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Wyszukujesz frazę "Wang, Zui" wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
Underground mine gas explosion accidents and prevention techniques – an overview
Autorzy:
Song, Wanting
Cheng, Jianwei
Wang, Wenhe
Qin, Yi
Wang, Zui
Borowski, Marek
Wang, Yue
Tukkaraja, Purushotham
Powiązania:
https://bibliotekanauki.pl/articles/1853866.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
kopalnia węgla
zabezpieczenie przeciwwybuchowe
bezpieczeństwo kopalni
coal mine explosion
explosion protection
control
overview
Opis:
Mine gas explosions present a serious safety threat in the worldwide coal mining industry. It has been considered the No.1 killer for underground coal mining workers. The formation of an explosive atmosphere involves various factors. Due to complicated stratified geology and the coal production process, geological conditions and coal production process reasons and particular working sections underground present a high risk of an explosion that would most likely cause casualties and property loss. In this study, the basic conditions, propagation law and hazards analysis of gas explosions are reviewed, followed by a review of the typical locations where an explosion would occur. Finally, current technologies used in the mining industry for preventing gas explosions and suppressing the associated dangers were studied. Preventive gas explosion technologies mainly include gas drainage, gas accumulation prevention and gas and fire source monitoring technologies. The technologies often used to control or mitigate gas explosion hazards are usually divided into active and passive, and the advantages and disadvantages of each method are discussed and compared. This paper aims to summarise the latest technologies for controlling and suppressing gas explosion and guides mining engineers to design risk mitigation strategies.
Źródło:
Archives of Mining Sciences; 2021, 66, 2; 297-312
0860-7001
Pojawia się w:
Archives of Mining Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Using high level roadway to control gas emission in a longwall mining face – numerical simulation study
Autorzy:
Ma, Yongzhen
Cheng, Jianwei
Zhang, Rui
Wang, Zui
Ran, Dezhi
Sheng, Shuping
Zhang, Jufeng
Si, Junhong
Yu, Zhaoyang
Powiązania:
https://bibliotekanauki.pl/articles/2203351.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
symulacja numeryczna
wentylacja górnicza
kopalnia węgla
high level roadway
gob
numerical simulation
u+hLR ventilation method
Opis:
With the increase of coal mining depth, the gas content in coal seams could also become larger and larger, which could suddenly cause an inrush of gas into the longwall mining face. It is very dangerous for miners’ safety in the underground. The U-shaped ventilation pattern of longwall mining face that underground coal mines currently use is not enough to deliver sufficient air quantities to dilute gases in mining faces, which could result in the gas concentration over the required celling limit by government laws. Thus, the mine must stop production. In this paper, the high level roadway (HLR) is designed and the U + HLR new ventilation pattern is proposed to control gas emission in a longwall mining face. Using computational fluid dynamics simulation (CFD) software, the flow field and gas transportation in the mine gob are studied. The optimized ventilation parameters are summarized. It is found that the best vertical distance of the HLR is 35 m over the coal seam and the horizontal distance is 25 m from the air return roadway. It is recommended that the negative suction pressure design of the high level roadway should be ranged from 9000 Pa to 10000 Pa. Based on the study outcomes, the gas emission could be well controlled in mining faces and avoid any gas disaster accidents.
Źródło:
Archives of Mining Sciences; 2022, 67, 4; 715--728
0860-7001
Pojawia się w:
Archives of Mining Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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