Results 31 to 40 of about 64,796 (273)

Study on Failure Mechanism of Roadway Surrounding Rock and Hierarchical Continuous Support Technology in Unidirectional Fault Area

Processes, 2023
A fault is a common geological structure in coal mining. Large deformation or even instability and collapse often occur in roadways in fault areas, which restricts the safe and efficient production of mines.
Zhengzheng Xie, Fengchun Mu, Feng Guo, Nong Zhang, Yongle Li, Ruiji Chen, Qinghua Chen   +6 more
semanticscholar   +1 more source

Analysis on Spatial Disturbance Influence of Surrounding Rock Stress in the Staggered Roadways and Its Control Countermeasures

Shock and Vibration, 2022
Combined with specific engineering examples, the spatial disturbance influence characteristics and laws of the surrounding rock stress in the staggered roadways are analyzed by numerical simulation.
Qingwei Bu, Benqing Yuan, Meng Ye, Nuo Xu   +3 more
doaj   +1 more source

Study on roadway layout and surrounding rock control of isolated island panel

Scientific Reports, 2023
AbstractDuring the re-mining of historical residual coal resources, the stress environment is complex, the surrounding rock conditions are bad, the mining roadway is significantly affected by ground pressure, the layout is difficult, and the safety is poor.
Lei Shi, Jiao Zhang, Weiyong Lu, Dong Lv, Xiang Sun   +4 more
openaire   +3 more sources

Research on the stability control of surrounding rock in the roadway with dynamic pressure and high slope

Gong-kuang zidonghua, 2021
The roadway with dynamic pressure and high slope refers to the roadway which is seriously affected by dynamic pressure and has a high slope. This type of roadway not only experiences disturbances in the excavation process, but also has to experience the ...
SHEN Binxue, YUAN Chaofeng, GU Wenzhe, LIU Zhicheng, SONG Tianqi, PAN Hao   +5 more
doaj   +1 more source

Dynamic Response Analysis of Roadway Surrounding Rock Induced by Dynamic Load under the Action of Hard and Thick Rock Stratum

Geofluids, 2023
In the process of coal seam mining, there are often hard thick key layers in the overlying strata. Due to the high strength and good integrity of the hard thick key layer, after the hard thick key layer is broken, the overlying strata will collapse and ...
Kaihua Liang, Quansen Wu, Quanlin Wu, Xiang-yu Shi, Hong Zhao, Fuwu Ma, Zhaomin Zhang   +6 more
semanticscholar   +1 more source

Generalization of trends in the influence of geomechanics factors on the choice of operation modes for the fastening system in the preparatory mine workings [PDF]

, 2000
Purpose. Substantiation of the mechanism of loading the preparatory mine working support to optimize its deformation-strength characteristics based on the calculation of the stress-strain state of the “massif – support” system.
Chervatiuk, V, Husiev, O, Kovalevska, I, Snihur, V, Zhuravkov, M   +4 more
core   +2 more sources

Stabilization of Rock Roadway under Obliquely Straddle Working Face

Energies, 2021
A floor rock roadway under an oblique straddle working face is a typical dynamic pressure roadway. Under the complex disturbance of excavation engineering works, the roadway often undergoes stress concentration and severe deformation and damage. To solve
Peng Wang, Nong Zhang, Jiaguang Kan, Bin Wang, Xingliang Xu   +4 more
doaj   +1 more source

Experimental Study of the Plastic Zone and Stress Asymmetric Distribution in Roadway Layered Surrounding Rocks

Applied Sciences, 2022
A three-axis experimental simulation model was established for a roadway with layered surrounding rock by a 20 MPa true triaxial analog simulation equipment, and the corresponding layered surrounding rock numerical simulation model was established by ...
Jiaren Chen, Hai Wu, Xuan Zhang, Xu Gao, Tao Ling, Zizheng Zhang   +5 more
doaj   +1 more source

Spatial Distribution Characteristics of Plastic Failure and Grouting Diffusion within Deep Roadway Surrounding Rock under Three-Dimensional Unequal Ground Stress and Its Application

Minerals, 2022
To explore the bolt-grouting method of the deep roadway under three-dimensional unequal ground stress, a unidirectional coupling model of surrounding rock plastic failure and grouting diffusion considering the influence of excavation disturbance stress ...
Yaoguang Huang, Wanxia Yang, Yangyang Li, Weibin Guo   +3 more
semanticscholar   +1 more source

Distant interaction of rock mass clusters around underground opening [PDF]

, 2017
Purpose. To experimentally prove the fact of distant interaction between rock clusters during the irreversible displacements of rock mass. Disintegration of the rock mass does not necessarily imply loss in underground working stability.
Diedich, I, Griniov, V, Nazymko, V, Zakharova, L   +3 more
core   +3 more sources