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Abstract 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 geo-logical and mining factors influencing mining-related ground cracks in Shanxi, a detailed investigation was ...
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On 8 May 2022 and 12 April 2020, two large rock avalanches occurred in Zhijin County, China, in the villages of Baiyan and Baiwu, respectively. These long-runout rock avalanches had the same geological, hydrological, and topographical settings and similar triggering factors but different mobility, and this inspired a research interest in the failure …
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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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Section snippets Classification of underground coal mine types. Compared to other countries, China has more underground coal mines. Although the United States is the second largest producer of coal in the world, the number of underground coal mines in China is more than 10 times that of the United States [41], [42].
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The average mining capacity of coal mines in China is 1.05 Mt/a, with 1181 coal mines with an average capacity less than 0.3 Mt/a, accounting for 35% of the total coal mines but contributing only ...
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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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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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China is both the world's largest coal producer and coal consumer. The total output of coal exceeds 3 billion tons, accounting for 42 % of the global production (Wang et al. 2009) and contributes over 74 % to China's domestic energy consumption (Bian et al. 2010).Over 96 % of the coal output in China comes from the underground …
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Complete and accurate accounting of greenhouse gas (GHG) emissions from coal mines in China is a critical basis for identifying mitigation potential and making …
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China mines coal resources in regions (Shandong, Henan, Anhui, Hebei, and Jiangsu Province) where mining, water resources, ... 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. Thin seams 0.4–1.3 ...
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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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This study considered the role of coal as China's basic energy source and examines the development of the coal industry. We focused on the intelligent development of coal mines, and introduced the "Chinese mode" of intelligent mining in underground coal mines, which uses complete sets of technical equipment to propose classification …
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Even after the abandoned coal mines are closed, a large quantity of underground resources remains undeveloped and unutilized. According to the survey, coal mines that have been closed so far contain coal resources of up to 42 billion tons, while the natural gas resources are estimated to be nearly 500 billion m 3.Moreover, there also …
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China is rich in coal resources, which account for 69% of its own total energy consumption (Bian et al. 2010). Coal production in 2015 was 3.75 billion tonnes, approximately 50% of the
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In most of the underground coal mines in China the overcoring method is applied to measure in-situ stresses with hydraulic fracturing being used in very few mines. Due to the special working conditions in Chinese underground coal mines, such as methane problems and damp and narrow working spaces, stringent requirements are …
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After years of development, paste backfill technology has become an important part of China's green safety mine construction and coal green mining technology system in the new era. In this paper, the research status of paste backfill technology in China's coal mines is expounded from the aspects of paste backfill …
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The coal reserves of this mine are 1.3 billion tons; the average stripping ratio is about 1:5. UNDERGROUND MINING China's output of coal from underground mining amounted to about 700 million tons in 1983, the largest output in the world. Mining methods vary according to the geological structure of a particular coal seam.
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1. Introduction. Coal resources play a strategic role in long-term development in China; coal outputs achieved 3.87 billion tonnes in 2014, accounting for 49% of global gross production (The National Bureau of statistics of the people's Republic of China).More than 92% of the coal produced is from underground mining, which causes severe …
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1. Introduction. Coal and Coalbed Methane (CBM) are rich in resources and complex in geological conditions in Chinese underground coal mines. Exploration results show that CBM resources in China occurring within explored coal areas to a depth of 2000 m, are estimated at 36.8 × 10 12 m 3, over 60.7% of the proven CBM reserves occur at …
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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 urban, agricultural and ecological spaces caused by multiple separate plannings.
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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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As the main energy source in China, coal is the main driving force of China's economic development. As shown in Fig. 1, under the influence of relevant policies such as "Replacing coal with gas" and "Replacing coal with electricity", China's coal consumption and production began to decline gradually from 2013 to 2016.However, in …
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As one of the largest coal-rich provinces in China, Shanxi has extensive underground coal-mining operations. These operations have caused numerous ground …
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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 …
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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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As one of the dynamic disasters of coal mines, rockburst seriously affects underground safe coal mining. Based on the laboratory test, field test, and theoretical analysis, this study proposed the principle of the rock burst induced by the combination of dynamic and static stresses and divided such rock burst into three types, including …
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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 …
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The main underground space for UWRs in China is the caving zone formed by longwall mining. Compared with previous UWRs that utilized the tunnel as the main …
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Mining subsidence is a direct source of environmental geological disaster in coal mine. In eastern China, lots of land submerged into water or became polder land, because of underground mining and ...
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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 was used to provide the …
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