Song et al. reviewed the application status of five types of coal mine robots in China and abroad, including tunneling, coal mining, transportation, safety control and rescue, studied the application status …

Mining activities have introduced various heavy metals and metalloids to surrounding soil environments, causing adverse impacts to the ecological environment system. The extremely high concentration of various heavy metals and metalloids make the Xikuangshan (Hunan, China) an excellent model to assess their ecological risk.

Most mining-induced seismic activities happen at coalmines in China. The average mining depth in 1980 was about 288 m in coalmines. In 2000, it had increased to 500 m, an increase of 212 m in 20 years. Therefore, recent increase of mine seismicity is largely attributed to the increase of mining depth. By 2003, 83% and 76% of coals had …

For example, Cao et al. (2011) indicated that, on average, industrial activities, the residential sector, and the transportation sector contributed 68.6%, 20.4%, and 4.5% of the total PM2.5 emissions in China, respectively. Among the industrial sectors, the energy sector releases the largest quantities of PM2.5 pollutants, as many plants still ...

Zheng, Y, et al. Learning transportation modes from raw GPS data for geographic applications on the Web. In Proceedings of WWW 2008, (Beijing China, April 2008), ACM Press: 247--256. Digital Library

The SOC density of the sand mining areas (2.59 t ha-1, depth of 0-40 cm) was lower than that of the riparian forestlands (80.42 t ha-1). Compared with those of the riparian forestland, the sand mining area exhibited a dramatic reduction in the CO 2-fixed gene abundances (cbbL) and a significant change in the composition of cbbL-containing …

At present, over 70% of China's coal production is centralized in ecologically fragile regions in western China—a consequence of the depletion of shallow coal resources in the middle east (Fig. 1) [1].The structure of underground aquifers is directly damaged by the intensive mining, with the ratio of groundwater damage to coal mining being …

The overall coal production in 2018 was estimated to be approximately 13.5 million short tons. Met coal production accounted for 11 million tons or 82 percent of the state's coal production, while thermal coal made up the remaining 2.5 million tons or 18 percent of overall production. Coal has been mined commercially in Alabama since the 1850 ...

BEVs, for instance, have lower life-cycle GHG emissions than ICEVs in most European countries, as illustrated by Sacchi et al. 75. For the private transportation sector in China, transportation ...

In China, coal mine waste rock (CMWR) produced in coal mining and processing is the greatest source of industrial solid waste in terms of production, accumulation volume, and occupied area. There are about 4.5 billion tons of CMWR stockpiled into more than 1700 waste dumps which occupied 150 km 2 of land ( Bian et …

Material transportation is long and complex in mining. To illustrate, the ore extracted from a pit in Vale's Serra Sul mine site S11D in Serra dos Carajás, Brazil, may travel thousands of kilometers overhaul trucks, rail, conveyor belts, ships to eventually reach Baowu Group's steel plant in Wuhan central, China.

Methane emissions from coal mining are well studied and expected to reach approximately 784 Mt of CO 2-equivalent (CO 2 e) by 2030 1.However, since coal mining itself is being directly targeted in ...

China Transport. The transportation system in China has improved dramatically since 1949. Nowadays, China has a comprehensive transportation network of airports, trains, highways, subways, ports, and waterways. Among these, high-speed rail lines, highways, and many new subways have perhaps improved the daily lives of local …

The annual death toll dropped to less than 500, 300, 200, and 100 respec-tively, in 2011, 2013, 2015, and 2016. Compared with 2000 when the State Administration of Coal Mine Safety was just established, the number of tremendous accidents and deaths in coal mines decreased by 95.7% and 96.1%, respectively.

China Molybdenum Co., Ltd. China Molybdenum is a mineral mining and exploration company. It mines for molybdenum, tungsten, niobium, cobalt, copper, and more. In 2022, China Molybdenum Co., Ltd ...

According to projections from the Global Mineral Resources Research Center of the Chinese Academy of Geological Sciences, the global demand for SMs is expected to surge dramatically over the next decade or so [6].By 2025, the annual global demand for crude steel, copper, aluminum, lithium, and cobalt is projected to reach 2.07 billion t, …

2.1. Study area. Ordos is situated in Inner Mongolia Autonomous Region, China, at 37°18′∼40°17′ N, 106°27′∼111°27′ E, with a total land area of approximately 86,800 km 2 and a climate that is classified as temperate continental. The terrain is elevated in the west and low in the east, with an average elevation between 1,000 and 1,500 …

Bicer et al. pointed out that, when using hydropower, nuclear, biomass, and ... mining, transportation, raw material preparation, and ammonia synthesis. Mining refers to coal mining in R1 and R2 and natural gas exploitation in R3. ... China University of Mining and Technology – Beijing Campus, Beijing, 100083, China.

1. Introduction. The accelerated urbanization in China has greatly increased the demand for transportation, resulting in increasing emission problems in the transportation sector (Lin et al., 2019; Zhang et al., 2018; Zhang et al., 2019a).China has been recognized as the world's largest carbon emitter (He et al., 2022), as reported that …

Key Laboratory of Virtual Geographic Environment, Ministry of Education, Nanjing Normal University, Nanjing, China. Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, China. Correspondence. Guoan Tang, School of Geographic Science, Nanjing Normal …

A Larger open pit operations (ndida mine, copper porphyry deposit, Chile, 24°16'15 S, 69°4'14 W); B Formal/artisanal placer gold mining, Ankobra River, Ghana, where all mining sites are ...

China's production of rare earth minerals increased by an annual average of 40% between 1978 and 1989 ( Fig. 1) and has provided more than 90% of the world's supply since 2001 ( Su, 2009, Chen, 2011, Anonymous, 2012 ). As a result, China's rare earth reserve has been steadily decreasing from 75% in 1970 to 23% in 2011 ( Chen, …

China is one of the few countries among the major world economies that uses coal as its primary energy source; more specifically, it produced 3.68 billion tons of coal in 2013, which represents 45.5% of total coal production throughout the world for that year (IEA, 2014) and accounts for 71.64% and 67.5% of China's total primary energy …

Bai J H, Xiao R, Cui B S et al., 2011. Assessment of heavy metal pollution in wetland soils from the young and old reclaimed regions in the Pearl River Estuary, South China. Environmental Pollution, 159(3): 817–824. Article Google Scholar Bilgili A V, Cullu M A, van Es H et al., 2011. The use of hyperspectral visible and near infrared ...

This paper proposes an efficient and effective data-mining procedure that models the travel patterns of transit riders in Beijing, China. Transit riders' trip chains are identified based on the temporal and spatial characteristics of their smart card transaction data. The Density-based Spatial Clustering of Applications with Noise (DBSCAN ...

The backfill mining method is one of the common methods of mine mining worldwide, due to its capacity to maximize the recovery of mineral resources and protect the underground and the surface environment. Similar to the developing conditions of China's mining industry, China's backfill mining technology started late, and the level of its …

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 and …

With the support of comprehensive transportation system, in China, a new urban system or spatial pattern which contains one to three central cities, several peripheral cities and some new towns, has emerged. In the central city, it is necessary to improve the multi-level and multi-modal transfer and connection function for public transportation.

Alabama has 3,536 identified mines listed in The Diggings™. The most commonly listed primary commodities in Alabama mines are Iron, Aluminum, and Gold .At the time these mines were surveyed, 2,308 …

1. Introduction. At present, China is the largest carbon emitter in the world (Ortega-Ruiz et al., 2022).Moreover, in the carbon emissions of all industries in China, the transportation sector ranks third (International Energy Agency, 2019; Xu et al., 2022).Meanwhile, it is facing difficult challenges in cutting carbon emissions …