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Integral system research of prediction of mining subsidence
Published in Heping Xie, Yuehan Wang, Yaodong Jiang, Computer Applications in the Mineral Industries, 2020
Yuehan Wang, Kan Wu, Kazhong Deng
The prediction of mining subsidence in the mining district is one of the cores of mining subsidence science. It is important not only in the theoretical study of mining subsidence, but also in the practice of mining production. It can study the developing rules of rockmass movement impacted by miming and the surface movement with the changing of time and space quantificationally. The prediction results can usually be used to determine whether the buildings are impacted by miming or not and the impacted degree, to guild the buildings’ maintaining, reinforcing or rebuilding which were impacted by mining, to guild mining measurements underground, to judge the probability of miming under railways, to estimate the workload of railways’ maintaining, and to arrange the scheme of maintaining. According to the prediction results, the information of land subsidence in miming district can be hold fully. It includes the area of subsidence land, the depth of subsidence, and contributes to develop the reclaimation work and protect the environment, etc.
Ecological value compensation for eco-economic system in mining districts
Published in Wang Yuehan, Ge Shirong, Guo Guangli, Mining Science and Technology, 2004
Shouxiang Xie, Xiaoyi Chen, Yiyang Qian
Mining district. From the aspect of exact academic comprehension, there is still no accurate definition about “mining district” around the world at present. Lu Guorong (1997) regarded the mining district as the location of large and medium-sized mineral companies in China, including the producing operation section and the residence zone of local inhabitants and farmers. The mining district is a distinctive economic geography region which is formed owing to the succession of mining industry. Mining district is also a great important part in the socio-economic system. So its development is constrained by the cooperative system of the social division of labor and it participates in the whole socio-economic exchange and cooperation with the comparative advantage of mineral resources. The most remarkable characteristic of mining district is to give priority to the exploitation of resources, and its preponderant industry is mining industry. The mining district is an important part in the compound socioeconomic system, which is “inter-connecting with the society and inter-constraining with the environment”. It is not only influenced by its exterior market demand, but also affected by its interior factor of production and environment quality.
Phytomining of Valuable Metals/Metalloids from Mining Wastes, Tailings and Contaminated Soils
Published in Hossain Md Anawar, Vladimir Strezov, Abhilash, Sustainable and Economic Waste Management, 2019
Hossain Md Anawar, Md Zabed Hossain, I. Santa-Regina, Vladimir Strezov, Farjana Akter
Over the world, several cinnabar mining districts have been investigated concerning the consequent Hg pollution of surrounding ecosystem compartments. Among those gathering more attention, there are the Almadén and Mieres mining districts in Spain (García-Sánchez et al., 2009; Lorenzo, 2006; Millán et al., 2006), which are the largest and the eighth largest Hg mining districts in the world, respectively. Apart from these, in Spain there are other Hg mining areas extensively exploited, but their environmental consequences have not been investigated so far. This is the case of the Usagre mining district. The Sesbania drummondii plants were able to accumulate and tolerate Hg induced stress using an effective antioxidative defense mechanism (Israr et al., 2006).
Environment-Human Bioaccumulation of Lead Resulting from Artisanal Lead-Zinc Mining Activities in Ebonyi State, Southeastern Nigeria
Published in Soil and Sediment Contamination: An International Journal, 2023
Benedicta Ozobialu, Chukwuebuka Emeh, Ogbonnaya Igwe, Chukwudi Ebenezer Nwoko, Olufemi Victor Omonona, Ejike Agustine Okoye
The large chunk of rock which are excavated from the mine pits contains the lead ore that comprised mainly of lead sulfide that are occasionally associated with lead sulfates and carbonate (Obiora, Chukwu, and Davies 2016) and are further subjected to beneficiation processes. Beneficiation includes crushing, grinding, gravity concentration, and froth flotation to remove the gangues and produce concentrates of 50 to 60% lead. However, because of the absence of sintering/smelting plant within the mining district, Lead ores and concentrates are sold to buyers without further processing. Wastes generated from these mining processes are usually disposed into the environment without any form of pre-treatment or thorough consideration of its hazardous implication to the environment (Igwe, Adepehin, and Iwuanyanwu 2012; Omonona et al. 2019). Most importantly, artisanal miners operate without the use of PPE; hence exposing them to potential PTE toxicity.
Critical minerals for green energy transition: A United States perspective
Published in International Journal of Mining, Reclamation and Environment, 2022
David R. Hammond, Thomas F. Brady
Unlike many of the critical minerals, good potential to decrease import dependency and make significant contributions to global supply does exist in the U.S. The problem is again the obstacle of environmental and social opposition, just as described previously for the Thacker Pass lithium project. The largest new potential U.S. copper project is Resolution located in a historical mining district in Arizona. To date the Rio Tinto-BHP joint venture partners have spent over $2 billion on exploration, technical evaluation, and development over a nearly 20-year period. These outlays also involve extensive permitting and accommodating social opposition. Slow progress is being made on the multiple litigations placed as obstacles to ever binging this mine, which would be the largest copper operation in North America, into production, however strong opposition by social/environmental justice activists continues. It remains uncertain whether Resolution will ever be put into production. It is far from alone – also in Arizona is the Rosemont Project, now called Copper World owned by Hudbay Minerals. It would be a surface mine complex which faces intense opposition by environmental organisations who are determined that it never be built. Together these two new mines could produce almost a third of current U.S. primary copper demand. Opposition via permitting obstacles will continue to delay, if not stop, these major contributors to satisfying green energy metal demands.
Human health risk assessment of trace elements in shallow groundwater of the Linhuan coal-mining district, Northern Anhui Province, China
Published in Human and Ecological Risk Assessment: An International Journal, 2018
Huili Qiu, Herong Gui, Qixiang Song
The coalfields in this region are covered by the Quaternary loose layer that is between 100.50 and 771.70 m thick. There are four aquifers in the Cenozoic group in the study area (Gui et al.2015), which are, in order from top to bottom, the first, second, third, and fourth aquifers. The shallow groundwater in the Linhuan coal-mining district, studied in this article, derives from the first aquifer, which mainly comprises mudstone and siltstone and is, on average, 30.0 m thick. It is directly recharged by meteoric water and surface water, and can be used for drinking, irrigation, and industry. The shallow groundwater in the Linhuan coal-mining district is generally pumped from wells.