Zobrazeno 1 - 10
of 61
pro vyhledávání: '"Cai-Ping Lu"'
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-14 (2022)
Abstract The slip and instability mechanisms of coal-rock parting-coal structures under uniaxial loading conditions were investigated using experiments and case verification. The slip and the corresponding precursors were described by monitoring the
Externí odkaz:
https://doaj.org/article/4aa50d3325294aecb72995a9d937c31f
Publikováno v:
Lithosphere, Vol 2022, Iss Special 11 (2022)
AbstractThe stress distribution characteristics, stress gradient evolution, and focal mechanism of microseism (MS) events during mining of working face 103_ (lower) 07 under an overlying residual coal pillar were investigated. Numerical simulations a
Externí odkaz:
https://doaj.org/article/a3bf9655295d4c62b080789487ab601e
Publikováno v:
Geofluids, Vol 2022 (2022)
This work uses a combination of simulations performed via numerical models and field observations studied the attenuation of deep-hole blasting stress waves and the evolution mechanism of cracks in a jointed rock mass. First, we conclude that the lar
Externí odkaz:
https://doaj.org/article/47f6a2433144463685ae99608bcf2089
Publikováno v:
Energy Science & Engineering, Vol 7, Iss 6, Pp 2703-2719 (2019)
Abstract The slip and instability mechanisms of coal‐rock parting‐coal structure (CRCS) under coupled dynamic and static loading were investigated using theoretical analysis and numerical simulations, and the fracture and instability processes we
Externí odkaz:
https://doaj.org/article/54152e39c1044283b2e8856258b6e1be
Publikováno v:
Applied Sciences, Vol 12, Iss 20, p 10350 (2022)
The mechanisms of dynamic disasters around underground roadways/tunnels were examined by adopting split Hopkinson pressure bar (SHPB) laboratory tests to reproduce the failure process of the surrounding rock subjected to incident stress waves. On the
Externí odkaz:
https://doaj.org/article/c25bef50a1d743669c341df1685b23f0
Publikováno v:
Materials, Vol 15, Iss 19, p 6510 (2022)
Taking coal under hydro-mechanical coupling as the research object, the discrete element software PFC3D (particle flow code) was used to analyze the relationships among the force, acoustic emission (AE), and energy during coal fracture. Based on the
Externí odkaz:
https://doaj.org/article/03ccc5e6c1304f06a8ef30d91655e724
Publikováno v:
Shock and Vibration, Vol 2021 (2021)
Irregular coal pillars are often reserved in the upper coal seam in multiseam mining due to the limitation of geological conditions and mining methods. Diffused and transmitted stress in the pillars will form the stress concentrated areas in the lowe
Externí odkaz:
https://doaj.org/article/cd34661198924bfa9ee74a6fe733b877
Publikováno v:
Shock and Vibration, Vol 2021 (2021)
Slip and instability of coal-rock parting-coal structure (CRCS) subjected to excavation disturbance can easily induce coal-rock dynamic phenomena in deep coal mines. In this paper, the failure characteristics and influencing factors of CRCS slip and
Externí odkaz:
https://doaj.org/article/f160204eda2c4d118fca1d9ce391d372
Publikováno v:
International Journal of Distributed Sensor Networks, Vol 15 (2019)
To reveal acoustic emission and electromagnetic emission effects during hard rock impact failure is a crucial issue for monitoring and warning rockburst risk induced by hard roof fracture and fall. The presented research focuses on acoustic emission
Externí odkaz:
https://doaj.org/article/58f1be7bffcd4f4ab77adabfab3e0638
Publikováno v:
Advances in Civil Engineering, Vol 2018 (2018)
Our experimental work was designed to explore the particle size effect of simulated fault gouge on slip characteristics by the conventional double-direct shear friction configuration combined with acoustic emission (AE). The following conclusions wer
Externí odkaz:
https://doaj.org/article/80c69e1d046242d9b85a2574f6836a15