open pit coal mining china

The annual production of the Heidaigou open-pit coal mine reached 25 Mt/a in 2006 after capacity expansion and renovation, making it the largest open-pit coal mine in China . The secondary expansion and renovation project of Heidaigou Coal Mine began construction in June 2011, and the raw coal production capacity was increased to 34 Mt/a.

The Chenbaerhuqi coal field in Hulunbuir City, Inner Mongolia Autonomous Region of China, is where the Baorixile open-pit coal mine is situated (as shown in Fig. 2) 7,28.The mine's external ...

China's Inner Mongolia region ordered inspections at all of its open-pit mines on Friday, after at least six people were killed in a landslide at a coal mine, with 47 others still missing.

The state of iron in coal gangue minerals is an important factor in determining the potential for value-added utilization of this solid waste; this is especially true for the coal gangue coming from the Pingshuo open-pit mine in China. The objective of the present study was to characterize the petrological, mineralogical, and chemical states of Fe in …

2. Engineering Research Center of Mining Environment & Ecological Safety of Ministry of Education, Beijing 100083, China. Address: Dongxiaolou, Yard 10, Xiaoguandongli, Andingmenwai Street, Chaoyang District, Beijing Code: 100029. Tel: 010-62213826 E-mail: zgkyzzs@163 Fax: China Mining Magazine Co., Ltd. ICP13051254-1 ...

The results show that 87% of China's coal is mined by underground methods, with an average production capacity of 0.93 Mt/a per mine. Open pit mining accounts for 13%, with an average mine ...

The open pit mining industry is an important basic industry related to China's economic lifeline and energy security, China's open pit coal production has been maintaining good growth momentum.

The coal mining began in 1901. since the founding of the People's Republic of China in 1949, over 280 million tons of coal and 530 million tons of oil shale have been mined, …

Open-pit mining is a type of surface mining used to extract coal, gold, and other minerals. It creates immense water and air pollution, disfigures landscapes, and destroys habitats.

Spraying water is commonly used for dust suppression in open-pit mines (Peng et al. 2019).A more economical approach is to spray a mixture of a suitable dust suppressant and water (Wang et al. 2019).But some open-pit mines in environmentally vulnerable areas of Northwest China are extremely short of water (Zhou et al. 2016; Hu …

Ecological Reconstruction Research and Practice in the Large Open-Pit Coal Mine of the Loess Plateau, China January 2018 DOI: 10.1016/B978-0-12-812986-9.00018-X

The Wucaiwan open-pit coal mine area is located in Jimusar County in the eastern part of the Junggar Basin (44˚42'-44˚57' N, 89˚5'-89˚16' E), Xinjiang Province, the People's Republic of China ...

The Qinghai-Tibet Plateau (QTP) is the largest mid-to low latitude and high-altitude permafrost. Open-pit coal mining and other activities have caused serious damage to the alpine ecological environment and have accelerated the degradation of permafrost on the QTP. In this study, the influence of open-pit coal mining on the time series ground …

CNN — Search and rescue operations continued in northern China Thursday, after a collapsed coal mine left at least five dead and dozens trapped. Chinese state media reported that six were...

Wucaiwan open-pit coal mine is located in Jimusaer County, Xinjiang Province, Northwest of China (Fig. 1 A). The open-pit covers approximately 24 km 2 and …

As the province most abundant in mineral resources in China, Inner Mongolia has more than 200 open-pit coal mines. The coal mining activities seriously hinder the sustainable use of regional land …

The soil of three soil depths (0–10, 10–20, and 20–30 cm) from natural land and three waste dumps with primary succession ages of 5 (R5), 10 (R10), and 20 (R20) years in the Heidaigou open-pit coal mine of Northwest China, were analyzed to examine changes in the soil properties and to highlight relationships between these properties.

China is the largest coal producer and consumer in the world, accounting for 47.30% of the total global coal production in 2019 . Open-pit coal mining is the main mining method in the world, and the proportion of open-pit coal mining in several other major coal mining countries (USA, Russia, India, etc.) except China is basically above …

The open pit mining industry is an important basic industry related to China's economic lifeline and energy security, China's open pit coal production has …

Introduction. China is heavily dependent on coal, and the proportion of coal in the energy structure will be continuously high 1, 2, 3. The open-pit coal mining has …

Qiang Xu, Huiyan Lu, Hao Fu, Pengyu Guo, Jianjun Zhao & Congwei Yu. 447 Accesses. Explore all metrics. Abstract. On February 22, 2023, a devastating …

The West Pit, once the largest open-pit coal mine in Asia, served as an economic engine for Fushun City, northeastern China's Liaoning Province. It fueled China's heavy industries, beginning in 1914 and peaking in the early 1960s, with annual coal production reaching 18 million tons. However, prosperity came at a price.

The Antianbao open-pit coal mine, located in Shuozhou city, Shanxi Province (Fig. 2), is the largest and most modern coal production base in China (Bai et al., 2018b).The geographical coordinates of this open-pit coal mine are 112°19′-112°24′E and 39°30′-39°35′N, and the area is a typical ecologically fragile area of the Loess Plateau …

The Shendong coal base in China was selected as the study area consisting of 133 open-pit coal mines. Annual NDVI was generated using Landsat time-series data. The maps of vegetation destruction and restoration caused by surface mining during 1990–2021 were drawn with accuracies of 0.82 and 0.87, respectively.

Mining and industrial activities are the primary sources of soil pollution in the open-pit coal mine. The concentrations of PAHs in 11 sampling sites in the industrial district and 9 sampling sites with different land use types in Pingshuo open-pit coal mine, China, were measured to investigate the distributions of PAHs and possible sources in soil profiles …

The collapse of open-pit coal mine slopes is a kind of severe geological hazard that may cause resource waste, economic loss, and casualties. On 22 February …

Moreover, the safety factor of the open-pit mining is higher than that of the underground mining. Therefore, two thirds of the mines are mined by the open-pit mining mode. China is the world's largest coal producer and consumer. In 2015, the coal output in China is 3.75 billion tons, accounting for 47% of the world's total. However, most of ...

PDF | On Apr 23, 2019, Cai qing xiang and others published Open Pit Coal Mines | Find, read and cite all the research you need on ResearchGate. ... 2 Surface mining in China. 2.1 Output.

A large-scale end wall landslide occurred on August 7–20, 2020, in the Manglai open-pit coal mine, China. In this paper, the engineering geological survey, mechanical test, large-deformation ...

The results of the slope stability analysis obtained the value of the safety factor (SF) for cross-section A-Aˈ 1.56 at the low wall and 1.42 at the high wall. In cross-section C-Cˈ, the SF ...

The coal mine slopes in the Warukin formation consist mostly of sandstone and claystone. Moreover, those stones are part of sedimentary rocks. One of the factors that influence the instability of sedimentary rock slopes was the presence of the groundwater level because it can reduce the internal strength of the slope and increase …

Coal seam that is thinner than a certain value is defined as thin coal seams (TCS). It commonly occurs in China as it covers 84.2% of the mining area. This situation is even severe in China's large surface coal mines, in which TCS accounts for 10–50% of the total reserve. Most TCS cannot be feasibly mined due to the working conditions of …

The collapse of open-pit coal mine slopes is a kind of severe geological hazard that may cause resource waste, economic loss, and casualties. On 22 February 2023, a large-scale collapse occurred at the Xinjing Open-Pit Mine in Inner Mongolia, China, leading to the loss of 53 lives. Thus, monitoring of the slope stability is important …

Soil samples were collected from the waste dump reclaimed after 2, 5, 10, and 15 years in Shengli West No. 2 open pit coal mine in Inner Mongolia, China, and the surrounding natural grassland was set as a control at 0–10 cm and 10–20 cm. Soil pH, electrical conductivity (EC), soil organic matter (SOM), nutrient properties, bacterial, and ...

Rock slope deformation stability for Antaibao open pit coal mine under mining was analyzed using finite difference technique (FLAC 3D).Optimal excavated scheme with relatively steeper slope angle of 47° instead of 30° was successfully implemented at the west wall on the geological section 73200 of the mine area, where …

Open-pit coal mine landslides are a common hazard, and a major mine landslide disaster occurred on February 22, 2023, at the Xinjing mine in Alxa Left Banner, China. In this study, multi-source remote sensing techniques, combined with actual environmental conditions, were used to conduct a preliminary investigation of the pre …

The construction of the Pingshuo mining area was very important to China's coal industry base, where the Antaibao open-pit coal mine, Anjialing open-pit coal mine and East open-pit coal mine started operating in …