Results 1 to 10 of about 1,442,809 (311)

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

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

Mechanical Analysis of the Failure Characteristics of Stope Floor Induced by Mining and Confined Aquifer

Shock and Vibration, 2021
Mining above confined aquifer has become an important task for water inrush prevention in China. To study the failure characteristics of stope floor along the strike, a mechanical model under combined action of mining and confined aquifer was constructed,
Zhiguo Lu, Wenjun Ju, Xiwen Yin, Zhuoyue Sun, Fengda Zhang, Chujian Han   +5 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

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

The influence features of individual factors on EU countries’ energy markets

Вісник Харківського національного університету імені В.Н. Каразіна: Серія Міжнародні відносини, економіка, країнознавство, туризм, 2023
The energy consumption impact is an important factor in the development of countries' economies. The European region is energy-dependent due to a significant shortage of energy carriers and an energy crisis.
Vladyslav Honcharenko, Svitlana Kasyan, Anatolii Filin   +2 more
doaj   +1 more source

Destabilization of the hard coal microstructure by a weak electric field [PDF]

, 2018
This study aims to analyse physical and chemical changes in hard coal samples under the influence of low-intensity electric fields in comparison to the fragments of ejected coal, as well as the coal samples selected from the zones ...
Kamchatnyi, Oleksii, Molchanov, Oleksandr, Rudakov, Dmytro, Soboliev, Valerii   +3 more
core   +1 more source