Results 11 to 20 of about 1,643,449 (356)

Combustion mechanism and control approaches of underground coal fires: a review

open access: yesInternational Journal of Coal Science & Technology, 2023
With the large-scale mining of coal resources, the huge economic losses and environmental problems caused by underground coal fires have become increasingly prominent, and the research on the status quo and response strategies of underground coal fires ...
Yun-tao Liang   +4 more
semanticscholar   +1 more source

Study on Mechanism and Main Influencing Factors of Rockburst under Complex Conditions of Hard and Deep Overburden

open access: yesShock and Vibration, 2023
Xinzhuang Coal Mine is a typical kilometer-deep rockburst mine in the Ningzheng mining area of China Huaneng Group, which is still in the capital construction period.
Ma Xingen   +8 more
doaj   +1 more source

Study on the disaster caused by the linkage failure of the residual coal pillar and rock stratum during multiple coal seam mining: mechanism of progressive and dynamic failure

open access: yesInternational Journal of Coal Science & Technology, 2023
Multi-seam mining often leads to the retention of a significant number of coal pillars for purposes such as protection, safety, or water isolation. However, stress concentration beneath these residual coal pillars can significantly impact their strength ...
Yunliang Tan   +6 more
semanticscholar   +1 more source

Research and practice of intelligent coal mine technology systems in China

open access: yesInternational Journal of Coal Science & Technology, 2022
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 ...
Guofa Wang   +6 more
semanticscholar   +1 more source

LEGAL PROTECTION FOR FOREIGN INVESTMENT IN THE MINERAL AND COAL MINING SECTOR IN INDONESIA

open access: yesDialogia Iuridica, 2021
One of the indicators of Indonesia's economic development is investors. Investors are actors who have a role to empower and manage potential resources to serve as the country's economic strength.
Vania Shafira Yuniar
doaj   +1 more source

Fracture features of brittle coal under uniaxial and cyclic compression loads

open access: yesInternational Journal of Coal Science & Technology, 2023
Under the effects of complex geological and stress environments, burst hazards continue to be a major challenge for underground space utilization and deep resources exploration as its occurrence can lead to personnel causalities, equipment damage and ...
Shikang Song   +5 more
semanticscholar   +1 more source

Elimination mechanism of coal and gas outburst based on geo-dynamic system with stress–damage–seepage interactions

open access: yesInternational Journal of Coal Science & Technology, 2023
Coal and gas outburst is a complex dynamic disaster during coal underground mining. Revealing the disaster mechanism is of great significance for accurate prediction and prevention of coal and gas outburst. The geo-dynamic system of coal and gas outburst
Lin Xu   +6 more
semanticscholar   +1 more source

Electro-filter ash use in the underground coal mines [PDF]

open access: yesMining and Metallurgy Engineering Bor, 2017
Thermal power plants in the Republic of Serbia spend 35-40 million tons of coal annually, mostly lignite, with about 6 million tons of ash or slag as a by-product of electricity and heat production, deposited on the landfills. The Law on Waste Management
Todorović Vladimir   +3 more
doaj   +1 more source

Stability Analysis and Derived Control Measures for Rock Surrounding a Roadway in a Lower Coal Seam under Concentrated Stress of a Coal Pillar

open access: yesShock and Vibration, 2020
Numerical simulations have often been used in close-distance coal seam studies. However, numerical simulations can contain certain subjective and objective limitations, such as high randomness and excessively simplified models.
Zhuoyue Sun   +5 more
doaj   +1 more source

Maintaining the functionality of the coal settling basin at the underwater pit Kovin [PDF]

open access: yesMining and Metallurgy Engineering Bor, 2016
Underwater coal exploitation is carried out by the use of underwater excavator 'Kovin I'. The mined coal is transported through a pump system as a hydro mixture via the pipeline Ø900 mm to the facility for irrigation and classification of the mined coal.
Marijanac Simeun   +3 more
doaj   +1 more source

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