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Study of the structure of semi-coke using EPR and NMR spectroscopy methods [PDF]

E3S Web of Conferences, 2023
The work carried out comprehensive studies of a number of industrial semi-cokes using EPR and NMR methods. Apply of EPR spectroscopy, it was shown that in all the studied semi-cokes there are two types of radical structures, the first of which are low ...
Zakharov Nikita, Popova Anna, Sozinov Sergey, Ismagilov Zinfer   +3 more
doaj   +1 more source

Fuel consumption of the BelAz dump trucks on an example of the open pit "Turija" of the brown coal mine Banovići [PDF]

Mining and Metallurgy Engineering Bor, 2021
This work sets out the methodology and presents the calculation results of fuel consumption of the BelAz dump trucks at the Open Pit "Turija" of the Brown Coal Mine Banovići itd. based on monitoring data.
Jamaković Jasmin, Mašić Sunčica
doaj   +1 more source

Research on Three-Phase Saturation Distribution Based on Microfluidic Visualization Experiment: A Case Study of Ling Xin Mining Area

Geofluids, 2022
Flow characteristics and phase distribution of concentrated brine storage in mining area have been core factors linking to the leakage risk assessment and ecological evaluation.
Xiaolong Hu, Hui Huang, Xidong Song, Hao He, Xiaolong Li, Jun Gao, Guanghua Zhou, Shaoxue Wu, Guocai Kong, Xiangming Huang   +9 more
doaj   +1 more source

Study on the Migration Pattern of Concentrated Brine in Underground Concentrated Brine Storage Reservoir: A Case Study in Ling Xin Mining Area

Geofluids, 2022
The discharge of mine water from underground coal mines in arid areas is leading to extensive water loss and secondary pollution. To eliminate the water loss and environmental pollution, sealing the concentrated brine after the mine water treatment in ...
Xiaolong Hu, Xiaolong Li, Hui Huang, Xidong Song, Jun Gao, Shaoxue Wu, Guocai Kong, Zhiwei Duan   +7 more
doaj   +1 more source

Mechanical behaviors of coal measures and ground control technologies for China's deep coal mines – A review

Journal of Rock Mechanics and Geotechnical Engineering, 2023
This paper reviews the major achievements in terms of mechanical behaviors of coal measures, mining stress distribution characteristics and ground control in China's deep underground coal mining.
Hongpu Kang, Fuqiang Gao, Gang Xu, Huaiwei Ren   +3 more
doaj   +1 more source

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

Shock 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, Pan Jun, Zou Qinghai, Li Yongyuan, Feng Fan, Wang Huifeng, Ye Xiangping, Gong Yongchun, Mou Biao   +8 more
doaj   +1 more source

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

Dialogia 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

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

Mining 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, Dragosavljević Zlatko, Dramlić Dejan, Branković Boban   +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

Shock 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, Yongzheng Wu, Zhiguo Lu, Youliang Feng, Xiaowei Chu, Kang Yi   +5 more
doaj   +1 more source

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

Mining 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, Makar Nenad, Jovanović Branka, Stjepanović Pavle   +3 more
doaj   +1 more source