Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Zijun Han"'
Publikováno v:
Meitan kexue jishu, Vol 52, Iss 5, Pp 1-10 (2024)
The formation of residual coal pillars and void areas after mining of the upper seam close to the coal seam will affect the layout of the lower seam roadway. In this paper, taking 231101 working face of Xinliu Mine as engineering background, the comp
Externí odkaz:
https://doaj.org/article/6c66acc2071a408889314d49048d9b10
Publikováno v:
Meitan xuebao, Vol 49, Iss 4, Pp 1771-1785 (2024)
Aim at the mechanism and risk assessment of rockburst of mine roadways, the energy release laws of roadway surrounding rock in different regional stress fields are analyzed. Combined with the impact of dynamic load events, the mechanical relationship
Externí odkaz:
https://doaj.org/article/daded912927e4a0e92347bcc7507053c
Autor:
Hongtao Liu, Zhou Han, Zijun Han, Zihan Chen, Qinyu Liu, Hongkai Zhang, Rongguang Zhang, Linfeng Guo
Publikováno v:
International Journal of Mining Science and Technology, Vol 34, Iss 3, Pp 351-369 (2024)
Based on existing triaxial compression experimental data, a new empirical failure criterion with wide applicability was proposed considering hydrostatic pressure, second stress invariance, and maximum shear stress. Four fitting evaluation indicators
Externí odkaz:
https://doaj.org/article/3828f3dd58f2424196cfaa239df61385
Publikováno v:
Meitan kexue jishu, Vol 52, Iss 3, Pp 1-12 (2024)
Fully mechanized top-coal caving mining with large mining height is easy to form strong strata behavior, and the fracture evolution law of overlying strata is very important for safe production of working face. Taking the 160206 working face of Yangc
Externí odkaz:
https://doaj.org/article/5dbb89d277b4465cb08620883d63dedf
Autor:
Hongtao Liu, Guangdong Zhou, Zijun Han, Yue Ji, Yuqi Zhang, Chenglu Zhang, Huogen Luo, Yongxiang Lu, Chenxiao Cao, Zhenzhuo Xu, Lei Guo, Chunyi Chen
Publikováno v:
Case Studies in Construction Materials, Vol 21, Iss , Pp e03584- (2024)
Anchor cables in water-rich roadways frequently experience severe corrosion and resultant fractures due to the combined effects of mine water and high stress. However, the precise factors influencing corrosion on these cables remain ambiguous, presen
Externí odkaz:
https://doaj.org/article/eb5aa62f66f14755addb24f684918ce1
Autor:
Hongtao LIU, Zijun HAN, Xiaofei GUO, Guangdong ZHOU, Shengjie WEI, Zhou HAN, Xiaogang CHEN, Wencong CHENG
Publikováno v:
Meitan kexue jishu, Vol 51, Iss 10, Pp 12-23 (2023)
In order to study the boundary of plastic zone of surrounding rock of a roadway considering axial stress, based on Mohr-Coulomb criterion, the implicit equation of plastic zone boundary of surrounding rock of circular roadway considering axial stress
Externí odkaz:
https://doaj.org/article/4535e40961dd4e61b1d67cd839b68c9c
Publikováno v:
Meitan xuebao, Vol 48, Iss 10, Pp 3646-3658 (2023)
Aiming at the problems of serious asymmetric damage phenomenon of roadway on the side of stope and unclear rotation law of principal stress around roadway, the relationship between the rotation of principal stress around roadway and the asymmetric da
Externí odkaz:
https://doaj.org/article/ae8871dda179427c9f808394a9574df1
Publikováno v:
Geofluids, Vol 2022 (2022)
The migration law of overlying strata on working face is of great significance for safe mining of working face. In this paper, theoretical calculation, numerical simulation, and similar simulation are used to study the distribution characteristics, m
Externí odkaz:
https://doaj.org/article/f6d7cbf3ff9846efa08b9511f1e55249
Autor:
Hongtao Liu, Yang Chen, Zijun Han, Qinyu Liu, Zilong Luo, Wencong Cheng, Hongkai Zhang, Shizhu Qiu, Haozhu Wang
Publikováno v:
Sensors, Vol 22, Iss 22, p 8675 (2022)
To control the problem of coal wall spalling in large mining height working faces subject to mining, considering the Duanwang Mine 150505 fully mechanized working face, the mechanism of coal wall spalling in working faces was investigated by theoreti
Externí odkaz:
https://doaj.org/article/c6846ec6921a4f97afba136d7c4d26a0
Publikováno v:
IEEE Access, Vol 7, Pp 31688-31701 (2019)
So far, the handoff management involved in the wireless local area network (WLAN) has mainly fallen into the handoff mechanism and the decision algorithm. The traditional handoff mechanism generates noticeable delays during the handoff process, resul
Externí odkaz:
https://doaj.org/article/c1a50a82b83941c9aac7b73ac74b15a9