Study on the time delay failure characteristics of sandstone unloading under dynamic disturbance DOI Creative Commons
Huafeng Deng,

Yening Huang,

Yao Xiao

et al.

Deleted Journal, Journal Year: 2024, Volume and Issue: unknown, P. 100114 - 100114

Published: Oct. 1, 2024

Language: Английский

Study of the velocity effect on the energy dissipation structure of overlying rock at a fully mechanized mining face DOI
Pengxiang Zhao,

Zechen Chang,

Shugang Li

et al.

Energy, Journal Year: 2025, Volume and Issue: unknown, P. 135315 - 135315

Published: Feb. 1, 2025

Language: Английский

Citations

1
Role of hole depth on mechanical behavior and acoustic emission characteristics of pre-drilled sandstone DOI Creative Commons

Jiahan Liu,

Ruide Lei

Frontiers in Earth Science, Journal Year: 2025, Volume and Issue: 13

Published: Jan. 23, 2025

To examine the influence of hole depth on mechanical properties rock, a series uniaxial compression tests were performed six groups pre-drilled sandstone samples, each with varying depths. Also, multiple physical fields coupled acoustic emission (AE) and digital image correlation (DIC) systems synchronously employed to monitor fracturing process. The study focused characterizing cracking fracturing, energy evolution, fracture patterns in sandstones different findings show that peak strength decreases linearly increase depth. mode transits from simple unilateral spalling complex characterized by fractures spalling. AE analysis shows deeper borehole, lower signal frequency, indicating fewer but more significant events. With depth, elastic sample 29.81 kJ/m 3 22.65 , dissipated increases 4.48 6.25 . Moreover, displays distinct multifractal spectrum features under stress levels. width (Δ α ) varies 0.419 0.227, suggesting small-scale events predominantly govern failure mechanism. DIC observation major principal strain concentration mainly occurs around hole. monitoring points cumulative at P2 P6 is significantly higher compared other regions. Furthermore, it observed release pathways originating newly formed cracks dislocation slips become diversified,

Language: Английский

Citations

0
Fatigue behaviors of pre-flawed orthoclase granite under monotonic and multi-level cyclic loadings DOI
Yue Li, Sheng‐Qi Yang,

Duosi Zheng

et al.

Theoretical and Applied Fracture Mechanics, Journal Year: 2025, Volume and Issue: unknown, P. 104858 - 104858

Published: Jan. 1, 2025

Language: Английский

Citations

0
Macro-mesoscopic study of the deformation and failure mechanism of through-boundary type locked rock masses DOI

Yanglong Diao,

Wenjie Wang,

Feng Luo

et al.

Theoretical and Applied Fracture Mechanics, Journal Year: 2025, Volume and Issue: unknown, P. 104891 - 104891

Published: Feb. 1, 2025

Language: Английский

Citations

0
Mechanical behavior and damage constitutive model of fractured granite after high-temperature treatment based on 3D digital image correlation DOI
Lan Zeng, Jialong Zhang, Shi Liu

et al.

Theoretical and Applied Fracture Mechanics, Journal Year: 2025, Volume and Issue: unknown, P. 104919 - 104919

Published: March 1, 2025

Language: Английский

Citations

0
Effects of Stress States and Joint Configurations on Dynamic Mechanical Properties of Rock Masses DOI Open Access
Tingting Liu,

Zi Wang,

Xuyi Wang

et al.

Materials, Journal Year: 2025, Volume and Issue: 18(8), P. 1699 - 1699

Published: April 9, 2025

In complex geological environments, the discontinuous dynamic response behavior of jointed rock masses under coupled effects in situ stress and transient disturbances significantly exacerbates risk surrounding instability. This study establishes three-dimensional numerical models various rocks uniaxial-biaxial-triaxial split Hopkinson pressure bar (SHPB) experimental systems through coupling finite difference method (FDM) discrete element (DEM). The adhere to one-dimensional wave propagation assumption satisfy equilibrium requirements, demonstrating mechanical responses consistent with physical experiments. results reveal that synergistic-competitive between joint configuration initial pre-compression jointly dominate rocks. Multiaxial promotes development secondary force chain networks, enhances impact resistance multi-path transfer mechanisms, improves strain energy storage density during peak stages, drives failure modes evolve from macroscopic through-going fractures localized crushing zones. spatial heterogeneity configurations induces anisotropic characteristics principal fabric. Single maintain structural integrity due restricted weak plane propagation, while cross/parallel joints exhibit geometrically induced synergistic effects, forming differentiated crack paths intensify frictional kinetic dissipation. Through cross-scale model comparisons, evolution fabric, particle displacement distribution, microcrack dissipation mechanisms were analyzed, unveiling regulatory state on response. provides a theoretical basis for impact-resistant structure optimization instability early warning deep engineering projects involving rock.

Language: Английский

Citations

0
Investigation of mechanical and ultrasonic properties of sandstone with different flaws characteristics under triaxial stress DOI
Yang Li, Binwei Xia, Yugang Gao

et al.

Theoretical and Applied Fracture Mechanics, Journal Year: 2024, Volume and Issue: unknown, P. 104689 - 104689

Published: Sept. 1, 2024

Language: Английский

Citations

1
Numerical characterization on fracture evolution behavior of pre-flawed sandstone under monotonic and multilevel cyclic loading DOI
Kesheng Li, Sheng‐Qi Yang, Yu Song

et al.

Theoretical and Applied Fracture Mechanics, Journal Year: 2024, Volume and Issue: 133, P. 104634 - 104634

Published: Aug. 28, 2024

Language: Английский

Citations

0
Study on the time delay failure characteristics of sandstone unloading under dynamic disturbance DOI Creative Commons
Huafeng Deng,

Yening Huang,

Yao Xiao

et al.

Deleted Journal, Journal Year: 2024, Volume and Issue: unknown, P. 100114 - 100114

Published: Oct. 1, 2024

Language: Английский

Citations

0