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Underground Coal Mining China
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The five largest coal mines in operation in China
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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Response and prediction of ecosystem service values to land …
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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Underground space utilization of coalmines in China: A …
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 …
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The world's longest burning fires: China's unseen story
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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Soil properties in reclaimed farmland by filling subsidence …
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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Structural model and capacity determination of underground …
The large-scale extraction of coal resources in the western mining areas of China has resulted in a significant loss of water resources, which is a challenge for coordinating resource extraction with ecological preservation in the mining areas. Although underground reservoir technology can effectively solve this problem, measuring the …
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Machine learning-based microseismic catalog and passive …
Fault grouting is important in preventing groundwater inrush into coal mines from aquifers underlying the coal seams. However, evaluating the effect of grouting in the coal mine is difficult and expensive; hence, the region is sparsely explored. Therefore, we propose a more economical and efficient method for investigating grouting in the coal …
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Five largest coal mines in China in 2020
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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Advances in coal mining technology and sustainable mining …
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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Effects of Underground Coal Mining on Soil …
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 …
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Underground Disposal of Coal Gangue Backfill in …
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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Effects of Underground Coal Mining on Soil Spatial Water …
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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Quantify the extensive crop damage and grain losses caused …
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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Research and practice of intelligent coal mine technology …
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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Water Resources Utilization and Protection in the Coal …
Protection of water resources in the processes of coal mining includes mainly three methods for achieving effective utilization of mine water: water conservation …
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The world's worst coal mining disasters
Laobaidong disaster is the most fatal coal mine disaster since the inception of People's Republic of China (PRC) in 1949. Mitsui Miike Coal Mine Disaster (1963) – Japan. The Mitsui Miike coal mine explosion occurred on 9 November 1963, at Mitsui Miike coal mine in Omuta, Fukuoka, Japan. As a result of the accident 458 miners were killed …
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Innovation for sustainable mining: Integrated planning of …
In China, ∼56% of energy and over 70% of electricity are produced by coal (Xie et al., 2019; Xu et al., 2017), with 85% of coal from underground coal mining (UCM) …
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Interaction analysis for CO2 geological storage and underground coal
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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Research on prediction method of coal mining surface
Coal seam mining causes fracture and movement of overlying strata in goaf, and endangers the safety of surface structures and underground pipelines. Based on the engineering geological conditions ...
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Current stress field and its relationship to tectonism in a coal mining
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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Comparison of Underground Coal Mining Methods Based on …
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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Concurrent mining and reclamation for underground coal …
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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Mechanical behaviors of coal measures and ground control …
Yima mining district is a typical burst-prone coal mining district in China. Coal bursts greatly threaten safe coal production. The 21220 longwall face in the Changcun coal mine has a depth more than 800 m. Coal bursts occurred frequently in this mine, as described in Section 4.1.4, leading to severe damage to roadways (Fig. 23). To solve …
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Mining a coal seam below a heating goaf with a force …
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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Water Resources Utilization and Protection in the Coal Mining …
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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Life cycle assessment of underground coal mining in China
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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Shaanxi Coal Group Caojiatan: The World's First 5G-A Smart Mine …
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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Utilization of resources in abandoned coal mines for carbon …
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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Spatio-temporal analysis of ground subsidence due to …
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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Application of seismic velocity tomography in underground coal …
The Yuejin coal mine, owned and operated by Yima Coal Group Company, is located in the west of Henan Province, China. Currently, mining activity at the Yuejin coal mine occurs in LW 25110 and LW 23070, as shown in Fig. 3. The panels are fairly deep at about 970 m and 760 m underground, respectively. The fully-mechanized top coal …
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Underground Disposal of Coal Gangue Backfill in …
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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Research and practice of intelligent coal mine technology systems in China
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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Review of the Backfill Materials in Chinese Underground Coal Mining
In China, backfill mining has been selected as an effective approach to realize the green mining of underground coal resources, where backfill materials are the major factor in the development of backfill mining. In order to provide a better reference for further research and development of backfill mining, the experience and research achievements are …
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Two long-runout rock avalanches in 2022 and 2020 in an …
The two rock avalanches occurred in the Zhijin–Nayong Coalfield (ZNC) which has numerous underground coal mine enterprises (CMEs). The ZNC is the …
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Optimal layout of underground coal mining with ground …
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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Concurrent mining and reclamation for underground coal mining
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 …