Infrared Physics & Technology, Journal Year: 2024, Volume and Issue: unknown, P. 105648 - 105648
Published: Nov. 1, 2024
Language: Английский
Geomechanics and Geophysics for Geo-Energy and Geo-Resources, Journal Year: 2025, Volume and Issue: 11(1)
Published: Jan. 23, 2025
Language: Английский
Citations
2
Processes, Journal Year: 2025, Volume and Issue: 13(2), P. 499 - 499
Published: Feb. 11, 2025
The drill cuttings method is a commonly used for evaluating coal burst risk in mines. In engineering applications, due to the development of fractures seams, borehole collapse can easily occur during drilling, which leads greater quantity cuttings. This turn affects accuracy evaluation results risk. Through laboratory tests on from intact and fractured specimens, impact stress diameter occurrence was studied. When there no collapse, increases proportion has power function relationship with an exponential stress. occurs, failure characteristics specimens mainly present two forms. One cylindrical area, other conical area. Compared normal are notable changes particle size after characteristic value D50 significantly borehole, be determine whether occurs.
Language: Английский
Citations
1
Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)
Published: March 14, 2025
This study presents a comprehensive numerical analysis of dynamic rupture and fault-induced seismic risks in deep roadway excavation environments, focusing on near-fault conditions. A quantitative assessment was conducted for faults within 5 m the roadway, critical range evaluating heightened risks. Our results demonstrate that this proximity, fault slip moment increase significantly, with peak reaching 17.1 mm exceeding 3.9 × 1010 Nm. One key findings is amplification effect wave reflections along exposed surfaces, particularly areas near roof sidewall. The particle velocity (PPV) reached 0.40 m/s, while right sidewall recorded 0.49 highlighting elevated impacts these regions. also validated linear weakening model, confirming its effectiveness capturing transition from static to friction during providing theoretical grounding observed behavior. research contributes novel insights into process, ultra-close conditions, emphasizes need account frictional properties, reflection hazard assessments. offer foundation improving seismic-resistant design operations, faulted geological settings.
Language: Английский
Citations
1
Applied Sciences, Journal Year: 2025, Volume and Issue: 15(2), P. 755 - 755
Published: Jan. 14, 2025
The emergence of rock mechanics was driven by the need to address stability issues in engineering and examine conditions leading failure [...]
Language: Английский
Citations
0
Physics and Chemistry of the Earth Parts A/B/C, Journal Year: 2025, Volume and Issue: unknown, P. 103905 - 103905
Published: March 1, 2025
Language: Английский
Citations
0
Earth energy science., Journal Year: 2025, Volume and Issue: unknown
Published: March 1, 2025
Language: Английский
Citations
0
Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)
Published: April 5, 2025
In view of the phenomenon ultra-large drilling cuttings quantity in rockburst coal seams, concept has been proposed. A plastic damage strain sof-tening mechanical analysis model for seam hole established. Us-ing disturbance-induced instability theory, we investigate mechanism and derive an analytical solution its triggering conditions. The main influencing factors relationship with have analyzed. research results show that: phenome-non occurs under various conditions, such as different mine depth strength bodies, is result disturbance structure, which from gravity-induced collapse gas or stress-induced blowout. initiation conditions are mainly controlled by bursting energy index KE compressive σc. larger , smaller critical stress initia-tion phenomenon, making it more likely to occur, conversely, σc, required less oc-cur. bulk density only affects value does not change phenomenon. ul-tra-large sudden locally destructive, occur brittle soft but can be severe hard coal. share same controlling patterns occurrence rockburst. When quan-tity appears a borehole, surrounding rock roadway reached level necessary occur. This indicates that serve dynamic assess burst risk roadway.
Language: Английский
Citations
0
International Journal for Numerical and Analytical Methods in Geomechanics, Journal Year: 2025, Volume and Issue: unknown
Published: May 23, 2025
ABSTRACT Translatory bumps are becoming a major challenge in the excavation of coal seams. This study presents closed‐form solutions stress and plastic zone width for translatory seam within framework Lippmann theory. The strength taken as an elastic−perfectly material friction force at coal−rock interface evaluated by generalized effective with consideration gas pressure. Unified Strength Theory is adopted to address contributions intermediate principal on improvements seam. orderly serialized solution obtained this formatted into three sets accordance linear, exponential, sinusoidal profiles pressure, its validity demonstrated comparing it both published theoretical numerical simulations. In addition, discussions conducted between results from pressure varying influencing extents stress. Parametric studies highlight that effect significant, especially exponential profile weaker stress; bump tendency high great depth thin thickness; internal angle has more pronounced impact than cohesion
Language: Английский
Citations
0
Rock Mechanics and Rock Engineering, Journal Year: 2024, Volume and Issue: 57(12), P. 10731 - 10745
Published: Aug. 19, 2024
Language: Английский
Citations
1
Infrared Physics & Technology, Journal Year: 2024, Volume and Issue: unknown, P. 105648 - 105648
Published: Nov. 1, 2024
Language: Английский
Citations
0