Results 11 to 20 of about 26,903 (228)
Energy Evolution Law during Failure Process of Coal–Rock Combination and Roadway Surrounding Rock
Minerals, 2022 The deformation and failure of a coal–rock system in a deep environment is affected by its own mechanical properties, natural endowments, and geological structures; it is very important to study the energy evolution law of coal–rock systems. For this purpose, a Particle Flow Code in 2 Dimensions (PFC2D) simulation was conducted to assess the coal–rock ...
Dongxiao Zhang +5 more
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Geomatics, Natural Hazards & RiskTo prevent severe damage to the surrounding rock of the roadway under the high ground pressure within deep mining, the stress evolution of the surrounding rock was studied, and the surrounding rock control technology in the II1057 roadway of ...
Huaibin Li +4 more
doaj +3 more sources
International Journal of Mining Science and Technology, 2015 Abstract The soft rock’s heterogeneity and nonlinear mechanical behavior cause extremely difficult maintenance on the soft rock roadway. Aiming at the asymmetric deformation and destruction phenomenon appearing after excavating and supporting the 7101 air return way in Meihe mine, this paper comprehensively adopted a variety of methods to analyze the
Yang Yu +4 more
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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 +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 +4 more
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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 +5 more
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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 +4 more
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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 +4 more
core +2 more sources
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 +5 more
doaj +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 +3 more
core +3 more sources