The status of coal mining industry in China has been introduced in this paper, mainly including status of coal mining industry in China's economy, coal resource, output and operating costs of coal ...
China's massive metals industry can only maintain its size using imported minerals, frequently from limited suppliers. As part of its Belt and Road Initiative, the country has actively invested in mining assets in Africa and Latin America, and is beginning to engage in overseas refining and downstream facilities.. Many countries have welcomed …
China has developed some specific methods of coal mining and experimental techniques under aquifers and surface water [2].Over the last 40 years, about 1000 long-wall faces were extracted under surface- and groundwater, liberating millions of tons of coal reserves without disastrous consequences.
Despite China's position as a global mining powerhouse, tens of thousands of small- and medium-sized mines (SM mines) within the country continue to pose potential safety hazards and environmental …
In 2022, the China Association for Science and Technology (CAST) released 10 major engineering and technological challenges, among which the …
China is the world's largest coal producer country. However, large-scale coal mining has led to severe environmental pollution issues such as surface subsidence and gangue piling up. The gangue …
Coal mine solid waste backfill is a coal mining method employed to safeguard subterranean and surface geological formations, as well as water resources, against impairment. It stands as a pivotal technical approach for realizing ecologically sustainable mining endeavors, aiming to address China's predicament of 'three down' …
In China, environmental pollution due to municipal solid waste (MSW) over-generation is one of the country's priority concerns. The increasing volume and complexity of the waste poses serious risks to the environment and public health. Currently, the annual growth of MSW generation is estimated to be approximately 8–10% and will increase to …
Journal of China University of Mining and Technology, 42(3), pp. 355–362. Google Scholar. ... Application of solid backfill mining techniques for coal mine under embankment dam. Mining Technology, 122(4), pp. 228–234. Google Scholar. Zhou YJ, Chen Y, Zhang JX and He Q. 2012. Control principle and technology of final …
Trans. Nonferrous Met. Soc. China 24(2014) 3302Ã3308 Subsidence prediction method based on equivalent mining height theory for solid backfilling mining Guang-li GUO 1,2, Xiao-jun ZHU 1,2, Jian-feng ZHA 1,2, Qiang WANG 1,2 1.
Published by Elsevier B.V. Selection and/or peer-review under responsibility of Basel Convention Coordinating Centre for Asia and the Pacific and National Center of Solid Waste Management, Ministry of Environmental Protection of China. Keywords: disposal method; solid waste; metal mine; comprehensive utilization; idea 1.
Yushenfu mining area is located in an ecological fragile area in western China, the coal seam of which is the Jurassic Yan'an Formation. The Jurassic Yan'an Formation contains five minable coal seams, the top layer of which is thick, covered by shallow overburden and located under aquifers. Therefore, the mining induced water …
Dexing City is a large mining city located in Jiangxi Province (24°29′14″ N to 30°04′41″ N; 113°34′36″ E to 118°28′58″ E), China (as shown in Fig. 1), whose proven reserves and developed minerals amount to more than 30 kinds, abounding in gold, silver, copper and other non-ferrous metals, including over 9 million tonnes of copper reserves …
Text mining technology refers to the use of computer technology to analyze a large amount of text data and to reveal valuable information from the analysis ... Public opinion about the source separation of municipal solid waste in Shanghai, China. Waste Manag. Res., 30 (12) (2012), pp. 1261-1271, 10.1177/0734242x12462277. View in …
Coal mine solid waste backfill is a coal mining method employed to safeguard subterranean and surface geological formations, as well as water resources, against impairment. It stands as a pivotal …
According to the Notice, urban mining in China refers to recycling resources from materials such as waste iron and steel, waste non-ferrous metals, waste rare metals, waste plastic and waste rubber. These materials are generated in industrialization and urbanization processes, and are contained in waste electro-mechanical equipment, …
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 materials, strata …
Mining Solid Tyre 56x26. underground mining solid tyre 56x26 1422x660mm Product Description size:56x26,1422x660mm pattern:TP302 tread depth:75mm speed:15km/h max.load:33000 High load, high wear resistance, low heat build-up, tear resistance and cutting resistance Company Information Other products
Pyrite solid wastes is one kind of the mine solid wastes with typical resource and environmental characteristics, which is discharged during the processes of chemical acid making and sulfur refining and contains many useful and harmful components.In China, the mass of pyrite solid wastes is very large and most of them is difficult to comprehensive …
The total area of damaged land is 1 459 300 ha, the area of subsidence land is 844 500 ha, and the land area occupied by solid waste tips is 1 306 700 ha. Coal …
Characterisation of coal-mine waste in solid backfill mining in China. H. Jiang Key Laboratory of Deep Coal Resource MiningMinistry of Education of China, Xuzhou221116, China;School of Mines, China University of Mining and Technology, Xuzhou221116, China Correspondence hqjiang2007@126,
In China, the main sources of soil heavy metal pollution are sewage irrigation, sludge application, and metal ore mining and smelting operations (Chen et al., 1999). A six-year soil pollution study conducted by the Chinese government found that the country's soil has been severely polluted by human activities in the industrial, mining, …
8) signified a fresh stage in the history of China's filling mining. In the 1960s and 1970s, ce-mented filling required high material gradation and was mainly based on coarse …
China's trade in mineral reserves is about twenty-five percent. China is found to be the country whose demand and supply of minerals significantly influence the world's minerals market (Christmann, 2018; Menzie et al., 2013; Olatunbosun et al., 2013). …
(china nonferrous Metals industry association, 2020, p. 14; national Bureau of Statistics of china, 2020b). in 2019, china invested about $14.4 billion1 in geologic exploration and …
According to our case study of a typical MSW landfill mining project in China (Baotian landfill), it was found that the average equivalent CO2 emissions and leachate generation from landfill mining were 162.78 kgCO2 ton-1 and 0.04 m3 ton-1, respectively, which were considerably lower than the 513.50 kgCO2 ton-1 and 1.13 m3 ton-1 if the …
Transporting gangues vertically from surface to underground is a new technology in solid backfill mining, which has been widely used in China. However, the dynamic impact induced by the falling gangues could be a threat to the underground equipment, bringing about serious problems such as abrasion, dynamic impact, air …
Therefore, mixing solid waste of mine with a certain amount of soil can provide conditions to support plant growth and effectively consume and utilize mine solid waste, which is important for improving the ecological environment of mines [60]. China has developed various techniques for mine ecological restoration, including the heap ground …
The critical metal traded for US$9,548 per tonne (US$4.33 per lb.) on Friday, up 12% from its position at the start of year, but down from its high of over US$11,000 per ton in May. Key factors ...
X. Zuo, "Solid intelligent filling method and engineering case analysis in coal mine," PhD thesis, China University of Mining; Technology, Xuzhou, Anhui, China, 2021. Google Scholar [11]
State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou 221116, China cumtb.edu. Search for more papers by this author ... (see Figure 1) is a coal mining method in which solid mining wastes such as gangues are broken and processed and then mixed with flyash, cementing materials, and water in ...
The environmental problem of solid waste has gradually become a worldwide issue. Out of the 2.01 billion tons of annual municipal solid waste generation worldwide, 33% remained uncollected, and the total amount was expected to grow to 3.40 billion tons by 2050 (Kaza et al., 2018).Solid waste result in problems on not only treatment and …
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The nonferrous metal smelting industry is an important sector for promoting world industrial development. Since the twenty-first century, China has become the largest producer of nonferrous metal products in the world, and its annual output accounts for approximately 40% of the world's total output (Liao et al. 2020).China's total output of …
