As one of the largest coal-rich provinces in China, Shanxi has extensive underground coal-mining operations. These operations have caused numerous ground cracks and substantial environmental damage. To study the main geological and mining factors influencing mining-related ground cracks in Shanxi, a detailed investigation was …
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Large scale underground mining of coal resources in China using longwall mining has resulted in ecological and environment problems, including surface subsidence that is considered serious due to competing interests of prime agricultural lands, food security, and regional economic development. The subsided lands must be rehabilitated soon after …
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China's coal mining destroys approximately 8 billion tons of groundwater yearly, and the utilization rate is only 25%. These lost water resources caused by mining activities in coalmines are equivalent to 60% of China's annual industrial and domestic water shortage (approximately 10 billion tons). ... Module composition of coal mine …
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It is owned by Shaanxi Coal and Chemical Industry Group and produced an estimated 41.34 mtpa of coal in 2023. Buy the profile here. 2. Heidaigou Mine. Located in Inner Mongolia, the Heidaigou Mine is owned by China Shenhua Energy. The surface mine produced an estimated 33.1 mtpa of coal in 2023. The mine will operate until 2030. Buy …
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Here, we presented a remote sensing and spatial gradient model to quantitatively evaluate grain production caused by underground coal mining in eastern China. The results show that more than 80103.15 ha of land has been impacted by coal mining subsidence by 2020, with 28417.86 ha (35.48%) directly turned into water or wetland, and 51685.29 ha ...
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China's total coal production in 2021 exceeded 4.13 billion tons, 52% of the world's total. Coal gangue, a solid waste of coal mining accounts for 15–20% of coal production, when directly discharged on …
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The Longhua coal mine is located in Yulin city, Shanxi province, China. The mine is a longwall operation which produces about 4 Mt/a.The target seam of economic interest is the No. 3 −1 seam. This seam is about 3 m thick and about 90–100 m below the ground surface.The seam lies about 30–40 m below the No. 2 −2 seam which was …
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The Bulianta Mine, owned by China Shenhua Energy, is an underground mine located in Inner Mongolia. The mine produced an estimated 29.718 MTPA of coal in 2020. The mine will operate until 2034. 5. Haerwusu Mine. Owned by China Shenhua Energy, the Haerwusu Mine is a surface mine located in Inner Mongolia.
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The CO 2 geological storage in Ordos Basin and coal mining activities occurring simultaneously at the same location is a highly challenging coupled thermo-hydro-mechano-chemical (THMC) problem. To address this problem, an in-house program named "AEEA Coupler" was developed by linking two commercial software packages, Simulia …
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There are around 20 different underground coal mining methods utilized in China. Most of them are longwall systems. Dr. Syd S. Peng has classified underground coal mining method in China depending upon the height of seam to be dealt, into the following six major types (Peng, 2010): 1.
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Coal fires can self-ignite, but mining operations, which expose underground coal to oxygen and produce coal dust, create a much greater risk and are responsible for an estimated 75% of coal fires. "Every country that is coal-producing has coal fires," says Anupma Prakash, a geologist at the University of Alaska who has …
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Coal is an essential raw material for the social development of coal-producing countries, especially in China. In the past, however, underground coal mining (UCM) has had a negative impact on ...
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Coal is an essential raw material for the social development of coal-producing countries, especially in China. In the past, however, underground coal mining (UCM) has had a negative impact on ...
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However, the mechanism of how land use changes resulting from underground coal mining affect ecosystem service remains unclear, especially in areas with high groundwater levels. To address this issue, we studied the spatiotemporal in land use change in Jining City from 2000 to 2020 and employed Markov-PIM (probability …
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Coal mining safety has been compromised with water inrushes from aquifers either overlying or underlying the coal seams. Detailed studies of the associated hydrogeological conditions in China have led to different approaches to mitigate the water inrush risks from these two types of aquifers—the 'three diagram method' for overlying …
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coal output in China comes from the underground coal mining (Hu et al. 1997), which plays significant roles in China's livelihood, industry and economy. Underground coal extraction inevitably causes ground subsidence, which severely disturbs the surface. This situation is even more apparent in East China, which is both the main coal and ...
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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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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. …
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This paper reviews the existing methods, principles, efficiency, and status of coal gangue backfilling in China, a solid waste of coal mining. It also analyzes the state-of-the-art technologies, …
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In 1963, the U.S. built the world's first abandoned coal mine underground gas storage by using the abandoned Leyden coal mine near Denver (240–260 m from the surface) with a gas storage capacity of 140 million m 3. ... Coal mining in most areas of China is mainly conducted underground, causing surface collapse and formation of …
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Large scale underground mining of coal resources in China using longwall mining has resulted in ecological and environment problems, including surface …
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Trans. Nonferrous Met. Soc. China 24(2014) 2627âˆ'2635 Soil properties in reclaimed farmland by filling subsidence basin due to underground coal mining with mineral wastes in China Wei CHENG, Zheng-fu BIAN, Ji-hong DONG, Shao-gang LEI College of Environment and Spatial Informatics, China University of Mining and …
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Shaanxi Coal Group's Caojiatan Coal Mine is one of the largest mines in China, with an approved capacity of 25 million tons per year and recently upgraded to become the world's first 5G-A (5 ...
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Underground coal mining in western China causes heavy land subsidence and alters the soil ecol. However, the effects of land subsidence on soil fertility are not currently known, and the key factors governing its impact remain unclear in sandy land. We investigated the effects of land subsidence induced by underground mining on the soil quality ...
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This study performs an in-depth analysis of the environmental impacts of underground coal mining in China. Some technical measures are proposed based on the LCA results to realise clean and efficient coal production and build a green and …
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2.1 Coal resource storage characteristics. Coal is the most abundant fossil energy source in the world, and about 80 countries in the world have coal resources (Zhang et al. 2021c).China is not only the largest coal producer in the world, but also the largest coal consumer and importer (Jia et al. 2021).However, the coal reserves suitable for …
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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. Coal mine intelligence is the core technical support …
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Tao et al. (2021) conducted a LCA of a typical coal mine in China, which identified the main impact categories of the mine and key processes contributing to the …
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Adopting 47 sets of in situ stress measurements taken at depths ranging from 417 to 1123 m in a coal mining district in central China by the overcoring method, we characterize the magnitude and orientation of the current stress field and its relationship to tectonism in this district to determine the controls on in situ stress in underground coal …
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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 assessment (LCA) was conducted on the mining process of a typical coal mine in China by using the SimaPro 9.0.0 software. The Ecoinvent v3 database w …
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