英国物理学会
期刊
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图书
作者:Chengwu Li , Xiaoyuan Sun ...
来源:[J].Journal of Geophysics and Engineering, 2016, Vol.13 (6)IOP
摘要:To date, both micro-seismic (MS) and electromagnetic radiation (EMR) techniques are used as normal, daily safety monitoring tools for coal or rock dynamic disasters in China. In previous studies, these two non-destructive techniques are usually analyzed independently; few wo...
作者:Chengwu Li , Lihui Dong ...
来源:[J].Journal of Geophysics and Engineering, 2017, Vol.14 (3)IOP
摘要:The gas sorption effect is an important factor affecting the gas permeability of a coal seam, which has been proved in many previous experimental measurements and analytical permeability studies. However, the sorption capacity of coal is usually not static due to the complexity o...
作者:Chengwu Li , Dihao Ai ...
来源:[J].Journal of Geophysics and Engineering, 2017, Vol.14 (4)IOP
摘要:To study the characteristics of coal cracks produced in the vibration failure process, we set up a static load and static and dynamic combination load failure test simulation system, prepared with different particle size, formation pressure, and firmness coefficient coal samples....
作者:Chengwu Li , Honglai Xue ...
来源:[J].Journal of Geophysics and Engineering, 2018, Vol.15 (3)IOP
摘要:Stress has a significant influence on gas diffusion, which is a key factor for methane recovery in coal mines. In this study, a series of experiments were performed to investigate effect of stress on the gas diffusivity during desorption in tectonic coal. Additionally, the d...
作者:Chengwu Li , Shuai Fu ...
来源:[J].Journal of Geophysics and Engineering, 2018, Vol.15 (4)IOP
摘要:Low-frequency magnetic signals with the advantages of fewer interfering factors and longer propagation ranges are more useful for improving the accuracy of monitoring and early warning technology for coal or rock dynamic disasters. In this paper, the characteristics of low-freque...

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