Zobrazeno 1 - 10
of 341
pro vyhledávání: '"roadway support"'
Publikováno v:
Meitan kexue jishu, Vol 52, Iss 9, Pp 76-87 (2024)
In response to the challenging problem of deformation and failure of surrounding rock and support structures in roadways under rock burst, a comprehensive research approach involving numerical calculations, field measurements, and laboratory experime
Externí odkaz:
https://doaj.org/article/b1fc1c64f4fe42f2b118c1f0409247c2
Publikováno v:
Meikuang Anquan, Vol 55, Iss 9, Pp 139-148 (2024)
To study the support design of deep thick coal seam roadway, we propose three support design schemes from the perspective of safety and support cost based on the 432 belt transportation roadway in Tangyang Coal Mine. Theoretical analysis, numerical s
Externí odkaz:
https://doaj.org/article/5ef287e280084627aaafdf84116c96b2
Autor:
Shaokang WU, Junwen ZHANG, Youlin XU, Zhixiang SONG, Yang ZHANG, Wenbing FAN, Xukai DONG, Jitao ZHANG, Zhisong CHEN
Publikováno v:
Meitan kexue jishu, Vol 52, Iss 3, Pp 24-37 (2024)
Aiming at addressing the challenges encountered in roadway support during coal seam group mining, this project focuses on the 212 main return-air cross-cut in Tucheng Mine, Guizhou Province. Through field investigation, numerical simulation, analog s
Externí odkaz:
https://doaj.org/article/6e712f6f676c470c807058ab2b405cc6
Publikováno v:
Meitan kexue jishu, Vol 52, Iss 3, Pp 53-62 (2024)
In response to the problem of lack of shrinkable pressure-allowing performance of steel pipe concrete arch in the current roadway support, an anti-impacting and energy-absorbing steel pipe concrete arch structure is designed from the perspective of e
Externí odkaz:
https://doaj.org/article/bd53f02857ca4f59b4ac0f1352e39766
Autor:
CHEN Wanhui, GUO Rui, HAN Wei, SONG Yongming, LIANG Yanxiang, LIU Yao, WANG Jiaming, XU Na, MENG Bo
Publikováno v:
Gong-kuang zidonghua, Vol 50, Iss 8, Pp 76-83, 90 (2024)
Currently, the design of coal mine roadway support schemes is still mainly based on manual design, engineering analogy, and FLAC model simulation, which has problems such as strong subjectivity, low universality, and insufficient utilization of coal
Externí odkaz:
https://doaj.org/article/862aec30336345ce8aebee4c9044ee87
Publikováno v:
Meikuang Anquan, Vol 55, Iss 2, Pp 141-146 (2024)
In order to study the deformation and failure mechanism of ribbed steel rebar bolts anchorage structure, the axisymmetric numerical model of anchorage structure was established by ABAQUS software. Based on the cohesion model, the numerical test was c
Externí odkaz:
https://doaj.org/article/b642b4001cbf40c8ab691cd5cd44b75d
Publikováno v:
Meikuang Anquan, Vol 54, Iss 12, Pp 123-133 (2023)
In order to solve the severe damage and difficult support of lower group coal roadways under the influence of mining in upper group coal seams near Malan Mine, a field survey, numerical simulation, and theoretical analysis were conducted to analyze t
Externí odkaz:
https://doaj.org/article/3c26f9a7361a45a89d43f57aad21b564
Publikováno v:
Meikuang Anquan, Vol 54, Iss 10, Pp 128-137 (2023)
In order to solve the problems such as overload bending, deformation and tearing caused by the rock bolt bracket which is difficult to adapt to the impact of surrounding rock, a new concept of filling the solid part of the dome with tensile microlatt
Externí odkaz:
https://doaj.org/article/7bf12317aa084b7f98d90164c5c6c772
Publikováno v:
Meikuang Anquan, Vol 54, Iss 10, Pp 146-153 (2023)
Taking No.12302 roadway of Wangjialing Mine as the research background, the advance support technology was researched by means of field investigation, theoretical analysis and engineering practice. The main problems that should be solved of the advan
Externí odkaz:
https://doaj.org/article/9912ecd275bf4721aae9fe07295670f2
Publikováno v:
Buildings, Vol 14, Iss 8, p 2373 (2024)
An improved method for rockbolt fracture is proposed in this paper to determine the exact fracture position of rockbolts simulated using cable structural elements (cableSELs) in FLAC3D. This method employs the total elongation of the free segment of
Externí odkaz:
https://doaj.org/article/f1e5a98807514a1c854d94866cbe5fd2