Zobrazeno 1 - 10
of 279
pro vyhledávání: '"bolt support"'
Autor:
Zhen’an LI, Zhuang LI
Publikováno v:
Meikuang Anquan, Vol 55, Iss 10, Pp 158-165 (2024)
In order to understand the mechanical response and failure characteristics of anchored fractured coal body under cyclic dynamic load, the dynamic load impact test of anchored fractured coal under cyclic impact dynamic load was carried out by using th
Externí odkaz:
https://doaj.org/article/c1bfb4da16c749fb8f6f2a5c2efef350
Publikováno v:
Meikuang Anquan, Vol 55, Iss 8, Pp 124-132 (2024)
Aiming at the difficulties of large plastic failure range of surrounding rock and insufficient strength of bolt support system of the “strong roof and weak side” semi coal-rock roadway, taking 8# coal seam mining roadway of a certain mine as the
Externí odkaz:
https://doaj.org/article/f23daad5b7c8493f802a79769aaa5275
Autor:
Sun, Bing-jun a, Mei, Yu-chun a, Li, Wei-teng a, b, ⁎, Li, Ting-chun a, Li, Hong-ze a, Yang, Guang-hui a
Publikováno v:
In Structures December 2024 70
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-24 (2024)
Abstract Undertakings in underground mining are often complicated, particularly in situations where geotechnical conditions are not favorable. This study investigates the collapse of tunnels at the Lega-Dembi gold mine in Southern Ethiopia, an area c
Externí odkaz:
https://doaj.org/article/19223e139fa5494ebbf3307450336021
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:
Meitan kexue jishu, Vol 52, Iss 2, Pp 49-62 (2024)
The traditional anchor cable has low elongation, poor impact resistance, and is prone to brittle fracture failure under strong impact load, leading to roof fall, rock burst accidents and other problems in the roadway. Based on this, the anchor cable
Externí odkaz:
https://doaj.org/article/2956de0a9ef04749a44459504cb35631
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 9, Pp 105-111 (2023)
In order to solve the problem that traditional bolt cannot effectively adapt to the complex stress environment of deep rock roadway, taking a roadway as the engineering background and aiming at a new type of tension distributed bolt, the roadway supp
Externí odkaz:
https://doaj.org/article/2010491fc2dc46939e8d48ad98e3474f
Publikováno v:
Meikuang Anquan, Vol 54, Iss 6, Pp 131-143 (2023)
With the increasing depth of roadway and the complexity of mine environment in China, the challenge of roadway bolt support will be more serious. Based on the investigation of relevant literature, the related theories of roadway bolt support were sys
Externí odkaz:
https://doaj.org/article/f5538ffb779c47d7a7d26c1b83fc704a
Publikováno v:
Meikuang Anquan, Vol 54, Iss 5, Pp 232-246 (2023)
Aiming at the problem of how to give full play to the reverse extrusion ability of bolt to the surrounding rock to make the interface stress balance quickly and enhance the active support effect, we propose the anchorage method of radial pressurizati
Externí odkaz:
https://doaj.org/article/2323453c60e84025ac1be1b65f3595d3