Zobrazeno 1 - 10
of 2 963
pro vyhledávání: '"ZHANG Cun"'
Publikováno v:
矿业科学学报, Vol 9, Iss 4, Pp 608-618 (2024)
As the main bearing structure of the reservoir in the goaf of the mine, the damage instability mechanism under the influence of multi-field coupling of water immersion directly restricts the long-term safe and stable operation of the reservoir in the
Externí odkaz:
https://doaj.org/article/55f80581b1f942c5a35de4765b7c4334
Publikováno v:
矿业科学学报, Vol 9, Iss 3, Pp 413-425 (2024)
Coal is a porous material containing pore structures and mineral components, exhibiting pronounced anisotropy and size effects.In order to investigate the influence of coal anisotropy and size effects on its failure characteristics, this paper propos
Externí odkaz:
https://doaj.org/article/084c4dd91a1d415bb6f71e03ef61507f
Publikováno v:
矿业科学学报, Vol 8, Iss 4, Pp 464-473 (2023)
Research on the dissolution effect and the water purification mechanism of fractured coal and rock mass in the goaf area of underground reservoir is the key to realizing the safe and efficient operation of underground reservoir in mine.This paper tak
Externí odkaz:
https://doaj.org/article/eea1d78dbcd44a33b5d24ffed7b56490
Publikováno v:
矿业科学学报, Vol 8, Iss 3, Pp 398-408 (2023)
Coal seam mining causes deformation, fracture and migration of overlying rock, further leading to the surface subsidence and ecological damage, which are the main manifestations of mining damage.Quantitatively characterize mining damage is the key to
Externí odkaz:
https://doaj.org/article/0f4160f2ac384f81b8b0e793a88d73c1
Publikováno v:
Open Life Sciences, Vol 18, Iss 1, Pp 1449-55 (2023)
The age-related decline in T-cell function among elderly individuals remains unclear. We thus investigated the interrelationship between T-cell subsets and age to identify the changes in T-cell phenotypes and develop an age prediction model for the e
Externí odkaz:
https://doaj.org/article/e796befa96b34546a80e680d6ef14e80
Publikováno v:
矿业科学学报, Vol 7, Iss 3, Pp 333-343 (2022)
In order to obtain the fracture development characteristics of the working face with extra-large mining height under the condition of thick overburden and medium mining depth in mining areas in China's western regions, this paper adopted a comparativ
Externí odkaz:
https://doaj.org/article/e3cf849216cb4fc8b67b93b4bc84d0a6
Publikováno v:
矿业科学学报, Vol 6, Iss 4, Pp 472-479 (2021)
The height of overburden fissure zone is an important index to study the deformation and failure of overburden, but the existing single index can not reflect the fracture degree of surrounding rock in different space parts of stope. Based on 81505 wo
Externí odkaz:
https://doaj.org/article/6d60c721a9d24c9f8bd543fc7764ea5f
Autor:
Khamaru, Koulik, Zhang, Cun-Hui
In this paper, we discuss the asymptotic behavior of the Upper Confidence Bound (UCB) algorithm in the context of multiarmed bandit problems and discuss its implication in downstream inferential tasks. While inferential tasks become challenging when
Externí odkaz:
http://arxiv.org/abs/2408.04595
Two-color laser induced plasma filamentation in air could serve as tabletop sources of broadband terahertz (THz) pulses. Ubiquitous air in the earth facilitates its widespread utilities, particularly, in wireless communication and remote sensing, exp
Externí odkaz:
http://arxiv.org/abs/2404.11846
Publikováno v:
矿业科学学报, Vol 5, Iss 4, Pp 374-381 (2020)
When the coal-seams are multi-layered, the stress and permeability of the caving zone are disturbed again during the following coal seam mining. Repeated unloading and compaction cause caved coal and rock to break further in the caving zone, which in
Externí odkaz:
https://doaj.org/article/8600beae91b9433aa333107366e865ab