Zobrazeno 1 - 10
of 50
pro vyhledávání: '"Jiazhuo Li"'
Publikováno v:
Geomatics, Natural Hazards & Risk, Vol 15, Iss 1 (2024)
AbstractExtra-thick key strata (ETKS) are a key factor causing coal bursts. In this study, field monitoring, physical and numerical modelling, and theoretical analysis were comprehensively adopted to investigate the effect of ETKS on the static and d
Externí odkaz:
https://doaj.org/article/8861a92ef90e417cad6c21389f1973a5
Publikováno v:
Applied Sciences, Vol 14, Iss 17, p 7737 (2024)
Determining the advanced mining influence range of an underground working face is crucial for preventing dynamic disasters, such as coal bursts and gas outbursts. In this study, the occurrence of advanced seismicity before the working face as well as
Externí odkaz:
https://doaj.org/article/7d1691f0d0bb4e97ae883b721b9c8008
Publikováno v:
Meitan xuebao, Vol 48, Iss 5, Pp 1894-1918 (2023)
With an increasing mining depth and intensity in Chinese coal mines, unprecedented frequency and intensity of mining tremors are attracting extensive attention from the government and society. Under the initiatives from the government and the intensi
Externí odkaz:
https://doaj.org/article/f301ca6903a04d71b28c0779e1894dd2
Publikováno v:
Geomatics, Natural Hazards & Risk, Vol 14, Iss 1 (2023)
AbstractIn multi-hole blasting, the design of the initiation pattern is critical for the blasting effectiveness, but its effects on rock damage and blasting seismic are still unclear. This research focused on investigating the effect of initiation pa
Externí odkaz:
https://doaj.org/article/9ac5ef6d62d747d992cc252c929578a9
Publikováno v:
Geomatics, Natural Hazards & Risk, Vol 13, Iss 1, Pp 2508-2534 (2022)
Rock burst is one of the challenging problems restricting the safe and high-efficiency mining of deep-buried coal seams, and roof deep-hole blasting (RDHB) is commonly practiced in highly burst-prone zones in coal mines to control rock bursts. This r
Externí odkaz:
https://doaj.org/article/2a8978f9d5e74c26b304ffd6ff71ebd8
Publikováno v:
Frontiers in Earth Science, Vol 10 (2023)
Coalburst is a violent dynamic failure of coal during underground mining. It is of significance to study failure pattern as well as energy evolution and transition during coalbursts and how they are influenced by pre-confinement. This paper presents
Externí odkaz:
https://doaj.org/article/9b105d8c6edd4dc68966de5500028181
Publikováno v:
Fractal and Fractional, Vol 7, Iss 7, p 550 (2023)
Aiming at the problem of the unclear rock burst generation mechanism and anti-impact measures of a large roadway through a coal seam in a deep panel area, taking the rock burst of a large roadway in the first panel area of Gaojiapu Coal Mine as the e
Externí odkaz:
https://doaj.org/article/b6873826604343fda36308964606108c
Publikováno v:
Frontiers in Earth Science, Vol 10 (2022)
Coal burst disaster is easily triggered by mining-induced fault unloading instability involving underground engineering. The high-static stress environment caused by complex geological structures increases the difficulty in predicting and alleviating
Externí odkaz:
https://doaj.org/article/0bf55668070e46ebb16ba34c4185f3d6
Publikováno v:
Minerals, Vol 13, Iss 4, p 570 (2023)
With a gradual increase in coal mining depth, the underground geological situation is more complex and the threat of rock bursts is more prominent due to the cross influence of multiple factors, such as faults, thick hard roofs, coal pillars, and hig
Externí odkaz:
https://doaj.org/article/ba9f635b3e0142dfbc94bc9c5bf13406
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-12 (2021)
Photodynamic inactivation is a common antibacterial method but often fails in extremely acidic environments (pH< 4). Here, the authors demonstrate halogenation of fluorescein for the development of a photodynamic agent which works in extremely acidic
Externí odkaz:
https://doaj.org/article/6fc4bd95f41d4d4db8c3d2ccd0267407