Zobrazeno 1 - 10
of 88
pro vyhledávání: '"Jianhang Chen"'
Publikováno v:
Meitan xuebao, Vol 49, Iss 5, Pp 2283-2297 (2024)
In order to study the effect of basic roof period pressure on the dynamic characteristics of impact pillar, one-dimensional dynamic and static combined loading SHPB experimental device is used to carry out dynamic impact experiment on the impact sand
Externí odkaz:
https://doaj.org/article/2512f3856a0a4f6c9715fa7d47424bfe
Autor:
Jianhang Chen, Junming Ma, Xiaofan Zeng, Banquan Zeng, Krzysztof Skrzypkowski, Krzysztof Zagórski, Anna Zagórska, Saisai Wu
Publikováno v:
Materials, Vol 17, Iss 16, p 3987 (2024)
When modelling the anchorage performance of rebars with the tri-linear law, the calculation process of the load–deformation relation is complicated. The reason is that when the rebar–grout interface entered the elastic–softening–debonding sta
Externí odkaz:
https://doaj.org/article/2b23dd42fc46429b892bd107d1cb9343
Autor:
Saisai Wu, Wanyi Zhang, Jianhang Chen, Krzysztof Skrzypkowski, Krzysztof Zagórski, Anna Zagórska
Publikováno v:
Materials, Vol 17, Iss 14, p 3563 (2024)
Due to the intricate and volatile nature of the service environment surrounding prestressing anchoring materials, stress corrosion poses a significant challenge to the sustained stability of underground reinforcement systems. Consequently, it is impe
Externí odkaz:
https://doaj.org/article/74caf096c3f640de8c105b033ac9d394
Publikováno v:
International Journal of Concrete Structures and Materials, Vol 16, Iss 1, Pp 1-14 (2022)
Abstract A better understanding of the tensile performance and tensile failure mechanism of cement paste is significant in preventing rock reinforcement failure. Therefore, this paper aims to reveal the tensile performance and failure mechanism of a
Externí odkaz:
https://doaj.org/article/174bc40ccfaf47b8a258cf9b0c3cd8bd
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-16 (2022)
Abstract Characterizing the permeability evolution and methane release is of great significance for the safe mining of the high gas outburst seams, as well as coal and gas simultaneous extraction. It contributes to reduce methane emissions from coal
Externí odkaz:
https://doaj.org/article/cdfb25c4ed554e2ebaa58cc1e4beade3
Autor:
Jianhang Chen, Shiji Wang, Yiqiang Zhao, Lei Liu, Krzysztof Skrzypkowski, Krzysztof Zagórski, Anna Zagórska
Publikováno v:
Materials, Vol 16, Iss 15, p 5362 (2023)
The grout annulus (GA) has a significant effect on the tensile performance of rockbolts in mining engineering. However, little research has been conducted to use modified cable elements to study this effect quantitatively. This paper used the modifie
Externí odkaz:
https://doaj.org/article/3bdcec3b3a63478d821e07e80dfdd547
Publikováno v:
Frontiers in Earth Science, Vol 10 (2022)
Rock reinforcement is significant in maintaining the stability of excavated structures, such as tunnels and underground roadways. However, shear failure in the rock reinforcement system, especially the shear failure at the rock reinforcement bolt sur
Externí odkaz:
https://doaj.org/article/7c7bd758c5bb4ed1b32cc35862d58156
Publikováno v:
International Journal of Mining Science and Technology, Vol 30, Iss 1, Pp 105-109 (2020)
Fully grouted rock bolts have been used in mining industry for many years. Much research has been conducted to evaluate the load transfer behavior of fully grouted rock bolts with experimental programs. However, compared with that, less work has been
Externí odkaz:
https://doaj.org/article/175756e098604eddb6e5886542e7e6d9
Autor:
Marta Frias Castillo, Jacqueline Hodge, Matus Rybak, Paul van der Werf, Ian Smail, Jack E. Birkin, Chian-Chou Chen, Scott C. Chapman, Ryley Hill, Claudia del P.Lagos, Cheng-Lin Liao, Elisabete da Cunha, Gabriela Calistro Rivera, Jianhang Chen, E. F. Jiménez-Andrade, Eric J. Murphy, Douglas Scott, A. M. Swinbank, Fabian Walter, R. J. Ivison, Helmut Dannerbauer
Publikováno v:
The Astrophysical Journal, Vol 945, Iss 2, p 128 (2023)
We present the initial results of an ongoing survey with the Karl G. Jansky Very Large Array targeting the CO( J = 1–0) transition in a sample of 30 submillimeter-selected, dusty star-forming galaxies (SFGs) at z = 2–5 with existing mid- J CO det
Externí odkaz:
https://doaj.org/article/c3f4506f1f144add9c3893786b82814a
Publikováno v:
International Journal of Mining Science and Technology, Vol 29, Iss 6, Pp 889-897 (2019)
To study the occurrence mechanism of rock burst during mining the irregular working face, the study took irregular panel 7447 near fault tectonic as an engineering background. The spatial fracture characteristic of overlying strata was analyzed by Wi
Externí odkaz:
https://doaj.org/article/44d11b67790c41a9aa1552469022c452