Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Dihao Ai"'
Publikováno v:
Energy Science & Engineering, Vol 8, Iss 5, Pp 1705-1715 (2020)
Abstract Gas distribution ahead of the coal tunnel is the key risk factor controlling coal and gas outburst. Based on an analysis of the influence of the stress state on the porosity of the coal seam, an improved quartet structure generation set (QSG
Externí odkaz:
https://doaj.org/article/16661773b7704c509bbe867a254dec64
Publikováno v:
IEEE Access, Vol 6, Pp 24452-24463 (2018)
Robust automatic pavement crack detection is critical to automated road condition evaluation. However, research on crack detection is still limited and pixel-level automatic crack detection remains a challenging problem, due to heterogeneous pixel in
Externí odkaz:
https://doaj.org/article/83cc2cf8ad76475380646bbb50a19e43
Publikováno v:
Shock and Vibration, Vol 2019 (2019)
An experiment designed to simulate coal during excavation was conducted. Microseismic signals of coal under vibration conditions during excavation and subsequent waiting time of the coal roadway at different excavation speeds were collected and analy
Externí odkaz:
https://doaj.org/article/eab3768653694db8aad1559a66ad3a10
Publikováno v:
Shock and Vibration, Vol 2019 (2019)
In order to accurately identify and quantitatively calculate the surface cracks of rock mass under SHPB impact loading, an automatic crack detection algorithm was proposed and evaluated by the experiment. In SHPB experiment, cracks on the rock surfac
Externí odkaz:
https://doaj.org/article/4bf39151621341d4a80b671b118c2c3d
Publikováno v:
Shock and Vibration, Vol 2019 (2019)
To investigate the fracture characterizations of rocks under high strain rate tensile failure, a series of dynamic Brazilian tests was conducted using Split Hopkinson pressure bar (SHPB), and a high-speed digital camera at a frame rate of 50,000 fram
Externí odkaz:
https://doaj.org/article/e4890ed783dc4561a7f947e866f11c3d
Autor:
Chengwu Li, Dihao Ai
Publikováno v:
PLoS ONE, Vol 12, Iss 10, p e0185750 (2017)
In the coal mining process, the destabilization of loaded coal mass is a prerequisite for coal and rock dynamic disaster, and surface cracks of the coal and rock mass are important indicators, reflecting the current state of the coal body. The detect
Externí odkaz:
https://doaj.org/article/52b1bbfed6f24ea8b56bd06ef6b57df0
Publikováno v:
IEEE Transactions on Intelligent Transportation Systems. 23:152-164
Transport mode identification (TMI), which infers the travel modes of user trajectories, is essential to facilitate an understanding of urban mobility patterns and passengers' choice behaviors with the goal of improving urban transportation systems.
Publikováno v:
Energy Science & Engineering, Vol 8, Iss 5, Pp 1705-1715 (2020)
Gas distribution ahead of the coal tunnel is the key risk factor controlling coal and gas outburst. Based on an analysis of the influence of the stress state on the porosity of the coal seam, an improved quartet structure generation set (QSGS) random
Publikováno v:
Journal of Environmental and Engineering Geophysics. 25:139-152
The detection of electromagnetic radiation (EMR) during the fracture of solid materials such as rocks and coal has been widely used in seismic exploration and mine dynamic disaster prediction. As described in this paper, we conduct uniaxial compressi