity under localized cooling for …
DOI link for Multi-factor pattern recognition method of rockburst in coal mines. Multi-factor pattern recognition method of rockburst in coal mines ... in-situ stress distribution and energy accumulation, this paper establishes one geological dynamic evaluation index system. ... The research results have been applied to the prevention and ...
From capturing sunlight in vast expanses of open-pit mines, to optimising energy production through compressed air storage in underground mines, these innovations hold the key to unlocking a future …
Coal mining is carried out by both opencast and underground mining methods. As of 2016, there are 252 operational underground coal mines, which contribute 7% (64 million tonnes) of the total coal production (Indian Bureau of Mines, 2017). Board-and-pillar and longwall methods are the most commonly employed techniques for coal …
Coal mine methane (CMM) is an important component of greenhouse gas (GHG) control, clean energy, and coal mining safety. Because of the complicated geological conditions and non‐linear characteristics of CMM emissions, the Intergovernmental Panel on Climate Change (IPCC) calculation methodology of CMM …
Coal mining, especially opencast mining and the evacuation of coal, requires large tracts of land for extraction processes, industrial purposes such as thermal power plants and captive plants, as well as ancillary processes such as OB dumps, pipelines, railway lines, and public works.
Introduction. China is currently the world's largest coal producer and consumer, with coal consumption accounting for 60.4% of total energy consumption and coal resources accounting for 95% of total fossil …
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 …
1. Introduction. As China's economic development pattern shifts and the ongoing promotion of the "dual-carbon" goal, the economic development trend has put forward new requirements for the development and efficient utilization of coal (Xie et al., 2021).The issues of low productivity, excessive coal consumption in mines, and the depletion of …
The paper considers the problem of reducing greenhouse gas emissions in the process of coal mining during the coal mine methane utilization in power supply systems.
Coal mining adversely affects the eco-system as a whole. On the unstable earth, the un-resting mankind constantly uses a variety of resources for daily lives.
1. Introduction. Coal is a primary global fuel source and is crucial for the power industry, chemical metallurgy, and numerous other industries (Deng et al., 2024, McGlade and Ekins, 2015, Wei et al., 2020a).Its demand accounts for about 37% of the world's energy (Anand et al., 2023).It will continue to play a vital role in the global …
Various innovations and changes have occurred to underground coal mine power systems during the past ten years. Some of these are the use of higher utilization and distribution voltages and associated switchgear, the use of programmable logic controllers (PLC's) for control, monitoring, and diagnostic applications, improved protective relaying with built …
WEBPower-factor compensators suitable for mine power systems are discussed along with a novel implementation of an adaptive power factor controller. An economic analysis …
1. Introduction. In the process of coal mining, rock pressure causes movement and damage to the strata surrounding the coal face. The behavior of this pressure on the coal face has a direct impact on the mining working environment and changes the internal state of the rock mass, potentially harming the ground environment …
be flexibly set, and the coal mine SVG reactive power compen-sation device uses the constant power factor controlmode. 3.7.CoolingsystemoftheSVGunit The SVG device includes water cooling and ...
Conventional underground coal mining relies upon the use of continuous miners in order to extract coal reserves from underground coal seams. In combination with the continuous miners-shuttle cars ...
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 …
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 …
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, …
