Zobrazeno 1 - 10
of 1 212
pro vyhledávání: '"Guang-an Zhu"'
Autor:
Guang-an Zhu, Jin-peng Han
Publikováno v:
Geomechanics and Geophysics for Geo-Energy and Geo-Resources, Vol 9, Iss 1, Pp 1-22 (2023)
Abstract The drilling cuttings weight index fails to reflect coal’s stress conditions under water-rich environments, potentially undermining the drilling cutting method’s reliability for monitoring and early warning of rockburst risks. We integra
Externí odkaz:
https://doaj.org/article/ee32ac2130d943b6b41583271a447634
Publikováno v:
Lithosphere, Vol 2022, Iss Special 11 (2022)
AbstractAs coal mining depth is over 1000 m, an overstressed effect is commonly observed around working face which shows a higher stress than the ultimate strength of the coal mass. Aiming at the problem of dynamic disasters induced by overstress loa
Externí odkaz:
https://doaj.org/article/0df9dd449bbf47e2b1a562d47aadd8a5
Publikováno v:
Shock and Vibration, Vol 2021 (2021)
Based on SOS microseismic (MS) monitoring system of a certain mine, time-, frequency-, and energy-domain characteristics of MS signals are analyzed by comprehensively applying one-dimensional discrete Fourier transform (DFT) and one-dimensional discr
Externí odkaz:
https://doaj.org/article/544651d6bd724c37b4518d1d01d7f555
Publikováno v:
Shock and Vibration, Vol 2021 (2021)
An appropriate layout of the first-mining working face of protected seams is key to rockburst prevention in coal seams. By taking the first-mining working face in the 2-2# middle coal seam in Hulusu Coal Mine as the background, a mechanical model for
Externí odkaz:
https://doaj.org/article/d18d3a19ae9a4002a7e066972ba75d69
Publikováno v:
Advances in Civil Engineering, Vol 2021 (2021)
The stability and dynamic response of coal pillar is of great importance in underground coal mining. In this paper, a series of uniaxial compressive experiments were first carried out to investigate the mechanical properties of coal. Subsequently, a
Externí odkaz:
https://doaj.org/article/de833bd4bcf04bc7b8a51a6d97efc909
Publikováno v:
Shock and Vibration, Vol 2021 (2021)
Many field observations have shown that rock bursts occur frequently near the terminal mining line (TML) and dip coal pillar area in deep coalfaces. Taking the “7.26” rock burst in coalface 3302 in Xingcun Coal Mine as an example, the rock burst
Externí odkaz:
https://doaj.org/article/b9a06f078b48409e96c9f2ceafd630c3
Publikováno v:
Shock and Vibration, Vol 2016 (2016)
Fault slip burst is a serious dynamic hazard in coal mining. A static and dynamic analysis for fault slip was performed to assess the risk of rock burst. A numerical model FLAC3D was established to understand the stress state and mechanical responses
Externí odkaz:
https://doaj.org/article/f7c57d4d215745f59eb8ec4ead7c06b0
Publikováno v:
Defence Technology, Vol 18, Iss 7, Pp 1139-1147 (2022)
Nano-TATB was developed in microchannels by physical method and chemical method, respectively. The effects of total flow rate, number of microreactor plates, solvent/non-solvent ratio and temperature on the particle size of TATB in the physical metho
Externí odkaz:
https://doaj.org/article/b46cfcafb4e247309576159b2458c969
Autor:
Guang-Yu Zhu1,2 gyzhu_china@163.com, Wei-Dong Li2, Sha, Wei E. I.1, Hou-Xing Zhou2, Wei Hong2
Publikováno v:
Applied Computational Electromagnetics Society Journal. Sep2023, Vol. 38 Issue 9, p652-666. 15p.
Autor:
Guang-Li Zhu, Cheng Xu, Kai-bin Yang, Si-Qi Tang, Ling-Long Tang, Lei Chen, Wen-Fei Li, Yan-Ping Mao, Jun Ma
Publikováno v:
BMC Cancer, Vol 22, Iss 1, Pp 1-10 (2022)
Abstract Background Depression has been reported to be associated with some types of cancer in observational studies. However, the direction and magnitude of the causal relationships between depression and different types of cancer remain unclear. Me
Externí odkaz:
https://doaj.org/article/b32a75f1c3e840ac9556162407f6206e