china surface mining underground mining
Difference in Surface Damage between Deep and Shallow Mining …
The mining of underground coal resources often results in extensive damage to the ground surface, particularly in China, which has a large amount of coal resources. However, the laws of surface damage caused by the mining of deep and shallow underground coal resources are relatively different. This study analyzes the …
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Mining Method Selection and Optimization for Hanging-Wall
The Yanqianshan Iron Mine, China is switching to underground production, which needs to operate open pit and underground mining of hanging-wall ore-body simultaneously. ... Elmo D (2007) Transition from surface to underground mining: integrated mapping, monitoring and modeling data to better understand complex rock …
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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 for the high ...
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Frontiers | Comparison of Underground Coal Mining Methods …
Coal is China's main source of energy, and its production causes a certain degree of air, water, and land resource pollution. Therefore, it is necessary to compare environmental pollution caused by different mining methods. When mining underground coal resources, different mining methods have different levels of environmental impacts. …
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Innovation for sustainable mining: Integrated planning of underground
TR leads to "the former subsided land is not reclaimed, and the new subsidence land is increased", which intensifies the contradictions among collieries, governments, and framers (Xiao et al., 2017). Moreover, mining fissures in the ecologically fragile mining areas of western China have caused the leakage of surface water and …
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Main geological and mining factors affecting ground cracks
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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Examining the relationship between coal mining subsidence
Purpose The underground mining of coal leads to land subsidence and changes agricultural land into a water-logged area. This study aims to examine the relationship between coal mining subsidence and crop failure in plains with a high underground water table. Methods The Dongtan Coal Mine in Jining City of Shandong …
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Study of the Influence of Block Caving Underground Mining on the
However, in combined surface and underground mining, the breakthrough of an underground caving under an open pit may result in subsidence at the bottom of the pit. This can pose a serious threat for the stability of the pit and the safety of the mining. ... A Case Study from Yanqianshan Iron Mine, China. Adv Civ Eng 2019:1–26. Google …
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China Is Mining Bitcoin Underground: Report
Ben, a Chinese miner, told CNBC that he had gone underground, spreading his mining equipment across multiple locations to decrease the chances of being …
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Impact of Underground Coal Seam Mining on Stability and …
Limited by the buried depth of coal seam, open-pit mining is suitable for near-surface coal seams, but underground mining could meet the mining requirements of most coal mines [1,2].The Jurassic coalfield in northern Shaanxi is one of the largest coalfields in China [].The coalfield is located in the border zone between the Mu Us Desert and the …
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Continuous Detection of Surface-Mining Footprint in Copper Mine …
Socioeconomic development is often dependent on the production of mining resources, but both opencast and underground mining harm vegetation and the eco-environment. Under the requirements of the construction for ecological civilization in China, more attention has been paid to the reclamation of mines and mining management. …
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A review of UAV monitoring in mining areas: current status
Underground mining is the process of mining from ore bodies in underground deposits. It is usually carried out where the deposit is deep below the surface, and the mining processes are mainly directed at ore body development, cutting and stoping (Xiao et al. 2011). These mining processes all have some problems …
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Research on the surface movement in a mountain mining area
Landslides caused by underground mining are very common in mountain mining areas, and thus threaten human lives and assets. Under the superposed influence of underground mining and landslides, surface movement in mountain areas is different from that in flat areas. Further understanding of the law of surface movement in mountain …
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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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China: largest surface and underground mines | Statista
Located in the province of Shaanxi, the Northern Shaanxi Mine was the largest surface and underground mine in China (as well as in all of Asia-Pacific) as of …
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Surface Subsidence Monitoring Induced by …
Surface subsidence caused by coal mining has become an important factor that affects and restricts the sustainable development of mining districts. It is necessary to use appropriate methods for effective …
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Evaluation and future framework of green mine construction in China
The idea of green mining was proposed as a practical approach to make the mining industry more sustainable than before. Green mining is a contemporary mining model centered on the sustainability of resources, environment, and socio-economic benefits. Its purpose is to develop and apply technologies and processes that increase …
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Russia's Rusal to acquire $262m worth stake in China's HWNM
Credit: Russian Aluminium Association from Pixabay. Russian aluminium producer United Company Rusal International (Rusal) has agreed to acquire a 30% stake in Chinese alumina producer Hebei Wenfeng New Materials (HWNM) in a deal worth 1.91bn yuan ($261.6m). HWNM owns and operates an alumina refinery located in the Chinese …
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InSAR monitoring surface deformation induced by underground mining
The application of Sentinel-1 SAR data for land subsidence induced by underground mining operation is described, using a combined InSAR SBAS and IPTA approach. The results show the rapid surface deformation (up to 70 cm per year) caused by the underground mining activity. The cumulative subsidence time series for each coherent …
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Study on the Process and Mechanism of Slope Failure Induced by Mining
Mining under an open pit slope results in the collapse and slide of the slope. In this paper, a combination of methods including Google Earth and field investigations is applied to investigate the process of eastern slope failure induced by underground mining in the Yanqianshan Iron Mine over five years. According to the observed ground …
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Investigating deformation patterns of a mining-induced
However, in Fig. 8a, the surface subsidence of Jingu Mine is relatively slight because it was approved for mining again only in 2017, and the surface deformation induced by underground mining usually has a time lag (Liu 2021). Therefore, in the 2016-2018 InSAR monitoring, its subsidence does not seem to be as serious as other mined …
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Everything You Need To Know About Underground Mining
Underground mining, as the name would imply, is the technique of mining into and under the ground for commercial purposes, usually in the pursuit of valuable ores or minerals. In general, the technique is employed when surface mining, or rather 'strip' mining would be prohibitively expensive. For example, there are mines in South Africa ...
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Difference in Surface Damage between Deep and …
The mining of underground coal resources often results in extensive damage to the ground surface, particularly in China, which has a large amount of coal …
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Underground Mine Development | SpringerLink
In the thirteenth century BC, China used underground mining methods in Tonglu Mountain, Hubei Province (see mining and mineral processing techniques in ancient China). ... For the location of the wellhead and adit, ensuring that its buildings and structures are not harmed by surface collapse, landslide, debris flow, rock collapse, and avalanche ...
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Ten biggest producing surface and underground mines
Northern Shaanxi Mine in Shaanxi, China, was the largest surface and underground mine in Asia-Pacific, producing approximately 47.09 million metric tons per annum (mmtpa) of …
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Rules of overburden crack development in coal mining with
After coal seam mining, the overburden movement is transmitted to the surface to form cracks. As a main factor in the damage inflicted by mining subsidence on ground environments, ground cracks always threaten the safety of people's production and life. There are obvious differences in the laws of surface movement and deformation with …
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Frontiers | Ground Surface Deformation in the Hanging Wall of the
Impact of Ground Surface Subsidence Due to Underground Mining on Surface Infrastructure: The Case of the Anomaly No. 12 Sechahun, Iran. ... Chen C, Xia K, Zhang C, Wang Y and Liu X (2022) Ground Surface Deformation in the Hanging Wall of the Jinshandian Underground Iron Mine in China. Front. Earth Sci. 10:909466. doi: …
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An Optimized Combination of Mine Water Control, Treatment
This paper presents a case study of an optimized combination of mine water control, treatment, utilization and reinjection to achieve the zero discharge of mine water. Mine water has been considered a hazard and pollution source during underground mining, so most mining enterprises directly discharge mine water to the surface after …
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China: Five Largest Surface and Underground Mines in …
China: Five Largest Surface and Underground Mines in 2021. Share. Industry: Mining. Other Industry Indicators. Northern Shaanxi Mine in Shaanxi, was the largest surface and underground mine in China, producing approximately 47.09 million metric tons per …
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2023 Industry Outlook: Mining in China | An Underground Miner
Mines have been active in China for over 6,000 years, long before the dawn of the global industrial age. Chinese gold miners pioneered some of the earliest mineral processing technologies in 1096 C.E. when they realized they could crush gold-threaded rocks to extract the precious ore more easily.. With the rise of environmental protection …
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