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CH4 is the second-largest greenhouse gas and has a significant impact on global warming. China has the largest amount of anthropogenic coal mine methane (CMM) emissions in the world, with coal mining emissions (or gas emissions) accounting for 90% of total energy industry emissions. The results of CH4 emission inventories from previous …
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An evaluating system for scientific mining of China's coal resources. Resour Policy. 2017;53:317–27. ... Xing LF, Bian ZF, Miao XX. Green and sustainable mining: underground coal mine fully mechanized solid dense stowing-mining method. Sustain Basel. 2017;9:1418. Article Google Scholar Liu JP, Zhang YD, Yang HJ. Value of green …
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coal dust emission. During the open pit coal mining process, coal-bearing debris and the fragmented coal from the un-recovered TCS are poured into the waste-dump inside or outside the mining pits. The accumu-lated coal-bearing debris will be spontaneously com-busted after reaching certain temperature and other
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The mining techniques vary from totally labor-intensive coal loading to automated longwall production with the same type of equipment used in the U.S. In fact, …
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Guo and Wang, on the basis of previous studies, defined high-intensity mining as a high-yield and high-efficiency coal mining method of thick coal seam (more than 3.5 m) mining (top-coal caving mining or large mining height), large panel width (more than 200 m), fast face advance rate (more than 5 m a day), high output per single …
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Given the coal resources in China, underground mining is the main method of extraction, with open-pit mining accounting for less than 15% of coal production. Scientific research has enabled underground mining to shift from mechanized mining to automated and intelligent mining.
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The production and consumption of coal account for approximately 75% of China's carbon targets. Coal mining activities tend to have substantial environmental effects [[20], [21], [22]].These effects mainly include (1) the loss of carbon from greenhouse gas (GHG) leakage during the mining process, (2) the spontaneous combustion of carbon …
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Consulting the Chinese safety industry standard for the "predicting method of mine gas emission rate" (AQ 1018-2006), for single coal seam mining, the mining influence coefficient may vary from 1.3 to 1.6, wherein 1.3 shall be chosen when the direct roof and floor of the active coal seam is shale, while 1.6 corresponds to carbonaceous or ...
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Despite the hazards surrounding coal production, China has produced remarkable results in the past 10 years, although some limitations regarding methods adopted in the country exist compared with those used in the USA, Australia, etc. (Li and Huang 2010; Zhang et al. 2016a).Economic development and exponential population …
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China's coal mining destroys approximately 8 billion tons of groundwater yearly, and the utilization rate is only 25%. ... For the construction of a PHS plant by UWRs, safe and efficient mining methods should be studied due to the negative relationship between upper reservoir stability and lower coal seam mining. Coordination …
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Abstract. Coal is not only the main fossil fuel in China but also a pollution source. To evaluate the impact of coal production on the environment, a life cycle …
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Coal-mining technology in China. Shen Shihua. Add to Mendeley. https://doi/10.1016/0360-5442 (86)90050-2 Get rights and content. Abstract. Although …
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2.2. Method for Estimating CH 4 Emissions from Coal Mining in China. China is the largest coal producer in the world. Coal mines are widely distributed, with an annual output of more than 5 million tons in more than 20 provinces. However, the spatial distribution of coal production and methane emissions caused by coal mining is quite uneven.
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Due to the continuous development of underground mining methods, technical equipment, the Internet and intelligent technology, a new energy revolution will be of great significance in years to come. Meanwhile, the high-intensity mining (HIM) of thick coal seams has become an important development direction of China's underground …
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4 Mining Design Institute, China Coal Research Institute, Beijing 100013, China. 5 Beijing Tianma Intelligent Control T echnology Co., ... fully mechanized coal mining method has been dev eloped .
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More than 20 years of studies on green mining in China have witnessed theoretical and technological progress in water-protective mining, co-extraction of coal and gas, surface subsidence mitigation, mine waste reducing and recycling, mine dust control, etc. In this context, this Special Issue welcomes review articles, research articles, and ...
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The 121 mining method has been widely used in coal mining (Majdi et al., 2012; He, 2014; Islavath et al., 2016), but it has the following drawbacks: (i) Considerable roadway excavation is required.Approximately 13,000 km of roadways are excavated in China each year (He, 2017), with significant excavation cost.In addition, it is easy to …
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Materials and Methods develops a two-stage model that combines input- and output-oriented slack-based measures for green mining efficiency evaluation. It also outlines the two-stage evaluation indicator system of …
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2. Mining Groundwater Pollution. China has achieved rapid economic growth over 30 years, especially in the mining industry (both coal and metal mines) [16,17].While China is the world's third-largest coal producer, rapid industrialization and urban expansion have now caused considerable land-use intensification [18,19,20,21].Coal mining has …
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These methods have been widely applied for mine water utilization in coal mines in northern China 23,24,25,26, including water conservation mining in Shennan Mining Area, Shaanxi 27, underground ...
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More than half of China's coal reserves are in difficult coal seams, i.e. in extra thick seams, thin seams, steeply dipping seams, and multi-seams. Since the early 1950s …
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Taking coal mining as the research object, the greenhouse gas emission in underground mining in China is calculated by life cycle assessment method, and the …
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Coal is the basic resource underpinning energy generation in China, however, constant, large-scale mining of coal results in many problems such as ecological destruction of mining areas. As a result, backfilling of solid waste underground is proposed to control strata and surface subsidence and to protect the environment. At present, …
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Although coal has made a great contribution to China's economic and social development, the traditional mining methods of coal resources have caused many problems (Ahern and Hendryx 2012; Adibee et al. 2013; Bernhardt et al. 2012; Chen et al. 2014; Hussain et al. 2016; Kurth et al. 2015; Song and Wang. 2019), such as the …
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Coal is China's main source of energy, and its production causes a certain degree of air, water, and land resource pollution. Therefore, it is necessary to compare environmental pollution caused by different mining methods. When mining underground coal resources, different mining methods have different levels of environmental impacts. …
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WebSurface coal mining methods used in China have also been limited because the geological, topographical and coal occurrences conditions. 2. Recoverable coal deposits …
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The evolution of thick coal seams mining methods in China Qiao Jianyong1,2, Wang Zhiqiang*1, Zhao Jingli1 1China University of Mining and Technology (Beijing) Ding 1 Xueyuan Road, Haidian District, Beijing China, 100083 2Beijing University of Posts and Telecommunications 10 Xitucheng Road, Beijing, China, 100876 Abstract.The article is …
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top coal producer has been China. 2. ... The various methods of mining a coal seam can be classified under two headings, surface . mining and underground mining. 2 . 3. Methods of extraction
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The application of traditional dust reduction methods in surface mines is limited, particularly during winter due to long-term drought and a rainless environment. ... 1 State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou, 221116, China; School of Mines, China University of Mining and ...
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Today, almost a third of American coal mines use longwall mining. Outside the U.S., that number is even higher. In China, the world's largest coal producer, more than 85 percent of coal is exracted using the longwall method. Underground Mining: Room and Pillar In the room-and-pillar mining method, miners carve a "room" out of coal ...
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